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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 07:58:59,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 07:58:59,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 07:58:59,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 07:58:59,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 07:58:59,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 07:58:59,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 07:58:59,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 07:58:59,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 07:58:59,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 07:58:59,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 07:58:59,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 07:58:59,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 07:58:59,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 07:58:59,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 07:58:59,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 07:58:59,467 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 07:58:59,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 07:58:59,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 07:58:59,468 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 07:58:59,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 07:58:59,469 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 07:58:59,469 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 07:58:59,472 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 07:58:59,472 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 07:58:59,473 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 07:58:59,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 07:58:59,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 07:58:59,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 07:58:59,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 07:58:59,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 07:58:59,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 07:58:59,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 07:58:59,475 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 07:58:59,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 07:58:59,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 07:58:59,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 07:58:59,475 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 07:58:59,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 07:58:59,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 07:58:59,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 07:58:59,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 07:58:59,476 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 07:58:59,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 07:58:59,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 07:58:59,478 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 07:58:59,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 07:58:59,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 07:58:59,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 07:58:59,540 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 07:58:59,540 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 07:58:59,541 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-10 07:58:59,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96482f92a/4451f05de5e74d59953c42a47eb05248/FLAG9d9a46655 [2019-09-10 07:59:00,041 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 07:59:00,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-10 07:59:00,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96482f92a/4451f05de5e74d59953c42a47eb05248/FLAG9d9a46655 [2019-09-10 07:59:00,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96482f92a/4451f05de5e74d59953c42a47eb05248 [2019-09-10 07:59:00,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 07:59:00,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 07:59:00,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 07:59:00,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 07:59:00,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 07:59:00,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:00,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ffd4eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00, skipping insertion in model container [2019-09-10 07:59:00,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:00,456 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 07:59:00,501 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 07:59:00,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:59:00,895 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 07:59:00,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:59:00,983 INFO L192 MainTranslator]: Completed translation [2019-09-10 07:59:00,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00 WrapperNode [2019-09-10 07:59:00,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 07:59:00,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 07:59:00,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 07:59:00,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 07:59:00,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:00,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:01,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:01,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:01,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:01,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:01,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (1/1) ... [2019-09-10 07:59:01,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 07:59:01,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 07:59:01,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 07:59:01,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 07:59:01,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (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 [2019-09-10 07:59:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 07:59:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 07:59:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 07:59:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 07:59:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 07:59:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 07:59:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-10 07:59:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 07:59:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 07:59:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 07:59:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 07:59:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 07:59:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 07:59:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 07:59:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-10 07:59:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-10 07:59:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 07:59:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 07:59:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 07:59:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 07:59:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 07:59:01,737 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 07:59:01,738 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 07:59:01,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:59:01 BoogieIcfgContainer [2019-09-10 07:59:01,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 07:59:01,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 07:59:01,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 07:59:01,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 07:59:01,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 07:59:00" (1/3) ... [2019-09-10 07:59:01,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194e4ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:59:01, skipping insertion in model container [2019-09-10 07:59:01,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:59:00" (2/3) ... [2019-09-10 07:59:01,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194e4ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:59:01, skipping insertion in model container [2019-09-10 07:59:01,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:59:01" (3/3) ... [2019-09-10 07:59:01,752 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-10 07:59:01,762 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 07:59:01,782 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 07:59:01,800 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 07:59:01,830 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 07:59:01,830 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 07:59:01,831 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 07:59:01,831 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 07:59:01,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 07:59:01,831 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 07:59:01,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 07:59:01,832 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 07:59:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2019-09-10 07:59:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 07:59:01,870 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:01,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:01,872 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:01,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1817942927, now seen corresponding path program 1 times [2019-09-10 07:59:01,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:01,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:01,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:01,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:01,931 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:02,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:02,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:59:02,347 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:02,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:59:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:59:02,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:02,370 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2019-09-10 07:59:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:02,455 INFO L93 Difference]: Finished difference Result 162 states and 258 transitions. [2019-09-10 07:59:02,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:59:02,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-09-10 07:59:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:02,468 INFO L225 Difference]: With dead ends: 162 [2019-09-10 07:59:02,469 INFO L226 Difference]: Without dead ends: 154 [2019-09-10 07:59:02,470 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 [2019-09-10 07:59:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-10 07:59:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2019-09-10 07:59:02,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-09-10 07:59:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 219 transitions. [2019-09-10 07:59:02,527 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 219 transitions. Word has length 64 [2019-09-10 07:59:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:02,528 INFO L475 AbstractCegarLoop]: Abstraction has 152 states and 219 transitions. [2019-09-10 07:59:02,528 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:59:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 219 transitions. [2019-09-10 07:59:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 07:59:02,531 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:02,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:02,532 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:02,532 INFO L82 PathProgramCache]: Analyzing trace with hash 344530776, now seen corresponding path program 1 times [2019-09-10 07:59:02,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:02,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:02,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:02,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:02,535 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:02,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:02,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:59:02,739 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:02,741 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:59:02,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:59:02,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:02,743 INFO L87 Difference]: Start difference. First operand 152 states and 219 transitions. Second operand 3 states. [2019-09-10 07:59:02,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:02,788 INFO L93 Difference]: Finished difference Result 250 states and 372 transitions. [2019-09-10 07:59:02,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:59:02,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-10 07:59:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:02,796 INFO L225 Difference]: With dead ends: 250 [2019-09-10 07:59:02,796 INFO L226 Difference]: Without dead ends: 250 [2019-09-10 07:59:02,799 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 [2019-09-10 07:59:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-09-10 07:59:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2019-09-10 07:59:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2019-09-10 07:59:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 371 transitions. [2019-09-10 07:59:02,842 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 371 transitions. Word has length 65 [2019-09-10 07:59:02,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:02,843 INFO L475 AbstractCegarLoop]: Abstraction has 248 states and 371 transitions. [2019-09-10 07:59:02,843 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:59:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 371 transitions. [2019-09-10 07:59:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 07:59:02,847 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:02,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:02,848 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash -288418835, now seen corresponding path program 1 times [2019-09-10 07:59:02,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:02,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:02,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:02,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:02,852 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:02,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:02,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:59:02,940 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:02,940 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:59:02,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:59:02,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:02,944 INFO L87 Difference]: Start difference. First operand 248 states and 371 transitions. Second operand 3 states. [2019-09-10 07:59:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:02,986 INFO L93 Difference]: Finished difference Result 426 states and 648 transitions. [2019-09-10 07:59:02,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:59:02,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-09-10 07:59:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:02,992 INFO L225 Difference]: With dead ends: 426 [2019-09-10 07:59:02,992 INFO L226 Difference]: Without dead ends: 426 [2019-09-10 07:59:02,993 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 [2019-09-10 07:59:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-09-10 07:59:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 424. [2019-09-10 07:59:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-09-10 07:59:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 647 transitions. [2019-09-10 07:59:03,038 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 647 transitions. Word has length 66 [2019-09-10 07:59:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:03,039 INFO L475 AbstractCegarLoop]: Abstraction has 424 states and 647 transitions. [2019-09-10 07:59:03,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:59:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 647 transitions. [2019-09-10 07:59:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 07:59:03,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:03,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:03,043 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:03,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2091271574, now seen corresponding path program 1 times [2019-09-10 07:59:03,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:03,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:03,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,046 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:03,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:03,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:59:03,181 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:03,182 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:59:03,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:59:03,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:03,183 INFO L87 Difference]: Start difference. First operand 424 states and 647 transitions. Second operand 3 states. [2019-09-10 07:59:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:03,217 INFO L93 Difference]: Finished difference Result 746 states and 1144 transitions. [2019-09-10 07:59:03,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:59:03,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-10 07:59:03,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:03,226 INFO L225 Difference]: With dead ends: 746 [2019-09-10 07:59:03,227 INFO L226 Difference]: Without dead ends: 746 [2019-09-10 07:59:03,227 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 [2019-09-10 07:59:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2019-09-10 07:59:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2019-09-10 07:59:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-09-10 07:59:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1143 transitions. [2019-09-10 07:59:03,253 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1143 transitions. Word has length 67 [2019-09-10 07:59:03,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:03,254 INFO L475 AbstractCegarLoop]: Abstraction has 744 states and 1143 transitions. [2019-09-10 07:59:03,255 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:59:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1143 transitions. [2019-09-10 07:59:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:59:03,261 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:03,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:03,261 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:03,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:03,262 INFO L82 PathProgramCache]: Analyzing trace with hash -900755135, now seen corresponding path program 1 times [2019-09-10 07:59:03,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:03,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:03,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,263 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:03,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:03,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:59:03,388 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:03,388 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:59:03,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:59:03,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:59:03,389 INFO L87 Difference]: Start difference. First operand 744 states and 1143 transitions. Second operand 5 states. [2019-09-10 07:59:03,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:03,584 INFO L93 Difference]: Finished difference Result 1450 states and 2232 transitions. [2019-09-10 07:59:03,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:59:03,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 07:59:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:03,593 INFO L225 Difference]: With dead ends: 1450 [2019-09-10 07:59:03,593 INFO L226 Difference]: Without dead ends: 1450 [2019-09-10 07:59:03,594 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2019-09-10 07:59:03,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1448. [2019-09-10 07:59:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2019-09-10 07:59:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2231 transitions. [2019-09-10 07:59:03,630 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2231 transitions. Word has length 68 [2019-09-10 07:59:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:03,631 INFO L475 AbstractCegarLoop]: Abstraction has 1448 states and 2231 transitions. [2019-09-10 07:59:03,631 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:59:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2231 transitions. [2019-09-10 07:59:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:59:03,634 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:03,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:03,635 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash 426630054, now seen corresponding path program 1 times [2019-09-10 07:59:03,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:03,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:03,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,639 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:03,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:03,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:59:03,737 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:03,737 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:59:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:59:03,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:59:03,738 INFO L87 Difference]: Start difference. First operand 1448 states and 2231 transitions. Second operand 5 states. [2019-09-10 07:59:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:03,858 INFO L93 Difference]: Finished difference Result 1448 states and 2215 transitions. [2019-09-10 07:59:03,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:59:03,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 07:59:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:03,868 INFO L225 Difference]: With dead ends: 1448 [2019-09-10 07:59:03,868 INFO L226 Difference]: Without dead ends: 1448 [2019-09-10 07:59:03,869 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2019-09-10 07:59:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1448. [2019-09-10 07:59:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2019-09-10 07:59:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2215 transitions. [2019-09-10 07:59:03,911 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2215 transitions. Word has length 68 [2019-09-10 07:59:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:03,913 INFO L475 AbstractCegarLoop]: Abstraction has 1448 states and 2215 transitions. [2019-09-10 07:59:03,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:59:03,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2215 transitions. [2019-09-10 07:59:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:59:03,918 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:03,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:03,924 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1700498059, now seen corresponding path program 1 times [2019-09-10 07:59:03,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:03,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:03,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:03,928 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:04,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:04,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:59:04,013 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:04,014 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:59:04,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:59:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:59:04,015 INFO L87 Difference]: Start