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-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 03:01:07,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 03:01:07,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 03:01:07,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 03:01:07,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 03:01:07,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 03:01:07,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 03:01:07,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 03:01:07,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 03:01:07,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 03:01:07,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 03:01:07,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 03:01:07,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 03:01:07,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 03:01:07,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 03:01:07,443 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 [2019-10-03 03:01:07,459 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 03:01:07,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 03:01:07,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 03:01:07,460 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 03:01:07,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 03:01:07,461 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 03:01:07,461 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 03:01:07,461 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 03:01:07,461 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 03:01:07,462 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 03:01:07,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 03:01:07,462 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 03:01:07,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 03:01:07,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 03:01:07,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 03:01:07,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 03:01:07,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 03:01:07,464 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 03:01:07,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 03:01:07,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 03:01:07,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 03:01:07,465 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 03:01:07,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 03:01:07,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 03:01:07,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 03:01:07,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 03:01:07,465 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 03:01:07,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 03:01:07,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 03:01:07,466 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 03:01:07,505 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 03:01:07,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 03:01:07,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 03:01:07,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 03:01:07,522 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 03:01:07,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-10-03 03:01:07,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073702687/b0d048c2aa2a4e40ae1f45bd2261b54f/FLAGfa82c714a [2019-10-03 03:01:08,045 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 03:01:08,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-10-03 03:01:08,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073702687/b0d048c2aa2a4e40ae1f45bd2261b54f/FLAGfa82c714a [2019-10-03 03:01:08,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073702687/b0d048c2aa2a4e40ae1f45bd2261b54f [2019-10-03 03:01:08,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 03:01:08,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 03:01:08,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 03:01:08,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 03:01:08,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 03:01:08,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 03:01:08" (1/1) ... [2019-10-03 03:01:08,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1431bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:08, skipping insertion in model container [2019-10-03 03:01:08,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 03:01:08" (1/1) ... [2019-10-03 03:01:08,468 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 03:01:08,521 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 03:01:08,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 03:01:08,806 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 03:01:08,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 03:01:09,002 INFO L192 MainTranslator]: Completed translation [2019-10-03 03:01:09,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09 WrapperNode [2019-10-03 03:01:09,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 03:01:09,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 03:01:09,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 03:01:09,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 03:01:09,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... [2019-10-03 03:01:09,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... [2019-10-03 03:01:09,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... [2019-10-03 03:01:09,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... [2019-10-03 03:01:09,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... [2019-10-03 03:01:09,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... [2019-10-03 03:01:09,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... [2019-10-03 03:01:09,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 03:01:09,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 03:01:09,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 03:01:09,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 03:01:09,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 03:01:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 03:01:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 03:01:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 03:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 03:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-03 03:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-03 03:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-03 03:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-03 03:01:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-03 03:01:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-03 03:01:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-03 03:01:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-03 03:01:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-03 03:01:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-03 03:01:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-03 03:01:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-03 03:01:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 03:01:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 03:01:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 03:01:09,732 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 03:01:09,733 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 03:01:09,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:01:09 BoogieIcfgContainer [2019-10-03 03:01:09,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 03:01:09,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 03:01:09,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 03:01:09,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 03:01:09,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 03:01:08" (1/3) ... [2019-10-03 03:01:09,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d60a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:01:09, skipping insertion in model container [2019-10-03 03:01:09,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 03:01:09" (2/3) ... [2019-10-03 03:01:09,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d60a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 03:01:09, skipping insertion in model container [2019-10-03 03:01:09,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 03:01:09" (3/3) ... [2019-10-03 03:01:09,741 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-10-03 03:01:09,751 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 03:01:09,759 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 03:01:09,777 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 03:01:09,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 03:01:09,806 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 03:01:09,806 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 03:01:09,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 03:01:09,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 03:01:09,807 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 03:01:09,807 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 03:01:09,807 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 03:01:09,826 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-10-03 03:01:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-03 03:01:09,838 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:09,840 INFO L411 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] [2019-10-03 03:01:09,842 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:09,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1555775493, now seen corresponding path program 1 times [2019-10-03 03:01:09,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:09,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:09,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:09,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:09,909 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:10,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:10,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:01:10,223 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:10,230 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:01:10,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:01:10,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:01:10,250 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2019-10-03 03:01:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:10,345 INFO L93 Difference]: Finished difference Result 134 states and 207 transitions. [2019-10-03 03:01:10,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:01:10,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-10-03 03:01:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:10,373 INFO L225 Difference]: With dead ends: 134 [2019-10-03 03:01:10,373 INFO L226 Difference]: Without dead ends: 126 [2019-10-03 03:01:10,376 INFO L640 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 [2019-10-03 03:01:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-03 03:01:10,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2019-10-03 03:01:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-03 03:01:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2019-10-03 03:01:10,462 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 41 [2019-10-03 03:01:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:10,463 INFO L475 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2019-10-03 03:01:10,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:01:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2019-10-03 03:01:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-03 03:01:10,468 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:10,468 INFO L411 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] [2019-10-03 03:01:10,468 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:10,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:10,470 INFO L82 PathProgramCache]: Analyzing trace with hash 477079428, now seen corresponding path program 1 times [2019-10-03 03:01:10,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:10,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:10,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:10,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:10,477 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:10,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:10,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:01:10,626 