difference. First operand 1448 states and 2215 transitions. Second operand 5 states. [2019-09-10 07:59:04,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:04,122 INFO L93 Difference]: Finished difference Result 1448 states and 2199 transitions. [2019-09-10 07:59:04,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:59:04,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 07:59:04,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:04,131 INFO L225 Difference]: With dead ends: 1448 [2019-09-10 07:59:04,131 INFO L226 Difference]: Without dead ends: 1448 [2019-09-10 07:59:04,132 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2019-09-10 07:59:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1448. [2019-09-10 07:59:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2019-09-10 07:59:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2199 transitions. [2019-09-10 07:59:04,179 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2199 transitions. Word has length 68 [2019-09-10 07:59:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:04,179 INFO L475 AbstractCegarLoop]: Abstraction has 1448 states and 2199 transitions. [2019-09-10 07:59:04,180 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:59:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2199 transitions. [2019-09-10 07:59:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:59:04,180 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:04,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:04,186 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash 253468464, now seen corresponding path program 1 times [2019-09-10 07:59:04,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:04,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:04,188 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:04,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:04,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 07:59:04,349 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:04,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:59:04,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:59:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:04,351 INFO L87 Difference]: Start difference. First operand 1448 states and 2199 transitions. Second operand 7 states. [2019-09-10 07:59:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:04,664 INFO L93 Difference]: Finished difference Result 11318 states and 17134 transitions. [2019-09-10 07:59:04,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 07:59:04,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2019-09-10 07:59:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:04,721 INFO L225 Difference]: With dead ends: 11318 [2019-09-10 07:59:04,721 INFO L226 Difference]: Without dead ends: 11318 [2019-09-10 07:59:04,722 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-09-10 07:59:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11318 states. [2019-09-10 07:59:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 4264. [2019-09-10 07:59:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4264 states. [2019-09-10 07:59:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6455 transitions. [2019-09-10 07:59:04,890 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6455 transitions. Word has length 68 [2019-09-10 07:59:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:04,890 INFO L475 AbstractCegarLoop]: Abstraction has 4264 states and 6455 transitions. [2019-09-10 07:59:04,890 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:59:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6455 transitions. [2019-09-10 07:59:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 07:59:04,891 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:04,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:04,892 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:04,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2103084374, now seen corresponding path program 1 times [2019-09-10 07:59:04,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:04,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:04,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:04,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:04,894 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:05,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:05,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 07:59:05,129 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:05,129 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:59:05,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:59:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:05,130 INFO L87 Difference]: Start difference. First operand 4264 states and 6455 transitions. Second operand 7 states. [2019-09-10 07:59:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:05,286 INFO L93 Difference]: Finished difference Result 5678 states and 8586 transitions. [2019-09-10 07:59:05,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:59:05,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-10 07:59:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:05,311 INFO L225 Difference]: With dead ends: 5678 [2019-09-10 07:59:05,311 INFO L226 Difference]: Without dead ends: 5678 [2019-09-10 07:59:05,312 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-09-10 07:59:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2019-09-10 07:59:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 4264. [2019-09-10 07:59:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4264 states. [2019-09-10 07:59:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6423 transitions. [2019-09-10 07:59:05,448 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6423 transitions. Word has length 70 [2019-09-10 07:59:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:05,449 INFO L475 AbstractCegarLoop]: Abstraction has 4264 states and 6423 transitions. [2019-09-10 07:59:05,449 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:59:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6423 transitions. [2019-09-10 07:59:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 07:59:05,450 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:05,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:05,450 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:05,450 INFO L82 PathProgramCache]: Analyzing trace with hash -2123133717, now seen corresponding path program 1 times [2019-09-10 07:59:05,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:05,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:05,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:05,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:05,455 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:05,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:05,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:59:05,537 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:05,538 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:59:05,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:59:05,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:05,540 INFO L87 Difference]: Start difference. First operand 4264 states and 6423 transitions. Second operand 3 states. [2019-09-10 07:59:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:05,595 INFO L93 Difference]: Finished difference Result 6122 states and 9016 transitions. [2019-09-10 07:59:05,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:59:05,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-09-10 07:59:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:05,647 INFO L225 Difference]: With dead ends: 6122 [2019-09-10 07:59:05,647 INFO L226 Difference]: Without dead ends: 6122 [2019-09-10 07:59:05,648 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2019-09-10 07:59:05,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6072. [2019-09-10 07:59:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6072 states. [2019-09-10 07:59:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 8967 transitions. [2019-09-10 07:59:05,780 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 8967 transitions. Word has length 70 [2019-09-10 07:59:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:05,781 INFO L475 AbstractCegarLoop]: Abstraction has 6072 states and 8967 transitions. [2019-09-10 07:59:05,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:59:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 8967 transitions. [2019-09-10 07:59:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 07:59:05,782 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:05,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:05,782 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:05,783 INFO L82 PathProgramCache]: Analyzing trace with hash -48803801, now seen corresponding path program 1 times [2019-09-10 07:59:05,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:05,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:05,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:05,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:05,785 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:05,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:05,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:59:05,843 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:05,843 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:59:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:59:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:05,844 INFO L87 Difference]: Start difference. First operand 6072 states and 8967 transitions. Second operand 3 states. [2019-09-10 07:59:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:05,892 INFO L93 Difference]: Finished difference Result 9340 states and 13770 transitions. [2019-09-10 07:59:05,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:59:05,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-09-10 07:59:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:05,912 INFO L225 Difference]: With dead ends: 9340 [2019-09-10 07:59:05,912 INFO L226 Difference]: Without dead ends: 9340 [2019-09-10 07:59:05,913 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 [2019-09-10 07:59:05,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2019-09-10 07:59:06,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 9338. [2019-09-10 07:59:06,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2019-09-10 07:59:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 13769 transitions. [2019-09-10 07:59:06,061 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 13769 transitions. Word has length 71 [2019-09-10 07:59:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:06,062 INFO L475 AbstractCegarLoop]: Abstraction has 9338 states and 13769 transitions. [2019-09-10 07:59:06,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:59:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 13769 transitions. [2019-09-10 07:59:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 07:59:06,063 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:06,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:06,063 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:06,063 INFO L82 PathProgramCache]: Analyzing trace with hash -773015508, now seen corresponding path program 1 times [2019-09-10 07:59:06,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:06,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:06,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:06,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:06,066 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:06,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:06,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:59:06,187 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:06,187 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:59:06,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:59:06,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:59:06,189 INFO L87 Difference]: Start difference. First operand 9338 states and 13769 transitions. Second operand 5 states. [2019-09-10 07:59:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:06,304 INFO L93 Difference]: Finished difference Result 18118 states and 26366 transitions. [2019-09-10 07:59:06,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:59:06,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-09-10 07:59:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:06,342 INFO L225 Difference]: With dead ends: 18118 [2019-09-10 07:59:06,343 INFO L226 Difference]: Without dead ends: 18118 [2019-09-10 07:59:06,343 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:59:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18118 states. [2019-09-10 07:59:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18118 to 9754. [2019-09-10 07:59:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9754 states. [2019-09-10 07:59:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9754 states to 9754 states and 14169 transitions. [2019-09-10 07:59:06,597 INFO L78 Accepts]: Start accepts. Automaton has 9754 states and 14169 transitions. Word has length 71 [2019-09-10 07:59:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:06,598 INFO L475 AbstractCegarLoop]: Abstraction has 9754 states and 14169 transitions. [2019-09-10 07:59:06,598 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:59:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9754 states and 14169 transitions. [2019-09-10 07:59:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 07:59:06,602 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:06,602 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:06,602 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:06,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1754912134, now seen corresponding path program 1 times [2019-09-10 07:59:06,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:06,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:06,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:06,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:06,605 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-10 07:59:06,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:06,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 07:59:06,732 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:06,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:59:06,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:59:06,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:06,733 INFO L87 Difference]: Start difference. First operand 9754 states and 14169 transitions. Second operand 7 states. [2019-09-10 07:59:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:06,988 INFO L93 Difference]: Finished difference Result 38308 states and 55630 transitions. [2019-09-10 07:59:06,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:59:06,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-10 07:59:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:07,064 INFO L225 Difference]: With dead ends: 38308 [2019-09-10 07:59:07,064 INFO L226 Difference]: Without dead ends: 38308 [2019-09-10 07:59:07,065 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-09-10 07:59:07,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38308 states. [2019-09-10 07:59:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38308 to 16250. [2019-09-10 07:59:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16250 states. [2019-09-10 07:59:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16250 states to 16250 states and 23449 transitions. [2019-09-10 07:59:07,941 INFO L78 Accepts]: Start accepts. Automaton has 16250 states and 23449 transitions. Word has length 98 [2019-09-10 07:59:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:07,941 INFO L475 AbstractCegarLoop]: Abstraction has 16250 states and 23449 transitions. [2019-09-10 07:59:07,941 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:59:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 16250 states and 23449 transitions. [2019-09-10 07:59:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 07:59:07,946 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:07,947 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:07,947 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:07,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:07,947 INFO L82 PathProgramCache]: Analyzing trace with hash -255171438, now seen corresponding path program 1 times [2019-09-10 07:59:07,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:07,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:07,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:07,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:07,949 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-10 07:59:08,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:08,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 07:59:08,084 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:08,085 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:59:08,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:59:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:08,086 INFO L87 Difference]: Start difference. First operand 16250 states and 23449 transitions. Second operand 7 states. [2019-09-10 07:59:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:08,343 INFO L93 Difference]: Finished difference Result 31780 states and 45918 transitions. [2019-09-10 07:59:08,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:59:08,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-09-10 07:59:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:08,413 INFO L225 Difference]: With dead ends: 31780 [2019-09-10 07:59:08,414 INFO L226 Difference]: Without dead ends: 31780 [2019-09-10 07:59:08,415 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:59:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31780 states. [2019-09-10 07:59:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31780 to 22698. [2019-09-10 07:59:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22698 states. [2019-09-10 07:59:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22698 states to 22698 states and 32681 transitions. [2019-09-10 07:59:08,913 INFO L78 Accepts]: Start accepts. Automaton has 22698 states and 32681 transitions. Word has length 98 [2019-09-10 07:59:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:08,914 INFO L475 AbstractCegarLoop]: Abstraction has 22698 states and 32681 transitions. [2019-09-10 07:59:08,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:59:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 22698 states and 32681 transitions. [2019-09-10 07:59:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 07:59:08,919 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:08,919 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:08,919 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:08,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:08,920 INFO L82 PathProgramCache]: Analyzing trace with hash -231426216, now seen corresponding path program 1 times [2019-09-10 07:59:08,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:08,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:08,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:08,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:08,922 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:08,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:08,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:59:08,986 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:08,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:59:08,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:59:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:59:08,987 INFO L87 Difference]: Start difference. First operand 22698 states and 32681 transitions. Second operand 3 states. [2019-09-10 07:59:09,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:09,041 INFO L93 Difference]: Finished difference Result 18450 states and 26599 transitions. [2019-09-10 07:59:09,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:59:09,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-09-10 07:59:09,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:09,075 INFO L225 Difference]: With dead ends: 18450 [2019-09-10 07:59:09,075 INFO L226 Difference]: Without dead ends: 18450 [2019-09-10 07:59:09,077 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 [2019-09-10 07:59:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18450 states. [2019-09-10 07:59:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18450 to 18448. [2019-09-10 07:59:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18448 states. [2019-09-10 07:59:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18448 states to 18448 states and 26598 transitions. [2019-09-10 07:59:09,331 INFO L78 Accepts]: Start accepts. Automaton has 18448 states and 26598 transitions. Word has length 98 [2019-09-10 07:59:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:09,332 INFO L475 AbstractCegarLoop]: Abstraction has 18448 states and 26598 transitions. [2019-09-10 07:59:09,332 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:59:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 18448 states and 26598 transitions. [2019-09-10 07:59:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-10 07:59:09,339 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:09,340 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:09,340 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:09,340 INFO L82 PathProgramCache]: Analyzing trace with hash 544702546, now seen corresponding path program 1 times [2019-09-10 07:59:09,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:09,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:09,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:09,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:09,342 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 07:59:10,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:10,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 07:59:10,030 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:10,030 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:59:10,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:59:10,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:10,031 INFO L87 Difference]: Start difference. First operand 18448 states and 26598 transitions. Second operand 7 states. [2019-09-10 07:59:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:10,313 INFO L93 Difference]: Finished difference Result 31578 states and 45595 transitions. [2019-09-10 07:59:10,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:59:10,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-10 07:59:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:10,353 INFO L225 Difference]: With dead ends: 31578 [2019-09-10 07:59:10,353 INFO L226 Difference]: Without dead ends: 31578 [2019-09-10 07:59:10,353 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-09-10 07:59:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31578 states. [2019-09-10 07:59:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31578 to 23696. [2019-09-10 07:59:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23696 states. [2019-09-10 07:59:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23696 states to 23696 states and 34118 transitions. [2019-09-10 07:59:10,680 INFO L78 Accepts]: Start accepts. Automaton has 23696 states and 34118 transitions. Word has length 99 [2019-09-10 07:59:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:10,681 INFO L475 AbstractCegarLoop]: Abstraction has 23696 states and 34118 transitions. [2019-09-10 07:59:10,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:59:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 23696 states and 34118 transitions. [2019-09-10 07:59:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-10 07:59:10,685 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:10,685 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:10,686 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:10,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:10,686 INFO L82 PathProgramCache]: Analyzing trace with hash 148431430, now seen corresponding path program 1 times [2019-09-10 