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:10,629 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:01:10,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:01:10,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:01:10,634 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand 3 states. [2019-10-03 03:01:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:10,681 INFO L93 Difference]: Finished difference Result 192 states and 286 transitions. [2019-10-03 03:01:10,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:01:10,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-10-03 03:01:10,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:10,684 INFO L225 Difference]: With dead ends: 192 [2019-10-03 03:01:10,684 INFO L226 Difference]: Without dead ends: 192 [2019-10-03 03:01:10,685 INFO L640 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 [2019-10-03 03:01:10,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-10-03 03:01:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2019-10-03 03:01:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-10-03 03:01:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 285 transitions. [2019-10-03 03:01:10,704 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 285 transitions. Word has length 42 [2019-10-03 03:01:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:10,705 INFO L475 AbstractCegarLoop]: Abstraction has 190 states and 285 transitions. [2019-10-03 03:01:10,705 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:01:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 285 transitions. [2019-10-03 03:01:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-03 03:01:10,707 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:10,707 INFO L411 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] [2019-10-03 03:01:10,708 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1738555772, now seen corresponding path program 1 times [2019-10-03 03:01:10,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:10,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:10,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:10,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:10,711 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:10,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:10,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 03:01:10,903 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:10,904 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 03:01:10,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 03:01:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:01:10,906 INFO L87 Difference]: Start difference. First operand 190 states and 285 transitions. Second operand 5 states. [2019-10-03 03:01:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:11,037 INFO L93 Difference]: Finished difference Result 688 states and 1060 transitions. [2019-10-03 03:01:11,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:01:11,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-03 03:01:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:11,044 INFO L225 Difference]: With dead ends: 688 [2019-10-03 03:01:11,045 INFO L226 Difference]: Without dead ends: 688 [2019-10-03 03:01:11,045 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-03 03:01:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2019-10-03 03:01:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 354. [2019-10-03 03:01:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-10-03 03:01:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 537 transitions. [2019-10-03 03:01:11,078 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 537 transitions. Word has length 43 [2019-10-03 03:01:11,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:11,079 INFO L475 AbstractCegarLoop]: Abstraction has 354 states and 537 transitions. [2019-10-03 03:01:11,079 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 03:01:11,079 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 537 transitions. [2019-10-03 03:01:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-03 03:01:11,081 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:11,081 INFO L411 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] [2019-10-03 03:01:11,081 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:11,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1920813121, now seen corresponding path program 1 times [2019-10-03 03:01:11,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:11,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:11,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:11,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:11,084 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:11,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:11,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 03:01:11,237 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:11,237 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 03:01:11,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 03:01:11,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:01:11,238 INFO L87 Difference]: Start difference. First operand 354 states and 537 transitions. Second operand 5 states. [2019-10-03 03:01:11,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:11,332 INFO L93 Difference]: Finished difference Result 902 states and 1371 transitions. [2019-10-03 03:01:11,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:01:11,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-10-03 03:01:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:11,344 INFO L225 Difference]: With dead ends: 902 [2019-10-03 03:01:11,344 INFO L226 Difference]: Without dead ends: 902 [2019-10-03 03:01:11,345 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:01:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-03 03:01:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 898. [2019-10-03 03:01:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2019-10-03 03:01:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1369 transitions. [2019-10-03 03:01:11,399 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1369 transitions. Word has length 44 [2019-10-03 03:01:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:11,400 INFO L475 AbstractCegarLoop]: Abstraction has 898 states and 1369 transitions. [2019-10-03 03:01:11,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 03:01:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1369 transitions. [2019-10-03 03:01:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-03 03:01:11,411 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:11,411 INFO L411 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] [2019-10-03 03:01:11,412 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1112409250, now seen corresponding path program 1 times [2019-10-03 03:01:11,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:11,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:11,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:11,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:11,417 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:11,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:11,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:01:11,484 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:11,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:01:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:01:11,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:01:11,486 INFO L87 Difference]: Start difference. First operand 898 states and 1369 transitions. Second operand 3 states. [2019-10-03 03:01:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:11,516 INFO L93 Difference]: Finished difference Result 1460 states and 2186 transitions. [2019-10-03 03:01:11,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:01:11,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-03 03:01:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:11,527 INFO L225 Difference]: With dead ends: 1460 [2019-10-03 03:01:11,527 INFO L226 Difference]: Without dead ends: 1460 [2019-10-03 03:01:11,528 INFO L640 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 [2019-10-03 03:01:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2019-10-03 03:01:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1458. [2019-10-03 03:01:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2019-10-03 03:01:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2185 transitions. [2019-10-03 03:01:11,571 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2185 transitions. Word has length 46 [2019-10-03 03:01:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:11,571 INFO L475 AbstractCegarLoop]: Abstraction has 1458 states and 2185 transitions. [2019-10-03 03:01:11,572 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:01:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2185 transitions. [2019-10-03 03:01:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-03 03:01:11,575 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:11,575 INFO L411 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] [2019-10-03 03:01:11,575 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:11,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:11,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1926406488, now seen corresponding path program 1 times [2019-10-03 03:01:11,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:11,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:11,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:11,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:11,583 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:11,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:11,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-03 03:01:11,737 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:11,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-03 03:01:11,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-03 03:01:11,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-03 03:01:11,740 INFO L87 Difference]: Start difference. First operand 1458 states and 2185 transitions. Second operand 6 states. [2019-10-03 03:01:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:12,004 INFO L93 Difference]: Finished difference Result 4214 states and 6283 transitions. [2019-10-03 03:01:12,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:01:12,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2019-10-03 03:01:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:12,025 INFO L225 Difference]: With dead ends: 4214 [2019-10-03 03:01:12,025 INFO L226 Difference]: Without dead ends: 4214 [2019-10-03 03:01:12,026 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-10-03 03:01:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2019-10-03 03:01:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4210. [2019-10-03 03:01:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2019-10-03 03:01:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6281 transitions. [2019-10-03 03:01:12,145 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6281 transitions. Word has length 46 [2019-10-03 03:01:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:12,148 INFO L475 AbstractCegarLoop]: Abstraction has 4210 states and 6281 transitions. [2019-10-03 03:01:12,148 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-03 03:01:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6281 transitions. [2019-10-03 03:01:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-03 03:01:12,153 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:12,154 INFO L411 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] [2019-10-03 03:01:12,154 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:12,160 INFO L82 PathProgramCache]: Analyzing trace with hash -742396141, now seen corresponding path program 1 times [2019-10-03 03:01:12,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:12,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:12,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:12,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:12,164 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:12,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:12,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 03:01:12,282 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:12,283 