07:59:10,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:10,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:10,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:10,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:10,688 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:59:10,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:59:10,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 07:59:10,840 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:10,840 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:59:10,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:59:10,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:59:10,841 INFO L87 Difference]: Start difference. First operand 23696 states and 34118 transitions. Second operand 7 states. [2019-09-10 07:59:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:11,088 INFO L93 Difference]: Finished difference Result 36826 states and 53115 transitions. [2019-09-10 07:59:11,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:59:11,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-10 07:59:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:11,129 INFO L225 Difference]: With dead ends: 36826 [2019-09-10 07:59:11,130 INFO L226 Difference]: Without dead ends: 36826 [2019-09-10 07:59:11,130 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:59:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36826 states. [2019-09-10 07:59:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36826 to 28944. [2019-09-10 07:59:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28944 states. [2019-09-10 07:59:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28944 states to 28944 states and 41638 transitions. [2019-09-10 07:59:11,629 INFO L78 Accepts]: Start accepts. Automaton has 28944 states and 41638 transitions. Word has length 99 [2019-09-10 07:59:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:11,630 INFO L475 AbstractCegarLoop]: Abstraction has 28944 states and 41638 transitions. [2019-09-10 07:59:11,630 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:59:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 28944 states and 41638 transitions. [2019-09-10 07:59:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-10 07:59:11,634 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:11,635 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:11,635 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:11,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:11,635 INFO L82 PathProgramCache]: Analyzing trace with hash 842687034, now seen corresponding path program 1 times [2019-09-10 07:59:11,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:11,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:11,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:11,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:11,637 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:11,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:11,735 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:59:11,736 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 100 with the following transitions: [2019-09-10 07:59:11,738 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [114], [116], [119], [127], [129], [132], [140], [142], [145], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [304], [307], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 07:59:11,791 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:59:11,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:59:11,962 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:59:12,579 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:59:12,582 INFO L272 AbstractInterpreter]: Visited 92 different actions 683 times. Merged at 54 different actions 513 times. Widened at 21 different actions 82 times. Performed 2419 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2419 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 64 fixpoints after 12 different actions. Largest state had 131 variables. [2019-09-10 07:59:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:12,588 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:59:12,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:12,589 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 07:59:12,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:12,612 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:59:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:12,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 07:59:12,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:59:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:59:12,867 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:59:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:59:12,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 07:59:12,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 13 [2019-09-10 07:59:12,946 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:59:12,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:59:12,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:59:12,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-10 07:59:12,947 INFO L87 Difference]: Start difference. First operand 28944 states and 41638 transitions. Second operand 7 states. [2019-09-10 07:59:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:13,378 INFO L93 Difference]: Finished difference Result 44698 states and 64715 transitions. [2019-09-10 07:59:13,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:59:13,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-09-10 07:59:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:13,599 INFO L225 Difference]: With dead ends: 44698 [2019-09-10 07:59:13,600 INFO L226 Difference]: Without dead ends: 44698 [2019-09-10 07:59:13,600 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-10 07:59:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44698 states. [2019-09-10 07:59:14,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44698 to 31568. [2019-09-10 07:59:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31568 states. [2019-09-10 07:59:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31568 states to 31568 states and 45462 transitions. [2019-09-10 07:59:14,387 INFO L78 Accepts]: Start accepts. Automaton has 31568 states and 45462 transitions. Word has length 99 [2019-09-10 07:59:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:14,388 INFO L475 AbstractCegarLoop]: Abstraction has 31568 states and 45462 transitions. [2019-09-10 07:59:14,388 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:59:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 31568 states and 45462 transitions. [2019-09-10 07:59:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-10 07:59:14,393 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:14,393 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:14,393 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:14,394 INFO L82 PathProgramCache]: Analyzing trace with hash -514383113, now seen corresponding path program 1 times [2019-09-10 07:59:14,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:14,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:14,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:14,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:14,396 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:14,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:14,653 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:59:14,654 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 101 with the following transitions: [2019-09-10 07:59:14,654 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [114], [116], [119], [127], [129], [132], [140], [142], [145], [153], [155], [158], [166], [168], [171], [174], [178], [180], [183], [184], [186], [188], [193], [195], [198], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [311], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 07:59:14,662 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:59:14,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:59:14,702 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:59:15,241 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:59:15,242 INFO L272 AbstractInterpreter]: Visited 92 different actions 755 times. Merged at 53 different actions 568 times. Widened at 20 different actions 72 times. Performed 2686 root evaluator evaluations with a maximum evaluation depth of 7. Performed 2686 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 99 fixpoints after 21 different actions. Largest state had 131 variables. [2019-09-10 07:59:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:15,242 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:59:15,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:15,243 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-09-10 07:59:15,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:15,282 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:59:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:15,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 07:59:15,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:59:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:59:15,556 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:59:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:59:15,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:59:15,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 14 [2019-09-10 07:59:15,651 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:59:15,651 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-10 07:59:15,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-10 07:59:15,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-09-10 07:59:15,652 INFO L87 Difference]: Start difference. First operand 31568 states and 45462 transitions. Second operand 12 states. [2019-09-10 07:59:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:19,598 INFO L93 Difference]: Finished difference Result 188612 states and 262915 transitions. [2019-09-10 07:59:19,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-10 07:59:19,598 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-09-10 07:59:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:19,824 INFO L225 Difference]: With dead ends: 188612 [2019-09-10 07:59:19,824 INFO L226 Difference]: Without dead ends: 188612 [2019-09-10 07:59:19,827 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=713, Invalid=2947, Unknown=0, NotChecked=0, Total=3660 [2019-09-10 07:59:19,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188612 states. [2019-09-10 07:59:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188612 to 87831. [2019-09-10 07:59:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87831 states. [2019-09-10 07:59:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87831 states to 87831 states and 122491 transitions. [2019-09-10 07:59:23,340 INFO L78 Accepts]: Start accepts. Automaton has 87831 states and 122491 transitions. Word has length 100 [2019-09-10 07:59:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:23,341 INFO L475 AbstractCegarLoop]: Abstraction has 87831 states and 122491 transitions. [2019-09-10 07:59:23,341 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-10 07:59:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 87831 states and 122491 transitions. [2019-09-10 07:59:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-10 07:59:23,347 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:23,347 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:23,347 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:23,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1252193849, now seen corresponding path program 1 times [2019-09-10 07:59:23,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:23,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:23,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:23,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:23,350 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:23,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:23,559 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:59:23,559 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 102 with the following transitions: [2019-09-10 07:59:23,562 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [114], [116], [119], [122], [127], [129], [132], [140], [142], [145], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [304], [307], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 07:59:23,571 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:59:23,571 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:59:23,603 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:59:23,966 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:59:23,967 INFO L272 AbstractInterpreter]: Visited 94 different actions 685 times. Merged at 56 different actions 518 times. Widened at 20 different actions 89 times. Performed 2338 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2338 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 65 fixpoints after 17 different actions. Largest state had 131 variables. [2019-09-10 07:59:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:23,967 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:59:23,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:23,967 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 07:59:23,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:23,982 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:59:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:24,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 07:59:24,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:59:24,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:24,668 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:59:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:25,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:59:25,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2019-09-10 07:59:25,141 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:59:25,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-10 07:59:25,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-10 07:59:25,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2019-09-10 07:59:25,144 INFO L87 Difference]: Start difference. First operand 87831 states and 122491 transitions. Second operand 19 states. [2019-09-10 07:59:25,924 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-10 07:59:26,214 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 07:59:26,657 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-10 07:59:26,972 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 07:59:27,326 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 07:59:27,967 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 07:59:28,334 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 07:59:28,989 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 07:59:29,441 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 07:59:29,809 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 07:59:30,244 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 07:59:30,636 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 07:59:31,051 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 07:59:31,425 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:59:31,843 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 07:59:32,228 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 07:59:32,692 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 07:59:33,125 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 07:59:33,535 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-10 07:59:33,855 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 07:59:34,167 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 07:59:34,548 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-10 07:59:34,870 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 07:59:35,194 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-10 07:59:35,574 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 07:59:35,984 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 07:59:36,360 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 07:59:36,786 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 07:59:37,172 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:59:37,598 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 07:59:37,985 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 07:59:38,344 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 07:59:38,733 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 07:59:39,423 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 07:59:39,786 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 07:59:41,334 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 07:59:41,683 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 07:59:42,074 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 07:59:42,432 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-10 07:59:42,793 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 07:59:43,132 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 07:59:43,460 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 07:59:43,788 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:59:44,105 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:59:44,568 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 07:59:44,944 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 07:59:45,308 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 07:59:45,660 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-10 07:59:46,059 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 07:59:46,386 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-10 07:59:46,692 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 07:59:46,999 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-10 07:59:47,343 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 07:59:47,683 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 07:59:48,108 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:59:48,495 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:59:48,860 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 07:59:49,306 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 07:59:49,674 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 07:59:49,964 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 07:59:50,251 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 07:59:50,572 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 07:59:50,877 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 07:59:51,247 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 07:59:51,623 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 07:59:51,991 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 07:59:52,363 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 07:59:52,888 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 07:59:53,309 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 07:59:53,698 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 07:59:54,115 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 07:59:54,569 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:59:54,879 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:59:55,234 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 07:59:55,671 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 07:59:55,976 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 07:59:56,320 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 07:59:56,751 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 07:59:57,151 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 07:59:57,627 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2019-09-10 07:59:57,997 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 07:59:58,423 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-09-10 07:59:58,771 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 07:59:59,242 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-10 07:59:59,634 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 07:59:59,960 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:00:00,325 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:00:00,680 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:00:01,119 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 08:00:01,523 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:00:02,005 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-10 08:00:03,049 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:00:03,404 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:00:03,831 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:00:04,215 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:00:04,542 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:00:04,976 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-09-10 08:00:05,364 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-10 08:00:05,707 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:00:06,037 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:00:06,390 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:00:06,701 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:00:07,018 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:00:07,345 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:00:07,703 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-10 08:00:08,218 WARN L188 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:00:08,694 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2019-09-10 08:00:09,059 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:00:09,416 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:00:09,752 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:00:10,150 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-10 08:00:11,336 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 08:00:11,668 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:00:11,970 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:00:12,313 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:00:12,603 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:00:12,925 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 08:00:13,243 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:00:13,552 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:00:13,905 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:00:14,231 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:00:14,547 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 08:00:14,930 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-10 08:00:15,325 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:00:15,669 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:00:15,960 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:00:16,277 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:00:16,615 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:16,908 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:17,150 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:17,484 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:17,840 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:00:18,059 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:00:18,315 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:00:18,602 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:00:18,925 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:00:19,266 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:00:19,564 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 08:00:19,785 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:00:20,039 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:00:20,266 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:00:20,489 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:00:20,745 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-10 08:00:20,984 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:00:21,202 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:00:21,414 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:21,667 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:00:21,913 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:00:22,185 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-10 08:00:22,460 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:00:22,679 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:00:22,915 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:00:23,144 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:00:23,621 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:00:23,873 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:24,208 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:00:24,559 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 08:00:24,905 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:00:25,143 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:25,439 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:00:25,915 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:00:26,144 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:00:26,357 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:00:26,715 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:00:27,154 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-10 08:00:27,405 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:27,956 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-10 08:00:28,174 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:00:28,482 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:00:28,907 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:00:29,130 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:00:29,355 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:29,721 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:00:30,036 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 08:00:30,332 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:00:30,736 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:00:31,073 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:00:31,434 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:00:31,667 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-10 08:00:32,017 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-10 08:00:32,369 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:00:32,682 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:00:32,996 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:00:33,238 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:00:33,565 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 08:00:33,884 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:00:34,136 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-10 08:00:34,372 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:00:34,742 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2019-09-10 08:00:35,106 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-10 08:00:35,427 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2019-09-10 08:00:36,019 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:00:36,393 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:00:36,731 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:00:37,028 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:00:37,426 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:00:37,656 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:00:37,897 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:38,223 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2019-09-10 08:00:38,528 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:00:38,807 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:00:39,189 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 08:00:39,520 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 08:00:39,904 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-10 08:00:40,426 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-10 08:00:40,672 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-10 08:00:40,898 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:00:41,296 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:00:41,526 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:41,876 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:00:42,233 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-10 08:00:42,559 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:00:42,866 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 08:00:43,108 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-10 08:00:43,545 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 08:00:43,821 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 08:00:44,198 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:00:44,556 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-10 08:00:44,905 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:00:45,134 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:45,374 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:00:45,778 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:00:46,032 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:00:47,082 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 08:00:47,431 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:00:47,786 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:00:48,100 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 08:00:48,411 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:00:48,819 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 08:00:49,182 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:00:49,486 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 08:00:49,844 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:00:50,257 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:00:50,593 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:00:50,923 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:00:51,209 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:00:51,660 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:00:51,992 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:00:52,417 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:00:53,068 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:00:53,265 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 08:00:53,531 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:53,823 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:00:54,063 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:00:54,310 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 08:00:54,508 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 08:00:54,757 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:54,963 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 08:00:55,223 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:55,670 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:55,952 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:00:56,246 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 08:00:56,636 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:00:57,060 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:00:57,309 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:57,563 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 08:00:57,731 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-10 08:00:57,899 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 08:00:58,167 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:00:58,448 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 08:00:58,683 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 08:00:58,915 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 08:00:59,148 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:00:59,436 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:00:59,692 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:00:59,913 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 08:01:00,082 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 08:01:00,356 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:01:00,775 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:01:01,165 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:01:01,527 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 08:01:02,216 WARN L188 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-10 08:01:02,601 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:01:02,880 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:01:03,124 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 08:01:03,393 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:01:03,637 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 08:01:04,191 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:01:04,766 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:01:05,263 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:01:05,429 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-10 08:01:05,661 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 08:01:05,883 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 08:01:06,192 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 08:01:06,409 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:01:06,772 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:01:07,422 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:01:07,831 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:01:08,059 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 08:01:08,692 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:01:08,976 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 08:01:09,865 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:01:10,135 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-10 08:01:10,409 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-10 08:01:10,664 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:01:10,925 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-10 08:01:11,139 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:01:11,366 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:01:11,595 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:01:11,870 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:01:12,143 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-10 08:01:12,389 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 08:01:12,607 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:01:12,850 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:01:13,099 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:01:13,335 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:01:13,629 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-10 08:01:14,635 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:01:14,889 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:01:15,101 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:01:15,361 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:01:19,005 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-10 08:01:19,398 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:01:19,565 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 08:01:19,848 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:01:20,268 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:01:20,438 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:01:20,706 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 08:01:21,116 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:01:21,310 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 08:01:21,588 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 08:01:21,993 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 08:01:22,395 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-10 08:01:22,564 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 08:01:22,806 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:01:23,233 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-10 08:01:23,633 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:01:24,090 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 08:01:24,529 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 08:01:24,956 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-10 08:01:25,455 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:01:25,800 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:01:26,113 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:01:26,458 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 08:01:26,804 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:01:27,117 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 08:01:27,458 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 08:01:27,801 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-09-10 08:01:28,146 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:01:28,513 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:01:28,924 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 08:01:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:01:29,606 INFO L93 Difference]: Finished difference Result 891895 states and 1230197 transitions. [2019-09-10 08:01:29,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2019-09-10 08:01:29,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2019-09-10 08:01:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:01:30,724 INFO L225 Difference]: With dead ends: 891895 [2019-09-10 08:01:30,724 INFO L226 Difference]: Without dead ends: 891895 [2019-09-10 08:01:30,743 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76052 ImplicationChecksByTransitivity, 106.0s TimeCoverageRelationStatistics Valid=21541, Invalid=138059, Unknown=0, NotChecked=0, Total=159600 [2019-09-10 08:01:31,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891895 states. [2019-09-10 08:01:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891895 to 192136. [2019-09-10 08:01:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192136 states. [2019-09-10 08:01:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192136 states to 192136 states and 264897 transitions. [2019-09-10 08:01:36,268 INFO L78 Accepts]: Start accepts. Automaton has 192136 states and 264897 transitions. Word has length 101 [2019-09-10 08:01:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:01:36,268 INFO L475 AbstractCegarLoop]: Abstraction has 192136 states and 264897 transitions. [2019-09-10 08:01:36,268 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-10 08:01:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 192136 states and 264897 transitions. [2019-09-10 08:01:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-10 08:01:36,281 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:01:36,281 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:01:36,281 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:01:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:01:36,282 INFO L82 PathProgramCache]: Analyzing trace with hash -970174889, now seen corresponding path program 1 times [2019-09-10 08:01:36,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:01:36,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:01:36,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:01:36,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:01:36,285 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:01:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:01:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:01:36,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:01:36,587 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:01:36,587 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-09-10 08:01:36,589 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [140], [142], [145], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [254], [257], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:01:36,592 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:01:36,592 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:01:36,619 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:01:37,094 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:01:37,094 INFO L272 AbstractInterpreter]: Visited 95 different actions 791 times. Merged at 57 different actions 613 times. Widened at 17 different actions 92 times. Performed 2630 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2630 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 75 fixpoints after 18 different actions. Largest state had 131 variables. [2019-09-10 08:01:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:01:37,095 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:01:37,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:01:37,095 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 08:01:37,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:01:37,118 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:01:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:01:37,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-10 08:01:37,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:01:37,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:01:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:01:37,699 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:01:37,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:01:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:01:37,989 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:01:37,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 08:01:37,990 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:01:37,991 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 08:01:37,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 08:01:37,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-09-10 08:01:37,992 INFO L87 Difference]: Start difference. First operand 192136 states and 264897 transitions. Second operand 17 states. [2019-09-10 08:01:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:01:46,133 INFO L93 Difference]: Finished difference Result 1010261 states and 1377686 transitions. [2019-09-10 08:01:46,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-10 08:01:46,134 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2019-09-10 08:01:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:01:47,453 INFO L225 Difference]: With dead ends: 1010261 [2019-09-10 08:01:47,454 INFO L226 Difference]: Without dead ends: 1010261 [2019-09-10 08:01:47,454 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=808, Invalid=2272, Unknown=0, NotChecked=0, Total=3080 [2019-09-10 08:01:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010261 states. [2019-09-10 08:01:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010261 to 439939. [2019-09-10 08:01:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439939 states. [2019-09-10 08:02:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439939 states to 439939 states and 606458 transitions. [2019-09-10 08:02:06,057 INFO L78 Accepts]: Start accepts. Automaton has 439939 states and 606458 transitions. Word has length 102 [2019-09-10 08:02:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:02:06,058 INFO L475 AbstractCegarLoop]: Abstraction has 439939 states and 606458 transitions. [2019-09-10 08:02:06,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 08:02:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 439939 states and 606458 transitions. [2019-09-10 08:02:06,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-10 08:02:06,067 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:02:06,067 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:02:06,067 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:02:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:02:06,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1067777053, now seen corresponding path program 1 times [2019-09-10 08:02:06,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:02:06,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:02:06,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:02:06,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:02:06,069 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:02:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:02:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:02:06,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:02:06,260 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:02:06,260 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-09-10 08:02:06,260 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [127], [129], [132], [135], [140], [142], [145], [148], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [254], [257], [263], [266], [269], [271], [286], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:02:06,262 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:02:06,262 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:02:06,280 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:02:06,729 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:02:06,730 INFO L272 AbstractInterpreter]: Visited 95 different actions 764 times. Merged at 57 different actions 590 times. Widened at 17 different actions 77 times. Performed 2578 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2578 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 67 fixpoints after 15 different actions. Largest state had 131 variables. [2019-09-10 08:02:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:02:06,730 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:02:06,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:02:06,731 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 08:02:06,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:02:06,746 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:02:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:02:06,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 08:02:06,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:02:06,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:02:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:02:07,151 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:02:07,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:02:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:02:07,426 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:02:07,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 08:02:07,426 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:02:07,427 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 08:02:07,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 08:02:07,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2019-09-10 08:02:07,427 INFO L87 Difference]: Start difference. First operand 439939 states and 606458 transitions. Second operand 17 states. [2019-09-10 08:02:08,229 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-09-10 08:02:08,822 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-09-10 08:02:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:02:24,988 INFO L93 Difference]: Finished difference Result 1679476 states and 2297871 transitions. [2019-09-10 08:02:24,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-10 08:02:24,990 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2019-09-10 08:02:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:02:28,139 INFO L225 Difference]: With dead ends: 1679476 [2019-09-10 08:02:28,140 INFO L226 Difference]: Without dead ends: 1679476 [2019-09-10 08:02:28,140 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=649, Invalid=2003, Unknown=0, NotChecked=0, Total=2652 [2019-09-10 08:02:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679476 states. [2019-09-10 08:02:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679476 to 745921. [2019-09-10 08:02:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745921 states. [2019-09-10 08:02:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745921 states to 745921 states and 1023091 transitions. [2019-09-10 08:02:47,037 INFO L78 Accepts]: Start accepts. Automaton has 745921 states and 1023091 transitions. Word has length 102 [2019-09-10 08:02:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:02:47,037 INFO L475 AbstractCegarLoop]: Abstraction has 745921 states and 1023091 transitions. [2019-09-10 08:02:47,037 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 08:02:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 745921 states and 1023091 transitions. [2019-09-10 08:02:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 08:02:47,050 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:02:47,050 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:02:47,050 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:02:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:02:47,051 INFO L82 PathProgramCache]: Analyzing trace with hash -3469356, now seen corresponding path program 1 times [2019-09-10 08:02:47,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:02:47,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:02:47,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:02:47,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:02:47,052 