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 03:01:12,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 03:01:12,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:01:12,284 INFO L87 Difference]: Start difference. First operand 4210 states and 6281 transitions. Second operand 5 states. [2019-10-03 03:01:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:12,447 INFO L93 Difference]: Finished difference Result 8682 states and 12681 transitions. [2019-10-03 03:01:12,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 03:01:12,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-10-03 03:01:12,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:12,504 INFO L225 Difference]: With dead ends: 8682 [2019-10-03 03:01:12,504 INFO L226 Difference]: Without dead ends: 8682 [2019-10-03 03:01:12,506 INFO L640 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 [2019-10-03 03:01:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2019-10-03 03:01:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 4498. [2019-10-03 03:01:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2019-10-03 03:01:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 6569 transitions. [2019-10-03 03:01:12,729 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 6569 transitions. Word has length 46 [2019-10-03 03:01:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:12,730 INFO L475 AbstractCegarLoop]: Abstraction has 4498 states and 6569 transitions. [2019-10-03 03:01:12,730 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 03:01:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 6569 transitions. [2019-10-03 03:01:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-03 03:01:12,731 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:12,732 INFO L411 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] [2019-10-03 03:01:12,733 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:12,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1529824191, now seen corresponding path program 1 times [2019-10-03 03:01:12,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:12,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:12,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:12,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:12,737 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:12,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:12,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:01:12,800 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:12,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:01:12,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:01:12,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:01:12,802 INFO L87 Difference]: Start difference. First operand 4498 states and 6569 transitions. Second operand 3 states. [2019-10-03 03:01:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:12,871 INFO L93 Difference]: Finished difference Result 6340 states and 9118 transitions. [2019-10-03 03:01:12,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:01:12,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-03 03:01:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:12,907 INFO L225 Difference]: With dead ends: 6340 [2019-10-03 03:01:12,907 INFO L226 Difference]: Without dead ends: 6340 [2019-10-03 03:01:12,908 INFO L640 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 [2019-10-03 03:01:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2019-10-03 03:01:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 6278. [2019-10-03 03:01:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2019-10-03 03:01:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9057 transitions. [2019-10-03 03:01:13,086 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9057 transitions. Word has length 47 [2019-10-03 03:01:13,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:13,086 INFO L475 AbstractCegarLoop]: Abstraction has 6278 states and 9057 transitions. [2019-10-03 03:01:13,086 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:01:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9057 transitions. [2019-10-03 03:01:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-03 03:01:13,089 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:13,090 INFO L411 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] [2019-10-03 03:01:13,090 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1418257868, now seen corresponding path program 1 times [2019-10-03 03:01:13,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:13,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:13,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:13,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:13,093 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:13,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:01:13,182 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:01:13,183 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-10-03 03:01:13,185 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [77], [80], [83], [86], [91], [93], [96], [107], [109], [112], [115], [117], [120], [121], [123], [132], [143], [145], [158], [166], [185], [187], [190], [198], [201], [204], [207], [209], [211], [253], [266], [274], [295], [296], [300], [301], [302] [2019-10-03 03:01:13,228 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:01:13,229 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:01:13,334 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:01:13,492 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 03:01:13,495 INFO L272 AbstractInterpreter]: Visited 52 different actions 90 times. Merged at 25 different actions 32 times. Never widened. Performed 377 root evaluator evaluations with a maximum evaluation depth of 5. Performed 377 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 3 fixpoints after 2 different actions. Largest state had 94 variables. [2019-10-03 03:01:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:13,500 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 03:01:13,729 INFO L227 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 83.19% of their original sizes. [2019-10-03 03:01:13,729 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 03:01:15,148 INFO L420 sIntCurrentIteration]: We unified 64 AI predicates to 64 [2019-10-03 03:01:15,149 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 03:01:15,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 03:01:15,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [36] imperfect sequences [7] total 41 [2019-10-03 03:01:15,150 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:15,150 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-03 03:01:15,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-03 03:01:15,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2019-10-03 03:01:15,152 INFO L87 Difference]: Start difference. First operand 6278 states and 9057 transitions. Second operand 36 states. [2019-10-03 03:01:36,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:36,452 INFO L93 Difference]: Finished difference Result 19986 states and 27924 transitions. [2019-10-03 03:01:36,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2019-10-03 03:01:36,452 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 65 [2019-10-03 03:01:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:36,509 INFO L225 Difference]: With dead ends: 19986 [2019-10-03 03:01:36,509 INFO L226 Difference]: Without dead ends: 19986 [2019-10-03 03:01:36,524 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21986 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=6908, Invalid=43942, Unknown=0, NotChecked=0, Total=50850 [2019-10-03 03:01:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19986 states. [2019-10-03 03:01:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19986 to 9849. [2019-10-03 03:01:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9849 states. [2019-10-03 03:01:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9849 states to 9849 states and 13963 transitions. [2019-10-03 03:01:36,904 INFO L78 Accepts]: Start accepts. Automaton has 9849 states and 13963 transitions. Word has length 65 [2019-10-03 03:01:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:36,905 INFO L475 AbstractCegarLoop]: Abstraction has 9849 states and 13963 transitions. [2019-10-03 03:01:36,905 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-03 03:01:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9849 states and 13963 transitions. [2019-10-03 03:01:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-03 03:01:36,909 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:36,913 INFO L411 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] [2019-10-03 03:01:36,913 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:36,914 INFO L82 PathProgramCache]: Analyzing trace with hash 929561592, now seen corresponding path program 1 times [2019-10-03 03:01:36,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:36,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:36,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:36,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:36,921 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:36,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:36,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:01:36,991 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:36,992 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:01:36,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:01:36,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:01:36,993 INFO L87 Difference]: Start difference. First operand 9849 states and 13963 transitions. Second operand 3 states. [2019-10-03 03:01:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:37,038 INFO L93 Difference]: Finished difference Result 12267 states and 17017 transitions. [2019-10-03 03:01:37,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:01:37,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-10-03 03:01:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:37,065 INFO L225 Difference]: With dead ends: 12267 [2019-10-03 03:01:37,066 INFO L226 Difference]: Without dead ends: 12267 [2019-10-03 03:01:37,067 INFO L640 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 [2019-10-03 03:01:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12267 states. [2019-10-03 03:01:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12267 to 11384. [2019-10-03 03:01:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11384 states. [2019-10-03 03:01:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11384 states to 11384 states and 15890 transitions. [2019-10-03 03:01:37,256 INFO L78 Accepts]: Start accepts. Automaton has 11384 states and 15890 transitions. Word has length 65 [2019-10-03 03:01:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:37,257 INFO L475 AbstractCegarLoop]: Abstraction has 11384 states and 15890 transitions. [2019-10-03 03:01:37,257 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:01:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 11384 states and 15890 transitions. [2019-10-03 03:01:37,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-03 03:01:37,261 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:37,261 INFO L411 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] [2019-10-03 03:01:37,262 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:37,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:37,262 INFO L82 PathProgramCache]: Analyzing trace with hash 442725761, now seen corresponding path program 1 times [2019-10-03 03:01:37,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:37,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:37,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:37,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:37,265 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:37,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:01:37,363 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:01:37,364 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-10-03 03:01:37,364 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [77], [80], [91], [93], [96], [99], [102], [107], [109], [112], [115], [117], [120], [121], [123], [132], [134], [137], [145], [148], [151], [154], [156], [158], [196], [198], [211], [219], [238], [253], [266], [274], [295], [296], [300], [301], [302] [2019-10-03 03:01:37,374 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:01:37,375 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:01:37,398 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:01:37,439 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 03:01:37,439 INFO L272 AbstractInterpreter]: Visited 52 different actions 108 times. Merged at 25 different actions 48 times. Never widened. Performed 409 root evaluator evaluations with a maximum evaluation depth of 5. Performed 409 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 3 fixpoints after 2 different actions. Largest state had 94 variables. [2019-10-03 03:01:37,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:37,440 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 03:01:37,501 INFO L227 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 83.41% of their original sizes. [2019-10-03 03:01:37,501 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 03:01:38,696 INFO L420 sIntCurrentIteration]: We unified 64 AI predicates to 64 [2019-10-03 03:01:38,697 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 03:01:38,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 03:01:38,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [36] imperfect sequences [7] total 41 [2019-10-03 03:01:38,698 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:38,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-03 03:01:38,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-03 03:01:38,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1093, Unknown=0, NotChecked=0, Total=1260 [2019-10-03 03:01:38,702 INFO L87 Difference]: Start difference. First operand 11384 states and 15890 transitions. Second operand 36 states. [2019-10-03 03:01:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:54,233 INFO L93 Difference]: Finished difference Result 27125 states and 37181 transitions. [2019-10-03 03:01:54,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2019-10-03 03:01:54,233 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 65 [2019-10-03 03:01:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:54,301 INFO L225 Difference]: With dead ends: 27125 [2019-10-03 03:01:54,302 INFO L226 Difference]: Without dead ends: 27125 [2019-10-03 03:01:54,311 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16581 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5358, Invalid=34044, Unknown=0, NotChecked=0, Total=39402 [2019-10-03 03:01:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27125 states. [2019-10-03 03:01:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27125 to 13606. [2019-10-03 03:01:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13606 states. [2019-10-03 03:01:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13606 states to 13606 states and 18843 transitions. [2019-10-03 03:01:54,739 INFO L78 Accepts]: Start accepts. Automaton has 13606 states and 18843 transitions. Word has length 65 [2019-10-03 03:01:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:54,739 INFO L475 AbstractCegarLoop]: Abstraction has 13606 states and 18843 transitions. [2019-10-03 03:01:54,739 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-03 03:01:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13606 states and 18843 transitions. [2019-10-03 03:01:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-03 03:01:54,747 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:54,748 INFO L411 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] [2019-10-03 03:01:54,748 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1397076685, now seen corresponding path program 1 times [2019-10-03 03:01:54,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:54,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:54,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:54,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:54,751 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:54,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:01:54,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:01:54,797 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:01:54,797 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:01:54,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:01:54,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:01:54,798 INFO L87 Difference]: Start difference. First operand 13606 states and 18843 transitions. Second operand 3 states. [2019-10-03 03:01:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:01:54,856 INFO L93 Difference]: Finished difference Result 18671 states and 25421 transitions. [2019-10-03 03:01:54,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:01:54,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-10-03 03:01:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:01:54,894 INFO L225 Difference]: With dead ends: 18671 [2019-10-03 03:01:54,894 INFO L226 Difference]: Without dead ends: 18671 [2019-10-03 03:01:54,894 INFO L640 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 [2019-10-03 03:01:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18671 states. [2019-10-03 03:01:55,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18671 to 18203. [2019-10-03 03:01:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18203 states. [2019-10-03 03:01:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18203 states to 18203 states and 24855 transitions. [2019-10-03 03:01:55,191 INFO L78 Accepts]: Start accepts. Automaton has 18203 states and 24855 transitions. Word has length 66 [2019-10-03 03:01:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:01:55,192 INFO L475 AbstractCegarLoop]: Abstraction has 18203 states and 24855 transitions. [2019-10-03 03:01:55,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:01:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 18203 states and 24855 transitions. [2019-10-03 03:01:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-03 03:01:55,203 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:01:55,204 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-03 03:01:55,204 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:01:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2075170094, now seen corresponding path program 1 times [2019-10-03 03:01:55,205 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:01:55,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:55,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:55,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:01:55,209 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:01:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:01:55,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:01:55,564 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:01:55,565 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-10-03 03:01:55,565 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [75], [77], [80], [91], [93], [96], [107], [109], [112], [115], [117], [120], [121], [123], [125], [130], [143], [145], [158], [166], [185], [196], [198], [201], [204], [207], [209], [211], [249], [251], [253], [266], [274], [295], [296], [300], [301], [302] [2019-10-03 03:01:55,578 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:01:55,578 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:01:55,587 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:01:55,760 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:01:55,761 INFO L272 AbstractInterpreter]: Visited 60 different actions 309 times. Merged at 36 different actions 219 times. Widened at 13 different actions 28 times. Performed 997 root evaluator evaluations with a maximum evaluation depth of 5. Performed 997 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 34 fixpoints after 12 different actions. Largest state had 94 variables. [2019-10-03 03:01:55,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:01:55,763 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:01:55,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:01:55,763 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 03:01:55,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:01:55,835 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:01:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:01:55,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-03 03:01:55,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:01:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-03 03:01:56,047 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:01:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-03 03:01:56,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:01:56,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 14 [2019-10-03 03:01:56,134 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:01:56,134 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-03 03:01:56,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-03 03:01:56,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-03 03:01:56,135 INFO L87 Difference]: Start difference. First operand 18203 states and 24855 transitions. Second operand 12 states. [2019-10-03 03:02:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:02:04,703 INFO L93 Difference]: Finished difference Result 116631 states and 154959 transitions. [2019-10-03 03:02:04,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2019-10-03 03:02:04,703 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2019-10-03 03:02:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:02:04,900 INFO L225 Difference]: With dead ends: 116631 [2019-10-03 03:02:04,901 INFO L226 Difference]: Without dead ends: 116631 [2019-10-03 03:02:04,902 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7696 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2808, Invalid=15552, Unknown=0, NotChecked=0, Total=18360 [2019-10-03 03:02:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116631 states. [2019-10-03 03:02:05,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116631 to 37999. [2019-10-03 03:02:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37999 states. [2019-10-03 03:02:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37999 states to 37999 states and 51240 transitions. [2019-10-03 03:02:05,763 INFO L78 Accepts]: Start accepts. Automaton has 37999 states and 51240 transitions. Word has length 66 [2019-10-03 03:02:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:02:05,763 INFO L475 AbstractCegarLoop]: Abstraction has 37999 states and 51240 transitions. [2019-10-03 03:02:05,763 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-03 03:02:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 37999 states and 51240 transitions. [2019-10-03 03:02:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-03 03:02:05,769 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:02:05,770 INFO L411 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] [2019-10-03 03:02:05,770 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:02:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:05,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2028493329, now seen corresponding path program 1 times [2019-10-03 03:02:05,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:02:05,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:05,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:02:05,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:05,773 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:02:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:02:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-03 03:02:05,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:02:05,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 03:02:05,843 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:02:05,844 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 03:02:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 03:02:05,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:02:05,845 INFO L87 Difference]: Start difference. First operand 37999 states and 51240 transitions. Second operand 5 states. [2019-10-03 03:02:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:02:05,988 INFO L93 Difference]: Finished difference Result 49859 states and 67421 transitions. [2019-10-03 03:02:05,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:02:05,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-10-03 03:02:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:02:06,058 INFO L225 Difference]: With dead ends: 49859 [2019-10-03 03:02:06,059 INFO L226 Difference]: Without dead ends: 49859 [2019-10-03 