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:02:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:02:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-10 08:02:47,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:02:47,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:02:47,091 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:02:47,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:02:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:02:47,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:02:47,092 INFO L87 Difference]: Start difference. First operand 745921 states and 1023091 transitions. Second operand 3 states. [2019-09-10 08:02:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:02:55,891 INFO L93 Difference]: Finished difference Result 628899 states and 856476 transitions. [2019-09-10 08:02:55,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:02:55,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-09-10 08:02:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:02:57,597 INFO L225 Difference]: With dead ends: 628899 [2019-09-10 08:02:57,597 INFO L226 Difference]: Without dead ends: 628899 [2019-09-10 08:02:57,597 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 [2019-09-10 08:02:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628899 states. [2019-09-10 08:03:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628899 to 628899. [2019-09-10 08:03:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628899 states. [2019-09-10 08:03:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628899 states to 628899 states and 856476 transitions. [2019-09-10 08:03:10,875 INFO L78 Accepts]: Start accepts. Automaton has 628899 states and 856476 transitions. Word has length 103 [2019-09-10 08:03:10,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:03:10,875 INFO L475 AbstractCegarLoop]: Abstraction has 628899 states and 856476 transitions. [2019-09-10 08:03:10,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:03:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 628899 states and 856476 transitions. [2019-09-10 08:03:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 08:03:10,883 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:03:10,883 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:03:10,883 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:03:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:03:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash -913984314, now seen corresponding path program 1 times [2019-09-10 08:03:10,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:03:10,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:03:10,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:03:10,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:03:10,885 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:03:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:03:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:03:10,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:03:10,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:03:10,941 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:03:10,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:03:10,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:03:10,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:03:10,941 INFO L87 Difference]: Start difference. First operand 628899 states and 856476 transitions. Second operand 3 states. [2019-09-10 08:03:17,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:03:17,382 INFO L93 Difference]: Finished difference Result 352443 states and 472307 transitions. [2019-09-10 08:03:17,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:03:17,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-09-10 08:03:17,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:03:17,753 INFO L225 Difference]: With dead ends: 352443 [2019-09-10 08:03:17,753 INFO L226 Difference]: Without dead ends: 352443 [2019-09-10 08:03:17,754 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 [2019-09-10 08:03:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352443 states. [2019-09-10 08:03:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352443 to 352441. [2019-09-10 08:03:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352441 states. [2019-09-10 08:03:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352441 states to 352441 states and 472306 transitions. [2019-09-10 08:03:27,223 INFO L78 Accepts]: Start accepts. Automaton has 352441 states and 472306 transitions. Word has length 103 [2019-09-10 08:03:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:03:27,223 INFO L475 AbstractCegarLoop]: Abstraction has 352441 states and 472306 transitions. [2019-09-10 08:03:27,223 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:03:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 352441 states and 472306 transitions. [2019-09-10 08:03:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 08:03:27,229 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:03:27,229 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:03:27,229 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:03:27,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:03:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1552317475, now seen corresponding path program 1 times [2019-09-10 08:03:27,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:03:27,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:03:27,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:03:27,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:03:27,231 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:03:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:03:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:03:27,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:03:27,483 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:03:27,484 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 104 with the following transitions: [2019-09-10 08:03:27,484 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [138], [140], [142], [145], [148], [153], [155], [158], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [211], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:03:27,487 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:03:27,487 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:03:27,511 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:03:28,021 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:03:28,022 INFO L272 AbstractInterpreter]: Visited 96 different actions 938 times. Merged at 58 different actions 749 times. Widened at 18 different actions 119 times. Performed 3020 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3020 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 88 fixpoints after 20 different actions. Largest state had 131 variables. [2019-09-10 08:03:28,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:03:28,022 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:03:28,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:03:28,022 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 08:03:28,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:03:28,037 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:03:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:03:28,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 08:03:28,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:03:28,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:03:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:03:28,627 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:03:28,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:03:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:03:28,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:03:28,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 08:03:28,956 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:03:28,957 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 08:03:28,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 08:03:28,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2019-09-10 08:03:28,957 INFO L87 Difference]: Start difference. First operand 352441 states and 472306 transitions. Second operand 17 states. [2019-09-10 08:03:30,637 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2019-09-10 08:03:31,899 WARN L188 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2019-09-10 08:03:33,462 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2019-09-10 08:03:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:03:40,539 INFO L93 Difference]: Finished difference Result 2188681 states and 2900094 transitions. [2019-09-10 08:03:40,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-10 08:03:40,540 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2019-09-10 08:03:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:03:54,600 INFO L225 Difference]: With dead ends: 2188681 [2019-09-10 08:03:54,600 INFO L226 Difference]: Without dead ends: 2188681 [2019-09-10 08:03:54,601 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1016, Invalid=2890, Unknown=0, NotChecked=0, Total=3906 [2019-09-10 08:03:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188681 states. [2019-09-10 08:04:20,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188681 to 802513. [2019-09-10 08:04:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802513 states. [2019-09-10 08:04:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802513 states to 802513 states and 1071467 transitions. [2019-09-10 08:04:21,685 INFO L78 Accepts]: Start accepts. Automaton has 802513 states and 1071467 transitions. Word has length 103 [2019-09-10 08:04:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:04:21,686 INFO L475 AbstractCegarLoop]: Abstraction has 802513 states and 1071467 transitions. [2019-09-10 08:04:21,686 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 08:04:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 802513 states and 1071467 transitions. [2019-09-10 08:04:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:04:21,695 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:04:21,695 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:04:21,696 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:04:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:04:21,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1655223693, now seen corresponding path program 1 times [2019-09-10 08:04:21,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:04:21,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:04:21,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:04:21,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:04:21,697 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:04:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:04:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:04:21,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:04:21,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:04:21,753 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:04:21,754 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:04:21,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:04:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:04:21,754 INFO L87 Difference]: Start difference. First operand 802513 states and 1071467 transitions. Second operand 3 states. [2019-09-10 08:04:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:04:24,664 INFO L93 Difference]: Finished difference Result 456115 states and 599190 transitions. [2019-09-10 08:04:24,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:04:24,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-09-10 08:04:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:04:25,136 INFO L225 Difference]: With dead ends: 456115 [2019-09-10 08:04:25,136 INFO L226 Difference]: Without dead ends: 456115 [2019-09-10 08:04:25,137 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 [2019-09-10 08:04:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456115 states. [2019-09-10 08:04:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456115 to 452585. [2019-09-10 08:04:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452585 states. [2019-09-10 08:04:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452585 states to 452585 states and 595661 transitions. [2019-09-10 08:04:32,890 INFO L78 Accepts]: Start accepts. Automaton has 452585 states and 595661 transitions. Word has length 104 [2019-09-10 08:04:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:04:32,890 INFO L475 AbstractCegarLoop]: Abstraction has 452585 states and 595661 transitions. [2019-09-10 08:04:32,891 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:04:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 452585 states and 595661 transitions. [2019-09-10 08:04:32,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:04:32,898 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:04:32,898 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:04:32,898 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:04:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:04:32,898 INFO L82 PathProgramCache]: Analyzing trace with hash 2067985229, now seen corresponding path program 1 times [2019-09-10 08:04:32,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:04:32,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:04:32,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:04:32,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:04:32,900 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:04:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:04:42,698 WARN L188 SmtUtils]: Spent 9.50 s on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2019-09-10 08:04:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:04:43,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:04:43,393 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:04:43,393 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2019-09-10 08:04:43,393 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [138], [140], [142], [145], [148], [153], [155], [158], [161], [164], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:04:43,395 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:04:43,396 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:04:43,414 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:04:43,715 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:04:43,716 INFO L272 AbstractInterpreter]: Visited 97 different actions 619 times. Merged at 59 different actions 464 times. Widened at 15 different actions 45 times. Performed 2066 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2066 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 52 fixpoints after 13 different actions. Largest state had 131 variables. [2019-09-10 08:04:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:04:43,716 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:04:43,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:04:43,717 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 08:04:43,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:04:43,731 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:04:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:04:43,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 08:04:43,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:04:44,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:04:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:04:45,106 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:04:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:04:45,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:04:45,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 37 [2019-09-10 08:04:45,634 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:04:45,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 08:04:45,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 08:04:45,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2019-09-10 08:04:45,636 INFO L87 Difference]: Start difference. First operand 452585 states and 595661 transitions. Second operand 28 states. [2019-09-10 08:04:49,159 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 08:04:49,451 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2019-09-10 08:04:49,821 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2019-09-10 08:04:50,273 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2019-09-10 08:04:50,718 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2019-09-10 08:04:51,012 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2019-09-10 08:04:51,158 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-10 08:04:51,574 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2019-09-10 08:04:51,804 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:04:52,169 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 08:04:52,427 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:04:52,693 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 08:04:53,299 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 08:04:53,638 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 08:04:53,928 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:04:54,094 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 08:04:54,450 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2019-09-10 08:04:54,781 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:04:55,166 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:04:55,473 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:04:55,950 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:04:56,183 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:04:56,681 WARN L188 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:04:57,102 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:04:57,306 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:04:57,691 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:04:57,987 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:04:58,295 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:04:58,587 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2019-09-10 08:04:59,098 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:04:59,326 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:04:59,724 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:05:00,005 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:05:00,334 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 08:05:00,563 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:05:00,946 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:05:01,317 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:05:01,679 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:05:02,122 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:05:02,555 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2019-09-10 08:05:02,931 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:05:03,263 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:05:03,597 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-09-10 08:05:03,820 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 08:05:04,159 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:05:04,390 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:05:04,710 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:05:04,971 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 08:05:05,294 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:05:05,750 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:05:06,563 WARN L188 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 08:05:06,991 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2019-09-10 08:05:07,234 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:05:07,628 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-10 08:05:07,966 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:05:08,277 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2019-09-10 08:05:08,740 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-10 08:05:09,182 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 08:05:09,526 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-09-10 08:05:09,753 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 08:05:10,122 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-10 08:05:10,371 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:05:10,693 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 08:05:10,929 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2019-09-10 08:05:11,293 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 08:05:11,814 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2019-09-10 08:05:12,140 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-10 08:05:12,616 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2019-09-10 08:05:12,860 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-10 08:05:13,105 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-10 08:05:13,472 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:05:13,826 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 08:05:14,367 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2019-09-10 08:05:14,640 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 08:05:15,581 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 08:05:15,933 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 08:05:16,300 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 08:05:16,743 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-09-10 08:05:16,976 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 08:05:17,145 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:05:17,574 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 08:05:17,808 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 08:05:18,176 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:05:18,518 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 08:05:19,005 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-09-10 08:05:19,500 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 08:05:19,657 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-10 08:05:20,103 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-10 08:05:20,909 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2019-09-10 08:05:21,318 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2019-09-10 08:05:21,836 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2019-09-10 08:05:22,216 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 08:05:22,654 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2019-09-10 08:05:23,278 WARN L188 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2019-09-10 08:05:23,786 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2019-09-10 08:05:24,180 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-09-10 08:05:24,440 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:05:24,900 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2019-09-10 08:05:25,350 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2019-09-10 08:05:26,157 WARN L188 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 113 [2019-09-10 08:05:26,625 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2019-09-10 08:05:27,170 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 105 [2019-09-10 08:05:27,546 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 86 [2019-09-10 08:05:28,020 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2019-09-10 08:05:28,762 WARN L188 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 115 [2019-09-10 08:05:29,384 WARN L188 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 108 [2019-09-10 08:05:29,938 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2019-09-10 08:05:30,285 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 08:05:30,805 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2019-09-10 08:05:31,422 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2019-09-10 08:05:31,917 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 114 [2019-09-10 08:05:32,289 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2019-09-10 08:05:32,476 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 08:05:33,190 WARN L188 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 113 [2019-09-10 08:05:33,634 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2019-09-10 08:05:34,092 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 