03:02:06,059 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-03 03:02:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49859 states. [2019-10-03 03:02:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49859 to 45187. [2019-10-03 03:02:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45187 states. [2019-10-03 03:02:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45187 states to 45187 states and 60900 transitions. [2019-10-03 03:02:07,446 INFO L78 Accepts]: Start accepts. Automaton has 45187 states and 60900 transitions. Word has length 67 [2019-10-03 03:02:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:02:07,447 INFO L475 AbstractCegarLoop]: Abstraction has 45187 states and 60900 transitions. [2019-10-03 03:02:07,447 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 03:02:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 45187 states and 60900 transitions. [2019-10-03 03:02:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-03 03:02:07,453 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:02:07,453 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:02:07,453 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:02:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:07,454 INFO L82 PathProgramCache]: Analyzing trace with hash 464290294, now seen corresponding path program 1 times [2019-10-03 03:02:07,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:02:07,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:07,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:02:07,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:07,456 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:02:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:02:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:02:07,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:02:07,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:02:07,498 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:02:07,499 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:02:07,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:02:07,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:02:07,499 INFO L87 Difference]: Start difference. First operand 45187 states and 60900 transitions. Second operand 3 states. [2019-10-03 03:02:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:02:07,609 INFO L93 Difference]: Finished difference Result 42559 states and 56661 transitions. [2019-10-03 03:02:07,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:02:07,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-03 03:02:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:02:07,652 INFO L225 Difference]: With dead ends: 42559 [2019-10-03 03:02:07,652 INFO L226 Difference]: Without dead ends: 42559 [2019-10-03 03:02:07,652 INFO L640 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 [2019-10-03 03:02:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42559 states. [2019-10-03 03:02:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42559 to 42557. [2019-10-03 03:02:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42557 states. [2019-10-03 03:02:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42557 states to 42557 states and 56660 transitions. [2019-10-03 03:02:08,025 INFO L78 Accepts]: Start accepts. Automaton has 42557 states and 56660 transitions. Word has length 67 [2019-10-03 03:02:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:02:08,025 INFO L475 AbstractCegarLoop]: Abstraction has 42557 states and 56660 transitions. [2019-10-03 03:02:08,025 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:02:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 42557 states and 56660 transitions. [2019-10-03 03:02:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-03 03:02:08,030 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:02:08,031 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:02:08,031 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:02:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:08,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1527473086, now seen corresponding path program 1 times [2019-10-03 03:02:08,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:02:08,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:08,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:02:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:08,034 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:02:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:02:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:02:08,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:02:08,132 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:02:08,133 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2019-10-03 03:02:08,133 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [75], [77], [80], [91], [93], [96], [107], [109], [112], [115], [117], [120], [121], [123], [132], [143], [145], [158], [166], [185], [196], [198], [211], [219], [238], [240], [243], [251], [253], [256], [264], [266], [270], [272], [295], [296], [300], [301], [302] [2019-10-03 03:02:08,136 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:02:08,137 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:02:08,146 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:02:08,154 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 03:02:08,154 INFO L272 AbstractInterpreter]: Visited 32 different actions 32 times. Never merged. Never widened. Performed 204 root evaluator evaluations with a maximum evaluation depth of 5. Performed 204 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 94 variables. [2019-10-03 03:02:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:08,155 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 03:02:08,221 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 79.61% of their original sizes. [2019-10-03 03:02:08,222 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 03:02:08,711 INFO L420 sIntCurrentIteration]: We unified 67 AI predicates to 67 [2019-10-03 03:02:08,711 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 03:02:08,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 03:02:08,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [9] total 26 [2019-10-03 03:02:08,712 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:02:08,713 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-03 03:02:08,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-03 03:02:08,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2019-10-03 03:02:08,713 INFO L87 Difference]: Start difference. First operand 42557 states and 56660 transitions. Second operand 19 states. [2019-10-03 03:02:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:02:12,473 INFO L93 Difference]: Finished difference Result 46711 states and 61829 transitions. [2019-10-03 03:02:12,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-03 03:02:12,473 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 68 [2019-10-03 03:02:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:02:12,512 INFO L225 Difference]: With dead ends: 46711 [2019-10-03 03:02:12,513 INFO L226 Difference]: Without dead ends: 46711 [2019-10-03 03:02:12,513 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2019-10-03 03:02:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46711 states. [2019-10-03 03:02:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46711 to 46290. [2019-10-03 03:02:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46290 states. [2019-10-03 03:02:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46290 states to 46290 states and 61375 transitions. [2019-10-03 03:02:12,895 INFO L78 Accepts]: Start accepts. Automaton has 46290 states and 61375 transitions. Word has length 68 [2019-10-03 03:02:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:02:12,895 INFO L475 AbstractCegarLoop]: Abstraction has 46290 states and 61375 transitions. [2019-10-03 03:02:12,895 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-03 03:02:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 46290 states and 61375 transitions. [2019-10-03 03:02:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-03 03:02:12,901 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:02:12,901 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:02:12,902 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:02:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash -941431235, now seen corresponding path program 1 times [2019-10-03 03:02:12,902 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:02:12,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:12,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:02:12,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:12,905 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:02:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:02:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:02:12,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:02:12,989 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:02:12,989 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2019-10-03 03:02:12,991 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [75], [77], [80], [91], [93], [96], [107], [109], [112], [115], [117], [120], [121], [123], [132], [143], [145], [158], [166], [185], [196], [198], [211], [219], [238], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:02:12,998 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:02:12,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:02:14,039 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:02:14,084 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 03:02:14,085 INFO L272 AbstractInterpreter]: Visited 58 different actions 139 times. Merged at 31 different actions 66 times. Widened at 2 different actions 2 times. Performed 544 root evaluator evaluations with a maximum evaluation depth of 5. Performed 544 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 7 fixpoints after 3 different actions. Largest state had 94 variables. [2019-10-03 03:02:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:14,086 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 03:02:14,201 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 82% of their original sizes. [2019-10-03 03:02:14,201 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 03:02:15,411 INFO L420 sIntCurrentIteration]: We unified 67 AI predicates to 67 [2019-10-03 03:02:15,411 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 03:02:15,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 03:02:15,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [38] imperfect sequences [7] total 43 [2019-10-03 03:02:15,412 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:02:15,412 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-10-03 03:02:15,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-10-03 03:02:15,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1235, Unknown=0, NotChecked=0, Total=1406 [2019-10-03 03:02:15,413 INFO L87 Difference]: Start difference. First operand 46290 states and 61375 transitions. Second operand 38 states. [2019-10-03 03:02:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:02:39,911 INFO L93 Difference]: Finished difference Result 84108 states and 110416 transitions. [2019-10-03 03:02:39,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2019-10-03 03:02:39,911 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 68 [2019-10-03 03:02:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:02:39,985 INFO L225 Difference]: With dead ends: 84108 [2019-10-03 03:02:39,985 INFO L226 Difference]: Without dead ends: 84108 [2019-10-03 03:02:39,993 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47488 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=12948, Invalid=93654, Unknown=0, NotChecked=0, Total=106602 [2019-10-03 03:02:40,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84108 states. [2019-10-03 03:02:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84108 to 49284. [2019-10-03 03:02:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49284 states. [2019-10-03 03:02:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49284 states to 49284 states and 64948 transitions. [2019-10-03 03:02:40,541 INFO L78 Accepts]: Start accepts. Automaton has 49284 states and 64948 transitions. Word has length 68 [2019-10-03 03:02:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:02:40,541 INFO L475 AbstractCegarLoop]: Abstraction has 49284 states