102 [2019-09-10 08:05:34,628 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 117 [2019-09-10 08:05:35,034 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2019-09-10 08:05:35,335 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:05:35,518 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 08:05:36,246 WARN L188 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 115 [2019-09-10 08:05:36,746 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 107 [2019-09-10 08:05:37,044 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 08:05:37,439 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2019-09-10 08:05:37,890 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2019-09-10 08:05:38,301 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 96 [2019-09-10 08:05:38,512 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:05:38,947 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-10 08:05:39,436 WARN L188 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2019-09-10 08:05:39,757 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-10 08:05:39,969 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-10 08:05:40,546 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 109 [2019-09-10 08:05:40,841 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:05:41,502 WARN L188 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 125 [2019-09-10 08:05:42,056 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2019-09-10 08:05:42,482 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2019-09-10 08:05:42,710 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:05:43,177 WARN L188 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 117 [2019-09-10 08:05:43,565 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2019-09-10 08:05:43,765 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-10 08:05:44,028 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 08:05:44,332 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2019-09-10 08:05:44,730 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 08:05:45,613 WARN L188 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 127 [2019-09-10 08:05:46,541 WARN L188 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 123 [2019-09-10 08:05:47,091 WARN L188 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 107 [2019-09-10 08:05:47,405 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:05:48,049 WARN L188 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 114 [2019-09-10 08:05:48,461 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2019-09-10 08:05:49,104 WARN L188 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 114 [2019-09-10 08:05:49,510 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-10 08:05:49,712 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 08:05:50,112 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 08:05:51,062 WARN L188 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 125 [2019-09-10 08:05:51,649 WARN L188 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2019-09-10 08:05:51,983 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-09-10 08:05:52,742 WARN L188 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 117 [2019-09-10 08:05:53,203 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-10 08:05:53,776 WARN L188 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 108 [2019-09-10 08:05:54,443 WARN L188 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 116 [2019-09-10 08:05:54,981 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 108 [2019-09-10 08:05:55,826 WARN L188 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 119 [2019-09-10 08:05:56,338 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2019-09-10 08:05:56,997 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2019-09-10 08:05:57,671 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-10 08:05:58,039 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-09-10 08:05:58,278 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-09-10 08:05:58,694 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-09-10 08:05:59,012 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:05:59,506 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-10 08:05:59,716 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 08:06:00,057 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-10 08:06:00,611 WARN L188 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2019-09-10 08:06:00,904 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:01,267 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 08:06:01,536 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 08:06:01,837 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2019-09-10 08:06:02,242 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2019-09-10 08:06:02,620 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2019-09-10 08:06:03,133 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2019-09-10 08:06:03,558 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2019-09-10 08:06:03,843 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 08:06:04,350 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 08:06:04,637 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 08:06:04,998 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-10 08:06:05,594 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 08:06:05,898 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2019-09-10 08:06:06,287 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2019-09-10 08:06:06,672 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-10 08:06:06,988 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-10 08:06:07,364 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2019-09-10 08:06:07,860 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2019-09-10 08:06:08,148 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 08:06:08,476 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 08:06:08,650 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 08:06:09,428 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 08:06:09,799 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:06:10,204 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:06:10,463 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2019-09-10 08:06:10,808 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-09-10 08:06:11,196 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 08:06:11,737 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2019-09-10 08:06:12,139 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 08:06:12,551 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:12,704 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 08:06:12,943 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 08:06:13,261 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 08:06:13,579 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2019-09-10 08:06:14,001 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 08:06:14,276 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:06:14,663 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:06:14,920 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:06:15,241 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:06:15,654 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2019-09-10 08:06:16,207 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:06:16,531 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-10 08:06:17,011 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:06:17,340 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-10 08:06:17,520 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 08:06:17,788 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-10 08:06:18,213 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:06:18,476 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2019-09-10 08:06:18,810 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:06:19,032 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:06:19,509 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 08:06:19,911 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:06:20,515 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2019-09-10 08:06:20,917 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:06:21,435 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2019-09-10 08:06:21,744 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:06:22,001 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-10 08:06:22,448 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-10 08:06:22,706 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2019-09-10 08:06:23,053 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-10 08:06:23,463 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:06:24,092 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2019-09-10 08:06:24,399 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-10 08:06:24,691 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:06:25,064 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2019-09-10 08:06:25,663 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 08:06:26,424 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 08:06:26,643 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 08:06:26,873 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 08:06:27,095 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 08:06:27,393 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:06:27,715 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 08:06:27,981 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 08:06:28,390 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 08:06:28,774 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-10 08:06:28,984 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-10 08:06:29,199 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-10 08:06:29,428 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2019-09-10 08:06:29,747 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:06:30,077 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 08:06:30,674 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2019-09-10 08:06:30,978 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2019-09-10 08:06:31,352 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:06:31,643 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-10 08:06:31,963 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2019-09-10 08:06:32,473 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2019-09-10 08:06:32,879 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2019-09-10 08:06:33,295 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:06:33,541 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:06:33,775 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-10 08:06:33,940 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-10 08:06:34,094 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 08:06:34,842 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-10 08:06:35,151 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-10 08:06:35,524 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:06:35,824 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 08:06:36,177 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 08:06:36,687 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2019-09-10 08:06:37,131 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2019-09-10 08:06:37,601 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2019-09-10 08:06:37,943 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-10 08:06:38,181 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 08:06:38,538 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-10 08:06:38,973 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 08:06:39,952 WARN L188 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:06:40,197 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:06:40,536 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 08:06:40,925 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:06:41,449 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 08:06:41,877 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 08:06:42,167 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 08:06:42,536 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-09-10 08:06:42,977 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-10 08:06:43,278 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 08:06:43,721 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-10 08:06:44,200 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:06:44,705 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2019-09-10 08:06:45,187 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2019-09-10 08:06:45,866 WARN L188 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2019-09-10 08:06:46,497 WARN L188 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2019-09-10 08:06:47,188 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2019-09-10 08:06:47,736 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2019-09-10 08:06:48,493 WARN L188 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2019-09-10 08:06:49,273 WARN L188 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2019-09-10 08:06:49,826 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2019-09-10 08:06:50,454 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2019-09-10 08:06:51,678 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 08:06:51,955 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 08:06:52,275 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-10 08:06:52,623 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:06:52,987 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-10 08:06:53,259 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 08:06:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:06:54,689 INFO L93 Difference]: Finished difference Result 796429 states and 1045315 transitions. [2019-09-10 08:06:54,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2019-09-10 08:06:54,690 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 104 [2019-09-10 08:06:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:06:55,569 INFO L225 Difference]: With dead ends: 796429 [2019-09-10 08:06:55,570 INFO L226 Difference]: Without dead ends: 796429 [2019-09-10 08:06:55,575 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 182 SyntacticMatches, 10 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65728 ImplicationChecksByTransitivity, 126.7s TimeCoverageRelationStatistics Valid=18715, Invalid=139291, Unknown=0, NotChecked=0, Total=158006 [2019-09-10 08:06:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796429 states. [2019-09-10 08:07:02,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796429 to 441031. [2019-09-10 08:07:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441031 states. [2019-09-10 08:07:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441031 states to 441031 states and 585121 transitions. [2019-09-10 08:07:04,455 INFO L78 Accepts]: Start accepts. Automaton has 441031 states and 585121 transitions. Word has length 104 [2019-09-10 08:07:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:07:04,455 INFO L475 AbstractCegarLoop]: Abstraction has 441031 states and 585121 transitions. [2019-09-10 08:07:04,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 08:07:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 441031 states and 585121 transitions. [2019-09-10 08:07:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:07:04,461 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:07:04,461 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:07:04,461 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:07:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:04,462 INFO L82 PathProgramCache]: Analyzing trace with hash 738884528, now seen corresponding path program 1 times [2019-09-10 08:07:04,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:07:04,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:04,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:04,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:04,463 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:07:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:04,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:07:04,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:07:04,517 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:07:04,518 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:07:04,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:07:04,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:07:04,518 INFO L87 Difference]: Start difference. First operand 441031 states and 585121 transitions. Second operand 3 states. [2019-09-10 08:07:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:07:05,003 INFO L93 Difference]: Finished difference Result 256744 states and 336459 transitions. [2019-09-10 08:07:05,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:07:05,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-09-10 08:07:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:07:05,248 INFO L225 Difference]: With dead ends: 256744 [2019-09-10 08:07:05,248 INFO L226 Difference]: Without dead ends: 256744 [2019-09-10 08:07:05,249 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 [2019-09-10 08:07:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256744 states. [2019-09-10 08:07:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256744 to 256742. [2019-09-10 08:07:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256742 states. [2019-09-10 08:07:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256742 states to 256742 states and 336458 transitions. [2019-09-10 08:07:12,934 INFO L78 Accepts]: Start accepts. Automaton has 256742 states and 336458 transitions. Word has length 104 [2019-09-10 08:07:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:07:12,934 INFO L475 AbstractCegarLoop]: Abstraction has 256742 states and 336458 transitions. [2019-09-10 08:07:12,934 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:07:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 256742 states and 336458 transitions. [2019-09-10 08:07:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:07:12,940 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:07:12,940 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:07:12,940 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:07:12,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:12,940 INFO L82 PathProgramCache]: Analyzing trace with hash -415359891, now seen corresponding path program 1 times [2019-09-10 08:07:12,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:07:12,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:12,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:12,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:12,942 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:07:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:13,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:13,918 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:07:13,918 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2019-09-10 08:07:13,918 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [140], [142], [145], [148], [151], [153], [155], [158], [161], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [204], [207], [213], [216], [219], [221], [238], [241], [244], [246], [254], [257], [263], [266], [269], [271], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:07:13,921 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:07:13,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:07:13,939 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:07:14,275 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:07:14,276 INFO L272 AbstractInterpreter]: Visited 97 different actions 813 times. Merged at 59 different actions 637 times. Widened at 18 different actions 88 times. Performed 2617 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2617 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 74 fixpoints after 18 different actions. Largest state had 131 variables. [2019-09-10 08:07:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:14,276 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:07:14,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:14,276 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:07:14,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:14,287 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:07:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:15,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-10 08:07:15,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:07:15,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:15,585 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:07:15,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:15,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:15,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:16,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:07:16,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 41 [2019-09-10 08:07:16,252 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:07:16,253 INFO L454 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-09-10 08:07:16,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-09-10 08:07:16,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1491, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 08:07:16,254 INFO L87 Difference]: Start difference. First operand 256742 states and 336458 transitions. Second operand 30 states. [2019-09-10 08:07:19,050 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-09-10 08:07:19,454 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2019-09-10 08:07:19,687 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2019-09-10 08:07:19,880 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-10 08:07:20,730 WARN L188 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-09-10 08:07:21,006 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2019-09-10 08:07:21,509 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2019-09-10 08:07:23,313 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-09-10 08:07:26,825 WARN L188 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2019-09-10 08:07:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:07:29,173 INFO L93 Difference]: Finished difference Result 516545 states and 679389 transitions. [2019-09-10 08:07:29,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-09-10 08:07:29,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 104 [2019-09-10 08:07:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:07:29,785 INFO L225 Difference]: With dead ends: 516545 [2019-09-10 08:07:29,785 INFO L226 Difference]: Without dead ends: 516545 [2019-09-10 08:07:29,786 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1340, Invalid=6142, Unknown=0, NotChecked=0, Total=7482 [2019-09-10 08:07:30,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516545 states. [2019-09-10 08:07:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516545 to 259412. [2019-09-10 08:07:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259412 states. [2019-09-10 08:07:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259412 states to 259412 states and 340526 transitions. [2019-09-10 08:07:34,722 INFO L78 Accepts]: Start accepts. Automaton has 259412 states and 340526 transitions. Word has length 104 [2019-09-10 08:07:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:07:34,722 INFO L475 AbstractCegarLoop]: Abstraction has 259412 states and 340526 transitions. [2019-09-10 08:07:34,722 INFO L476 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-09-10 08:07:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 259412 states and 340526 transitions. [2019-09-10 08:07:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-10 08:07:34,727 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:07:34,727 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:07:34,727 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:07:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1301778898, now seen corresponding path program 1 times [2019-09-10 08:07:34,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:07:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:34,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:34,729 