and 64948 transitions. [2019-10-03 03:02:40,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-10-03 03:02:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 49284 states and 64948 transitions. [2019-10-03 03:02:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-03 03:02:40,547 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:02:40,547 INFO L411 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] [2019-10-03 03:02:40,548 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:02:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1947444675, now seen corresponding path program 1 times [2019-10-03 03:02:40,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:02:40,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:40,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:02:40,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:40,551 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:02:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:02:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:02:40,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:02:40,635 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:02:40,635 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 70 with the following transitions: [2019-10-03 03:02:40,636 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [77], [80], [83], [86], [91], [93], [96], [99], [102], [105], [107], [109], [112], [115], [117], [120], [121], [123], [132], [145], [148], [151], [154], [156], [158], [187], [190], [198], [201], [204], [207], [209], [211], [253], [266], [274], [295], [296], [300], [301], [302] [2019-10-03 03:02:40,638 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:02:40,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:02:40,645 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:02:40,667 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 03:02:40,667 INFO L272 AbstractInterpreter]: Visited 56 different actions 86 times. Merged at 26 different actions 26 times. Never widened. Performed 353 root evaluator evaluations with a maximum evaluation depth of 5. Performed 353 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 2 fixpoints after 2 different actions. Largest state had 95 variables. [2019-10-03 03:02:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:40,668 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 03:02:40,732 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 82.38% of their original sizes. [2019-10-03 03:02:40,732 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 03:02:42,230 INFO L420 sIntCurrentIteration]: We unified 68 AI predicates to 68 [2019-10-03 03:02:42,231 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 03:02:42,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 03:02:42,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [7] total 45 [2019-10-03 03:02:42,231 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:02:42,232 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-03 03:02:42,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-03 03:02:42,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1354, Unknown=0, NotChecked=0, Total=1560 [2019-10-03 03:02:42,233 INFO L87 Difference]: Start difference. First operand 49284 states and 64948 transitions. Second operand 40 states. [2019-10-03 03:02:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:02:58,947 INFO L93 Difference]: Finished difference Result 71592 states and 94679 transitions. [2019-10-03 03:02:58,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2019-10-03 03:02:58,948 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 69 [2019-10-03 03:02:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:02:59,019 INFO L225 Difference]: With dead ends: 71592 [2019-10-03 03:02:59,019 INFO L226 Difference]: Without dead ends: 71592 [2019-10-03 03:02:59,020 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7057 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2736, Invalid=16170, Unknown=0, NotChecked=0, Total=18906 [2019-10-03 03:02:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71592 states. [2019-10-03 03:02:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71592 to 41235. [2019-10-03 03:02:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41235 states. [2019-10-03 03:02:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41235 states to 41235 states and 54432 transitions. [2019-10-03 03:02:59,549 INFO L78 Accepts]: Start accepts. Automaton has 41235 states and 54432 transitions. Word has length 69 [2019-10-03 03:02:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:02:59,550 INFO L475 AbstractCegarLoop]: Abstraction has 41235 states and 54432 transitions. [2019-10-03 03:02:59,550 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-03 03:02:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 41235 states and 54432 transitions. [2019-10-03 03:02:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-03 03:02:59,553 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:02:59,553 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:02:59,554 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:02:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:02:59,554 INFO L82 PathProgramCache]: Analyzing trace with hash 631708975, now seen corresponding path program 1 times [2019-10-03 03:02:59,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:02:59,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:59,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:02:59,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:02:59,557 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:02:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:02:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-03 03:02:59,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:02:59,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 03:02:59,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:02:59,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 03:02:59,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 03:02:59,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:02:59,626 INFO L87 Difference]: Start difference. First operand 41235 states and 54432 transitions. Second operand 5 states. [2019-10-03 03:02:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:02:59,804 INFO L93 Difference]: Finished difference Result 48750 states and 64662 transitions. [2019-10-03 03:02:59,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:02:59,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-10-03 03:02:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:02:59,870 INFO L225 Difference]: With dead ends: 48750 [2019-10-03 03:02:59,870 INFO L226 Difference]: Without dead ends: 48750 [2019-10-03 03:02:59,870 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-03 03:02:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48750 states. [2019-10-03 03:03:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48750 to 45701. [2019-10-03 03:03:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45701 states. [2019-10-03 03:03:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45701 states to 45701 states and 60450 transitions. [2019-10-03 03:03:00,293 INFO L78 Accepts]: Start accepts. Automaton has 45701 states and 60450 transitions. Word has length 70 [2019-10-03 03:03:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:03:00,293 INFO L475 AbstractCegarLoop]: Abstraction has 45701 states and 60450 transitions. [2019-10-03 03:03:00,293 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 03:03:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 45701 states and 60450 transitions. [2019-10-03 03:03:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-03 03:03:00,297 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:03:00,297 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:03:00,298 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:03:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:03:00,298 INFO L82 PathProgramCache]: Analyzing trace with hash -168256361, now seen corresponding path program 1 times [2019-10-03 03:03:00,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:03:00,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:00,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:03:00,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:00,301 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:03:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:03:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-03 03:03:00,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:03:00,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 03:03:00,372 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:03:00,372 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 03:03:00,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 03:03:00,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:03:00,373 INFO L87 Difference]: Start difference. First operand 45701 states and 60450 transitions. Second operand 5 states. [2019-10-03 03:03:00,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:03:00,623 INFO L93 Difference]: Finished difference Result 56180 states and 74654 transitions. [2019-10-03 03:03:00,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:03:00,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-10-03 03:03:00,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:03:00,719 INFO L225 Difference]: With dead ends: 56180 [2019-10-03 03:03:00,719 INFO L226 Difference]: Without dead ends: 56180 [2019-10-03 03:03:00,720 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-03 03:03:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56180 states. [2019-10-03 03:03:01,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56180 to 53131. [2019-10-03 03:03:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53131 states. [2019-10-03 03:03:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53131 states to 53131 states and 70442 transitions. [2019-10-03 03:03:01,929 INFO L78 Accepts]: Start accepts. Automaton has 53131 states and 70442 transitions. Word has length 71 [2019-10-03 03:03:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:03:01,929 INFO L475 AbstractCegarLoop]: Abstraction has 53131 states and 70442 transitions. [2019-10-03 03:03:01,929 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 03:03:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 53131 states and 70442 transitions. [2019-10-03 03:03:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-03 03:03:01,934 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:03:01,934 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:03:01,934 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:03:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:03:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1094042354, now seen corresponding path program 1 times [2019-10-03 03:03:01,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:03:01,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:01,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:03:01,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:01,938 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:03:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:03:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:03:02,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:03:02,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:03:02,001 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:03:02,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:03:02,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:03:02,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:03:02,006 INFO L87 Difference]: Start difference. First operand 53131 states and 70442 transitions. Second operand 3 states. [2019-10-03 03:03:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:03:02,191 INFO L93 Difference]: Finished difference Result 56187 states and 73349 transitions. [2019-10-03 03:03:02,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:03:02,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2019-10-03 03:03:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:03:02,323 INFO L225 Difference]: With dead ends: 56187 [2019-10-03 03:03:02,323 INFO L226 Difference]: Without dead ends: 52452 [2019-10-03 03:03:02,324 INFO L640 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 [2019-10-03 03:03:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52452 states. [2019-10-03 03:03:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52452 to 51110. [2019-10-03 03:03:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51110 states. [2019-10-03 03:03:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51110 states to 51110 states and 67014 transitions. [2019-10-03 03:03:02,935 INFO L78 Accepts]: Start accepts. Automaton has 51110 states and 67014 transitions. Word has length 73 [2019-10-03 03:03:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:03:02,935 INFO L475 AbstractCegarLoop]: Abstraction has 51110 states and 67014 transitions. [2019-10-03 03:03:02,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:03:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 51110 states and 67014 transitions. [2019-10-03 03:03:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-03 03:03:02,939 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:03:02,939 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:03:02,939 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:03:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:03:02,939 INFO L82 PathProgramCache]: Analyzing trace with hash -333489234, now seen corresponding path program 1 times [2019-10-03 03:03:02,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:03:02,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:02,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:03:02,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:02,942 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:03:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:03:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:03:03,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:03:03,021 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:03:03,021 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 74 with the following transitions: [2019-10-03 03:03:03,021 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [75], [77], [80], [91], [93], [96], [99], [102], [107], [109], [112], [115], [117], [120], [121], [123], [132], [134], [137], [145], [148], [151], [154], [156], [158], [196], [198], [211], [219], [238], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:03:03,024 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:03:03,024 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:03:03,032 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:03:03,130 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:03:03,130 INFO L272 AbstractInterpreter]: Visited 64 different actions 322 times. Merged at 39 different actions 225 times. Widened at 13 different actions 28 times. Performed 973 root evaluator evaluations with a maximum evaluation depth of 5. Performed 973 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 18 fixpoints after 10 different actions. Largest state had 95 variables. [2019-10-03 03:03:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:03:03,131 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:03:03,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:03:03,131 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 [2019-10-03 03:03:03,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:03:03,216 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:03:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:03:03,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-03 03:03:03,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:03:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:03:03,361 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:03:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:03:03,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:03:03,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-10-03 03:03:03,419 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:03:03,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-03 03:03:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-03 03:03:03,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-03 03:03:03,420 INFO L87 Difference]: Start difference. First operand 51110 states and 67014 transitions. Second operand 11 states. [2019-10-03 03:03:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:03:04,009 INFO L93 Difference]: Finished difference Result 86149 states and 111330 transitions. [2019-10-03 03:03:04,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-03 03:03:04,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2019-10-03 03:03:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:03:04,096 INFO L225 Difference]: With dead ends: 86149 [2019-10-03 03:03:04,097 INFO L226 Difference]: Without dead ends: 86149 [2019-10-03 03:03:04,097 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 138 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-10-03 03:03:04,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86149 states. [2019-10-03 03:03:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86149 to 55881. [2019-10-03 03:03:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55881 states. [2019-10-03 03:03:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55881 states to 55881 states and 73148 transitions. [2019-10-03 03:03:05,009 INFO L78 Accepts]: Start accepts. Automaton has 55881 states and 73148 transitions. Word has length 73 [2019-10-03 03:03:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:03:05,009 INFO L475 AbstractCegarLoop]: Abstraction has 55881 states and 73148 transitions. [2019-10-03 03:03:05,009 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-03 03:03:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 55881 states and 73148 transitions. [2019-10-03 03:03:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-03 03:03:05,014 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:03:05,014 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:03:05,014 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:03:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:03:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1874328360, now seen corresponding path program 1 times [2019-10-03 03:03:05,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:03:05,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:05,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:03:05,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:03:05,018 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:03:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:03:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:03:05,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:03:05,084 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:03:05,084 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 75 with the following transitions: [2019-10-03 03:03:05,085 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [75], [77], [80], [83], [86], [91], [93], [96], [99], [107], [109], [112], [115], [117], [120], [121], [123], [132], [141], [145], [158], [166], [185], [187], [190], [198], [201], [204], [207], [209], [211], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:03:05,086 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:03:05,086 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:03:05,094 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:03:05,146 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 03:03:05,147 INFO L272 AbstractInterpreter]: Visited 64 different actions 179 times. Merged at 37 different actions 100 times. Never widened. Performed 603 root evaluator evaluations with a maximum evaluation depth of 5. Performed 603 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 7 fixpoints after 6 different actions. Largest state had 95 variables. [2019-10-03 03:03:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:03:05,147 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 03:03:05,206 INFO L227 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 81.84% of their original sizes. [2019-10-03 03:03:05,206 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 03:03:06,573 INFO L420 sIntCurrentIteration]: We unified 73 AI predicates to 73 [2019-10-03 03:03:06,573 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 03:03:06,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 03:03:06,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [7] total 45 [2019-10-03 03:03:06,574 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:03:06,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-03 03:03:06,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-03 03:03:06,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1385, Unknown=0, NotChecked=0, Total=1560 [2019-10-03 03:03:06,575 INFO L87 Difference]: Start difference. First operand 55881 states and 73148 transitions. Second operand 40 states. [2019-10-03 03:04:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:04:01,848 INFO L93 Difference]: Finished difference Result 124365 states and 160089 transitions. [2019-10-03 03:04:01,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 598 states. [2019-10-03 03:04:01,848 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 74 [2019-10-03 03:04:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:04:01,967 INFO L225 Difference]: With dead ends: 124365 [2019-10-03 03:04:01,967 INFO L226 Difference]: Without dead ends: 124319 [2019-10-03 03:04:01,984 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 609 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176729 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=31381, Invalid=341329, Unknown=0, NotChecked=0, Total=372710 [2019-10-03 03:04:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124319 states. [2019-10-03 03:04:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124319 to 68135. [2019-10-03 03:04:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68135 states. [2019-10-03 03:04:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68135 states to 68135 states and 88606 transitions. [2019-10-03 03:04:03,094 INFO L78 Accepts]: Start accepts. Automaton has 68135 states and 88606 transitions. Word has length 74 [2019-10-03 03:04:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:04:03,094 INFO L475 AbstractCegarLoop]: Abstraction has 68135 states and 88606 transitions. [2019-10-03 03:04:03,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-03 03:04:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 68135 states and 88606 transitions. [2019-10-03 03:04:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-03 03:04:03,099 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:04:03,099 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:04:03,099 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:04:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:04:03,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1264889280, now seen corresponding path program 1 times [2019-10-03 03:04:03,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:04:03,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:04:03,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:04:03,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:04:03,102 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:04:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:04:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:04:03,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:04:03,316 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:04:03,316 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 76 with the following transitions: [2019-10-03 03:04:03,316 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [75], [77], [80], [91], [93], [96], [99], [102], [107], [109], [112], [115], [117], [120], [121], [123], [132], [134], [137], [145], [148], [151], [154], [156], [158], [196], [198], [201], [204], [207], [209], [211], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:04:03,317 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:04:03,317 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:04:03,324 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:04:03,459 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:04:03,459 INFO L272 AbstractInterpreter]: Visited 70 different actions 512 times. Merged at 46 different actions 398 times. Widened at 16 different actions 60 times. Performed 1470 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1470 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 36 fixpoints after 15 different actions. Largest state had 96 variables. [2019-10-03 03:04:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:04:03,460 