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:07:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 08:07:34,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:07:34,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:07:34,773 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:07:34,773 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:07:34,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:07:34,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:07:34,774 INFO L87 Difference]: Start difference. First operand 259412 states and 340526 transitions. Second operand 3 states. [2019-09-10 08:07:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:07:35,127 INFO L93 Difference]: Finished difference Result 164961 states and 215865 transitions. [2019-09-10 08:07:35,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:07:35,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-09-10 08:07:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:07:35,279 INFO L225 Difference]: With dead ends: 164961 [2019-09-10 08:07:35,280 INFO L226 Difference]: Without dead ends: 164961 [2019-09-10 08:07:35,280 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 [2019-09-10 08:07:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164961 states. [2019-09-10 08:07:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164961 to 164961. [2019-09-10 08:07:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164961 states. [2019-09-10 08:07:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164961 states to 164961 states and 215865 transitions. [2019-09-10 08:07:37,692 INFO L78 Accepts]: Start accepts. Automaton has 164961 states and 215865 transitions. Word has length 104 [2019-09-10 08:07:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:07:37,693 INFO L475 AbstractCegarLoop]: Abstraction has 164961 states and 215865 transitions. [2019-09-10 08:07:37,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:07:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 164961 states and 215865 transitions. [2019-09-10 08:07:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-10 08:07:37,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:07:37,696 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:07:37,697 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:07:37,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:37,697 INFO L82 PathProgramCache]: Analyzing trace with hash -357427953, now seen corresponding path program 1 times [2019-09-10 08:07:37,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:07:37,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:37,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:37,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:07:37,698 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:07:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:42,230 WARN L188 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-09-10 08:07:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:42,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:42,623 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:07:42,624 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 106 with the following transitions: [2019-09-10 08:07:42,624 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [127], [129], [132], [135], [140], [142], [145], [148], [151], [153], [155], [158], [161], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [204], [207], [213], [216], [219], [221], [238], [241], [244], [246], [254], [259], [263], [266], [269], [271], [279], [282], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:07:42,627 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:07:42,627 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:07:42,640 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:07:43,034 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:07:43,035 INFO L272 AbstractInterpreter]: Visited 98 different actions 677 times. Merged at 60 different actions 513 times. Widened at 17 different actions 57 times. Performed 2272 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2272 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 59 fixpoints after 19 different actions. Largest state had 131 variables. [2019-09-10 08:07:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:07:43,035 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:07:43,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:07:43,036 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-09-10 08:07:43,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:07:43,063 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:07:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:07:43,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-10 08:07:43,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:07:43,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:07:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:44,820 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:07:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:07:45,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:07:45,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 37 [2019-09-10 08:07:45,316 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:07:45,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 08:07:45,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 08:07:45,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2019-09-10 08:07:45,317 INFO L87 Difference]: Start difference. First operand 164961 states and 215865 transitions. Second operand 28 states. [2019-09-10 08:07:48,801 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-10 08:07:49,055 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 08:07:49,420 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 08:07:49,876 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2019-09-10 08:07:50,082 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 08:07:52,206 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 08:07:52,709 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 95 [2019-09-10 08:07:53,106 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2019-09-10 08:07:53,456 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 08:07:53,719 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 08:07:53,977 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 08:07:54,327 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:07:54,606 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:07:54,819 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 08:07:55,323 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:07:55,734 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 08:07:56,022 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:07:56,257 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 08:07:56,597 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:07:56,999 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-10 08:07:57,303 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-10 08:07:57,544 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 08:07:57,912 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 08:07:58,183 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 08:07:58,324 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-09-10 08:07:58,490 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 08:07:58,750 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 08:07:59,057 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-10 08:07:59,406 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-10 08:07:59,759 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-09-10 08:07:59,949 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-10 08:08:00,126 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-10 08:08:00,435 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2019-09-10 08:08:00,945 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2019-09-10 08:08:01,261 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-10 08:08:01,788 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 104 [2019-09-10 08:08:02,223 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 08:08:02,696 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 08:08:02,979 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2019-09-10 08:08:03,303 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2019-09-10 08:08:03,464 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-10 08:08:03,958 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2019-09-10 08:08:04,463 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2019-09-10 08:08:04,902 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 08:08:05,284 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 91 [2019-09-10 08:08:05,754 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 08:08:06,184 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2019-09-10 08:08:06,454 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-10 08:08:07,091 WARN L188 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-09-10 08:08:07,514 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-09-10 08:08:07,936 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-10 08:08:08,412 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2019-09-10 08:08:08,810 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 94 [2019-09-10 08:08:09,252 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2019-09-10 08:08:09,650 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2019-09-10 08:08:10,098 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2019-09-10 08:08:10,368 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2019-09-10 08:08:10,800 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2019-09-10 08:08:11,357 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:08:11,664 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-10 08:08:11,939 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-10 08:08:12,428 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 104 [2019-09-10 08:08:12,778 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2019-09-10 08:08:13,077 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 08:08:13,276 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-10 08:08:13,634 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 08:08:13,806 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-10 08:08:14,115 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-10 08:08:14,402 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 08:08:15,152 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-10 08:08:15,366 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 08:08:15,776 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2019-09-10 08:08:16,138 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-10 08:08:16,463 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:08:16,661 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-10 08:08:16,949 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-09-10 08:08:17,192 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:08:17,667 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2019-09-10 08:08:18,206 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2019-09-10 08:08:19,090 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2019-09-10 08:08:19,516 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:08:19,740 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 08:08:20,168 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2019-09-10 08:08:20,487 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 08:08:20,779 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 08:08:20,985 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 08:08:21,260 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-10 08:08:21,502 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-10 08:08:22,022 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 101 [2019-09-10 08:08:22,380 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2019-09-10 08:08:22,683 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 08:08:22,908 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 08:08:23,243 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-10 08:08:23,400 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-09-10 08:08:23,735 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 08:08:24,017 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 08:08:24,239 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 08:08:24,616 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 08:08:24,927 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-10 08:08:25,177 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:08:25,752 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 08:08:26,136 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-10 08:08:26,389 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-10 08:08:27,266 WARN L188 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2019-09-10 08:08:27,626 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 08:08:27,894 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 08:08:28,271 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-10 08:08:28,714 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:08:29,063 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-09-10 08:08:29,444 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2019-09-10 08:08:29,660 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 08:08:29,914 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 08:08:30,270 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-09-10 08:08:30,684 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:08:31,027 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 08:08:31,349 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 08:08:31,756 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-10 08:08:32,191 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-10 08:08:32,480 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 08:08:32,695 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-10 08:08:33,015 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-10 08:08:33,351 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-10 08:08:33,908 WARN L188 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-09-10 08:08:34,313 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2019-09-10 08:08:34,714 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:08:34,918 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:08:35,376 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-10 08:08:35,598 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 08:08:35,836 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-10 08:08:36,160 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-10 08:08:36,460 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-09-10 08:08:36,719 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 08:08:37,011 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-10 08:08:37,419 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 08:08:37,772 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2019-09-10 08:08:38,127 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 08:08:38,322 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-10 08:08:38,646 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2019-09-10 08:08:38,880 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 08:08:39,281 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2019-09-10 08:08:39,888 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-10 08:08:40,189 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 08:08:40,440 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 08:08:40,845 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 08:08:41,225 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-10 08:08:41,488 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 08:08:41,826 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-10 08:08:42,182 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-09-10 08:08:42,428 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-10 08:08:42,860 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-10 08:08:43,147 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 08:08:43,369 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 08:08:43,852 WARN L188 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2019-09-10 08:08:44,010 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 08:08:44,283 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 08:08:44,475 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 08:08:44,762 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-09-10 08:08:45,238 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2019-09-10 08:08:45,668 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 08:08:46,039 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 08:08:46,465 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2019-09-10 08:08:47,035 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 97 [2019-09-10 08:08:47,272 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 08:08:47,556 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 08:08:47,786 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 08:08:48,267 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2019-09-10 08:08:48,604 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 08:08:48,875 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-10 08:08:49,137 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 08:08:49,541 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 08:08:49,714 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 08:08:50,010 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2019-09-10 08:08:50,522 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2019-09-10 08:08:51,135 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 100 [2019-09-10 08:08:51,640 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2019-09-10 08:08:52,022 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:08:52,374 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 08:08:52,936 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2019-09-10 08:08:53,301 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-10 08:08:53,555 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 08:08:53,742 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 08:08:54,141 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2019-09-10 08:08:54,706 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-09-10 08:08:55,136 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2019-09-10 08:08:55,731 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2019-09-10 08:08:56,097 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:08:56,387 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 08:08:56,826 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-09-10 08:08:57,145 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 08:08:57,354 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 08:08:57,778 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-10 08:08:58,088 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 08:08:58,617 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-10 08:08:58,778 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-10 08:08:59,098 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 08:08:59,426 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 08:08:59,783 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-10 08:09:00,101 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 08:09:00,499 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 08:09:00,751 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-10 08:09:01,259 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 97 [2019-09-10 08:09:01,630 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2019-09-10 08:09:02,383 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 100 [2019-09-10 08:09:02,581 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-10 08:09:02,768 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 08:09:03,110 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 08:09:03,652 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 91 [2019-09-10 08:09:04,063 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2019-09-10 08:09:04,383 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2019-09-10 08:09:04,773 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 08:09:05,315 WARN L188 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 103 [2019-09-10 08:09:05,506 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-10 08:09:06,127 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 94 [2019-09-10 08:09:06,481 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 84 [2019-09-10 08:09:06,894 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 08:09:07,471 WARN L188 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 104 [2019-09-10 08:09:07,958 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 08:09:08,314 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 08:09:08,715 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 85 [2019-09-10 08:09:09,283 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-10 08:09:10,265 WARN L188 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 08:09:10,702 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:09:11,079 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 08:09:11,654 WARN L188 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-10 08:09:12,023 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-10 08:09:12,292 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 08:09:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:09:13,392 INFO L93 Difference]: Finished difference Result 435821 states and 562103 transitions. [2019-09-10 08:09:13,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2019-09-10 08:09:13,393 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 105 [2019-09-10 08:09:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:09:14,463 INFO L225 Difference]: With dead ends: 435821 [2019-09-10 08:09:14,463 INFO L226 Difference]: Without dead ends: 435821 [2019-09-10 08:09:14,465 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 174 SyntacticMatches, 20 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38416 ImplicationChecksByTransitivity, 84.6s TimeCoverageRelationStatistics Valid=13159, Invalid=84497, Unknown=0, NotChecked=0, Total=97656 [2019-09-10 08:09:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435821 states. [2019-09-10 08:09:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435821 to 166539. [2019-09-10 08:09:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166539 states. [2019-09-10 08:09:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166539 states to 166539 states and 217971 transitions. [2019-09-10 08:09:17,429 INFO L78 Accepts]: Start accepts. Automaton has 166539 states and 217971 transitions. Word has length 105 [2019-09-10 08:09:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:09:17,429 INFO L475 AbstractCegarLoop]: Abstraction has 166539 states and 217971 transitions. [2019-09-10 08:09:17,429 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 08:09:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 166539 states and 217971 transitions. [2019-09-10 08:09:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-10 08:09:17,432 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:09:17,432 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:09:17,432 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:09:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash -287303182, now seen corresponding path program 1 times [2019-09-10 08:09:17,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:09:17,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:17,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:17,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:17,434 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:09:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-10 08:09:17,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:09:17,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:09:17,485 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:09:17,486 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:09:17,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:09:17,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:09:17,487 INFO L87 Difference]: Start difference. First operand 166539 states and 217971 transitions. Second operand 3 states. [2019-09-10 08:09:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:09:17,753 INFO L93 Difference]: Finished difference Result 135073 states and 175698 transitions. [2019-09-10 08:09:17,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:09:17,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-09-10 08:09:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:09:17,870 INFO L225 Difference]: With dead ends: 135073 [2019-09-10 08:09:17,870 INFO L226 Difference]: Without dead ends: 135073 [2019-09-10 08:09:17,871 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 [2019-09-10 08:09:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135073 states. [2019-09-10 08:09:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135073 to 135073. [2019-09-10 08:09:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135073 states. [2019-09-10 08:09:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135073 states to 135073 states and 175698 transitions. [2019-09-10 08:09:19,751 INFO L78 Accepts]: Start accepts. Automaton has 135073 states and 175698 transitions. Word has length 106 [2019-09-10 08:09:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:09:19,751 INFO L475 AbstractCegarLoop]: Abstraction has 135073 states and 175698 transitions. [2019-09-10 08:09:19,751 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:09:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 135073 states and 175698 transitions. [2019-09-10 08:09:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-10 08:09:19,753 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:09:19,753 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:09:19,753 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:09:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash 521689820, now seen corresponding path program 1 times [2019-09-10 08:09:19,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:09:19,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:19,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:19,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:19,755 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:09:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-10 08:09:19,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 08:09:19,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 08:09:19,789 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 08:09:19,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 08:09:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 08:09:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 08:09:19,790 INFO L87 Difference]: Start difference. First operand 135073 states and 175698 transitions. Second operand 3 states. [2019-09-10 08:09:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:09:20,105 INFO L93 Difference]: Finished difference Result 105583 states and 136794 transitions. [2019-09-10 08:09:20,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 08:09:20,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-09-10 08:09:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:09:20,245 INFO L225 Difference]: With dead ends: 105583 [2019-09-10 08:09:20,245 INFO L226 Difference]: Without dead ends: 105583 [2019-09-10 08:09:20,246 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 [2019-09-10 08:09:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105583 states. [2019-09-10 08:09:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105583 to 105583. [2019-09-10 08:09:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105583 states. [2019-09-10 08:09:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105583 states to 105583 states and 136794 transitions. [2019-09-10 08:09:21,828 INFO L78 Accepts]: Start accepts. Automaton has 105583 states and 136794 transitions. Word has length 106 [2019-09-10 08:09:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:09:21,828 INFO L475 AbstractCegarLoop]: Abstraction has 105583 states and 136794 transitions. [2019-09-10 08:09:21,828 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 08:09:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 105583 states and 136794 transitions. [2019-09-10 08:09:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-10 08:09:21,832 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:09:21,832 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:09:21,832 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:09:21,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:21,832 INFO L82 PathProgramCache]: Analyzing trace with hash 687250266, now seen corresponding path program 1 times [2019-09-10 08:09:21,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:09:21,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:21,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:21,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:21,833 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:09:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:21,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:09:21,952 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:09:21,952 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2019-09-10 08:09:21,952 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [138], [140], [142], [145], [148], [153], [155], [158], [161], [164], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [200], [213], [216], [219], [221], [229], [232], [238], [241], [244], [246], [263], [266], [269], [271], [288], [291], [294], [296], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:09:21,955 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:09:21,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:09:21,970 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:09:22,444 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:09:22,444 INFO L272 AbstractInterpreter]: Visited 96 different actions 975 times. Merged at 58 different actions 780 times. Widened at 20 different actions 138 times. Performed 3193 root evaluator evaluations with a maximum evaluation depth of 7. Performed 3193 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 94 fixpoints after 22 different actions. Largest state had 131 variables. [2019-09-10 08:09:22,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:22,445 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:09:22,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:09:22,445 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:09:22,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:22,466 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:09:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:22,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 08:09:22,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:09:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:22,728 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:09:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:22,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:09:22,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-09-10 08:09:22,805 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:09:22,805 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 08:09:22,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 08:09:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-10 08:09:22,806 INFO L87 Difference]: Start difference. First operand 105583 states and 136794 transitions. Second operand 11 states. [2019-09-10 08:09:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:09:23,252 INFO L93 Difference]: Finished difference Result 96863 states and 124370 transitions. [2019-09-10 08:09:23,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 08:09:23,253 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 137 [2019-09-10 08:09:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:09:23,344 INFO L225 Difference]: With dead ends: 96863 [2019-09-10 08:09:23,344 INFO L226 Difference]: Without dead ends: 96863 [2019-09-10 08:09:23,345 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 266 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-09-10 08:09:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96863 states. [2019-09-10 08:09:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96863 to 88723. [2019-09-10 08:09:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88723 states. [2019-09-10 08:09:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88723 states to 88723 states and 114444 transitions. [2019-09-10 08:09:24,727 INFO L78 Accepts]: Start accepts. Automaton has 88723 states and 114444 transitions. Word has length 137 [2019-09-10 08:09:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:09:24,727 INFO L475 AbstractCegarLoop]: Abstraction has 88723 states and 114444 transitions. [2019-09-10 08:09:24,727 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 08:09:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 88723 states and 114444 transitions. [2019-09-10 08:09:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-09-10 08:09:24,739 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:09:24,739 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:09:24,740 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:09:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1802683877, now seen corresponding path program 1 times [2019-09-10 08:09:24,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:09:24,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:24,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:24,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:09:24,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:09:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:25,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:09:25,056 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:09:25,056 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 167 with the following transitions: [2019-09-10 08:09:25,056 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [138], [140], [142], [145], [148], [151], [153], [155], [158], [161], [164], [166], [168], [171], [174], [178], [180], [183], [184], [186], [188], [193], [195], [198], [211], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [311], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:09:25,058 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:09:25,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:09:25,073 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:09:25,947 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:09:25,947 INFO L272 AbstractInterpreter]: Visited 102 different actions 1486 times. Merged at 63 different actions 1114 times. Widened at 26 different actions 246 times. Performed 4760 root evaluator evaluations with a maximum evaluation depth of 7. Performed 4760 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 246 fixpoints after 27 different actions. Largest state had 131 variables. [2019-09-10 08:09:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:09:25,948 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:09:25,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:09:25,948 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) [2019-09-10 08:09:25,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:09:25,971 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 08:09:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:09:26,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 08:09:26,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:09:26,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:26,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 59 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:26,887 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:09:27,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:27,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:28,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:28,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:29,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:09:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:09:30,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:09:30,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2019-09-10 08:09:30,032 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:09:30,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-10 08:09:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-10 08:09:30,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2019-09-10 08:09:30,033 INFO L87 Difference]: Start difference. First operand 88723 states and 114444 transitions. Second operand 21 states. [2019-09-10 08:09:30,405 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-10 08:09:30,933 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 08:09:31,472 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-10 08:09:31,744 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 08:09:32,462 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-10 08:09:32,943 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 08:09:33,269 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 08:09:33,970 WARN L188 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-10 08:09:34,256 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-10 08:09:34,994 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2019-09-10 08:09:35,496 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2019-09-10 08:09:35,904 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-10 08:09:36,681 WARN L188 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 08:09:37,295 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2019-09-10 08:09:37,619 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 08:09:38,256 WARN L188 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-10 08:09:38,602 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 08:09:39,001 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-10 08:09:39,346 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:09:39,765 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:09:40,121 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:09:40,533 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:09:40,984 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2019-09-10 08:09:41,581 WARN L188 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2019-09-10 08:09:42,044 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-09-10 08:09:42,458 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:09:43,628 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-09-10 08:09:44,062 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-10 08:09:44,444 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 08:09:45,142 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-10 08:09:45,449 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 08:09:45,968 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:09:46,683 WARN L188 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2019-09-10 08:09:47,140 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:09:47,638 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 08:09:48,640 WARN L188 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:09:49,019 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-09-10 08:09:49,503 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-09-10 08:09:50,181 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:09:50,546 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2019-09-10 08:09:51,000 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 08:09:51,579 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-10 08:09:51,921 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-10 08:09:52,639 WARN L188 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2019-09-10 08:09:53,166 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:09:54,438 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-10 08:09:55,066 WARN L188 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 08:09:55,657 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2019-09-10 08:09:56,187 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 08:09:56,911 WARN L188 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-10 08:09:57,929 WARN L188 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 89 [2019-09-10 08:09:58,474 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2019-09-10 08:09:58,931 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2019-09-10 08:09:59,625 WARN L188 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-09-10 08:10:00,736 WARN L188 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:10:01,392 WARN L188 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2019-09-10 08:10:01,908 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2019-09-10 08:10:02,620 WARN L188 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2019-09-10 08:10:03,104 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2019-09-10 08:10:04,957 WARN L188 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2019-09-10 08:10:05,881 WARN L188 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-10 08:10:06,430 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 08:10:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 08:10:06,460 INFO L93 Difference]: Finished difference Result 146725 states and 183478 transitions. [2019-09-10 08:10:06,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-09-10 08:10:06,461 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 166 [2019-09-10 08:10:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 08:10:06,585 INFO L225 Difference]: With dead ends: 146725 [2019-09-10 08:10:06,585 INFO L226 Difference]: Without dead ends: 146725 [2019-09-10 08:10:06,585 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=2248, Invalid=6872, Unknown=0, NotChecked=0, Total=9120 [2019-09-10 08:10:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146725 states. [2019-09-10 08:10:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146725 to 64929. [2019-09-10 08:10:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64929 states. [2019-09-10 08:10:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64929 states to 64929 states and 82560 transitions. [2019-09-10 08:10:08,010 INFO L78 Accepts]: Start accepts. Automaton has 64929 states and 82560 transitions. Word has length 166 [2019-09-10 08:10:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 08:10:08,010 INFO L475 AbstractCegarLoop]: Abstraction has 64929 states and 82560 transitions. [2019-09-10 08:10:08,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-10 08:10:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 64929 states and 82560 transitions. [2019-09-10 08:10:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-09-10 08:10:08,019 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 08:10:08,020 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 08:10:08,020 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 08:10:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:10:08,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1919511843, now seen corresponding path program 1 times [2019-09-10 08:10:08,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 08:10:08,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:10:08,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:10:08,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 08:10:08,022 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 08:10:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:10:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 30 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:10:08,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:10:08,351 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 08:10:08,352 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2019-09-10 08:10:08,352 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [75], [78], [81], [84], [87], [90], [93], [96], [98], [101], [106], [109], [112], [114], [116], [119], [122], [125], [127], [129], [132], [135], [138], [140], [142], [145], [148], [151], [153], [155], [158], [161], [164], [166], [168], [171], [178], [180], [183], [184], [186], [195], [198], [202], [204], [207], [213], [216], [219], [221], [236], [238], [241], [244], [246], [261], [263], [266], [269], [271], [286], [288], [291], [294], [296], [304], [307], [313], [315], [318], [321], [323], [364], [365], [369], [370], [371] [2019-09-10 08:10:08,356 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 08:10:08,356 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 08:10:08,371 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 08:10:08,912 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 08:10:08,913 INFO L272 AbstractInterpreter]: Visited 102 different actions 1408 times. Merged at 64 different actions 1068 times. Widened at 25 different actions 238 times. Performed 4497 root evaluator evaluations with a maximum evaluation depth of 5. Performed 4497 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 209 fixpoints after 24 different actions. Largest state had 131 variables. [2019-09-10 08:10:08,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 08:10:08,913 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 08:10:08,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 08:10:08,913 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-09-10 08:10:08,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 08:10:08,925 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 08:10:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 08:10:09,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-10 08:10:09,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 08:10:09,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:10:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 40 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:10:09,622 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 08:10:09,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:10:10,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:10:10,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:10:10,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:10:10,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:10:14,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 08:10:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 38 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 08:10:14,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 08:10:14,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2019-09-10 08:10:14,405 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 08:10:14,405 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-10 08:10:14,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-10 08:10:14,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2019-09-10 08:10:14,406 INFO L87 Difference]: Start difference. First operand 64929 states and 82560 transitions. Second operand 21 states. [2019-09-10 08:10:16,531 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-10 08:10:17,071 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-10 08:10:17,220 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-10 08:10:17,374 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-09-10 08:10:18,500 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:10:18,703 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-10 08:10:19,280 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 08:10:19,527 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 08:10:19,794 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 08:10:20,362 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:10:20,548 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 08:10:20,903 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2019-09-10 08:10:21,103 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-10 08:10:21,835 WARN L188 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:10:22,050 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 08:10:22,243 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 08:10:23,329 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-10 08:10:23,542 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 08:10:23,740 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 08:10:24,796 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62