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:04:03,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:04:03,460 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 03:04:03,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:04:03,560 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:04:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:04:03,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-03 03:04:03,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:04:03,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:04:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:04:03,926 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:04:04,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:04:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:04:04,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:04:04,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-10-03 03:04:04,154 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:04:04,154 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-03 03:04:04,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-03 03:04:04,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2019-10-03 03:04:04,155 INFO L87 Difference]: Start difference. First operand 68135 states and 88606 transitions. Second operand 17 states. [2019-10-03 03:04:06,500 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2019-10-03 03:04:07,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:04:07,888 INFO L93 Difference]: Finished difference Result 263135 states and 340331 transitions. [2019-10-03 03:04:07,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-10-03 03:04:07,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-10-03 03:04:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:04:08,234 INFO L225 Difference]: With dead ends: 263135 [2019-10-03 03:04:08,234 INFO L226 Difference]: Without dead ends: 263135 [2019-10-03 03:04:08,235 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1020, Invalid=2886, Unknown=0, NotChecked=0, Total=3906 [2019-10-03 03:04:08,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263135 states. [2019-10-03 03:04:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263135 to 115012. [2019-10-03 03:04:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115012 states. [2019-10-03 03:04:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115012 states to 115012 states and 149404 transitions. [2019-10-03 03:04:10,656 INFO L78 Accepts]: Start accepts. Automaton has 115012 states and 149404 transitions. Word has length 75 [2019-10-03 03:04:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:04:10,656 INFO L475 AbstractCegarLoop]: Abstraction has 115012 states and 149404 transitions. [2019-10-03 03:04:10,656 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-03 03:04:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 115012 states and 149404 transitions. [2019-10-03 03:04:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-03 03:04:10,661 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:04:10,661 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:04:10,661 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:04:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:04:10,662 INFO L82 PathProgramCache]: Analyzing trace with hash -904511359, now seen corresponding path program 1 times [2019-10-03 03:04:10,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:04:10,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:04:10,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:04:10,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:04:10,664 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:04:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:04:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:04:10,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:04:10,846 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:04:10,846 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 76 with the following transitions: [2019-10-03 03:04:10,847 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [75], [77], [80], [83], [86], [91], [93], [96], [99], [102], [107], [109], [112], [115], [117], [120], [121], [123], [132], [134], [137], [145], [148], [151], [154], [156], [158], [187], [190], [198], [201], [204], [207], [209], [211], [249], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:04:10,848 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:04:10,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:04:10,855 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:04:11,058 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:04:11,059 INFO L272 AbstractInterpreter]: Visited 70 different actions 626 times. Merged at 46 different actions 497 times. Widened at 18 different actions 93 times. Performed 1780 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1780 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 49 fixpoints after 18 different actions. Largest state had 96 variables. [2019-10-03 03:04:11,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:04:11,059 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:04:11,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:04:11,059 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 03:04:11,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:04:11,156 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:04:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:04:11,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-03 03:04:11,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:04:11,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:04:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:04:12,216 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:04:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:04:12,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:04:12,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2019-10-03 03:04:12,592 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:04:12,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-03 03:04:12,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-03 03:04:12,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2019-10-03 03:04:12,593 INFO L87 Difference]: Start difference. First operand 115012 states and 149404 transitions. Second operand 19 states. [2019-10-03 03:04:13,265 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-10-03 03:04:13,531 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-10-03 03:04:14,059 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-10-03 03:04:14,408 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-10-03 03:04:14,950 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-10-03 03:04:15,330 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-03 03:04:15,753 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-10-03 03:04:16,165 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-03 03:04:16,555 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-03 03:04:17,003 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-03 03:04:17,466 WARN L191 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-03 03:04:17,858 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-03 03:04:18,260 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-10-03 03:04:18,608 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-03 03:04:18,916 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-03 03:04:19,305 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-03 03:04:19,652 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-03 03:04:19,978 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-03 03:04:20,355 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-03 03:04:20,724 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-03 03:04:21,121 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-03 03:04:21,583 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-03 03:04:21,880 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:04:22,306 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-03 03:04:22,781 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-03 03:04:23,131 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:04:23,969 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-03 03:04:24,370 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-03 03:04:25,079 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:04:25,594 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-03 03:04:25,957 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-03 03:04:26,345 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:04:26,619 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-10-03 03:04:27,003 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-03 03:04:27,295 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-10-03 03:04:27,822 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:04:28,309 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-10-03 03:04:28,943 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-03 03:04:29,379 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-10-03 03:04:29,711 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-10-03 03:04:30,057 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-10-03 03:04:30,416 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-10-03 03:04:30,813 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-10-03 03:04:31,227 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-10-03 03:04:31,595 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-03 03:04:31,951 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-10-03 03:04:32,316 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:04:32,680 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:04:33,009 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-10-03 03:04:33,366 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-03 03:04:33,832 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-03 03:04:34,225 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:04:34,629 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-03 03:04:35,068 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-10-03 03:04:35,565 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-10-03 03:04:36,014 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2019-10-03 03:04:36,406 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-10-03 03:04:36,799 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-03 03:04:37,196 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:04:37,607 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:04:38,005 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-03 03:04:38,419 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-03 03:04:38,878 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-10-03 03:04:39,276 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2019-10-03 03:04:39,584 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-10-03 03:04:39,859 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-10-03 03:04:40,288 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-10-03 03:04:40,655 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-10-03 03:04:41,000 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-10-03 03:04:41,330 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-10-03 03:04:41,676 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-10-03 03:04:41,945 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-03 03:04:42,294 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-10-03 03:04:42,619 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-03 03:04:43,011 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-10-03 03:04:43,394 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:04:43,776 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-03 03:04:44,173 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:04:44,591 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-03 03:04:44,949 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-10-03 03:04:45,455 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-10-03 03:04:45,896 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:04:46,377 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:04:46,784 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:04:47,170 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-03 03:04:47,974 WARN L191 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-10-03 03:04:48,283 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:04:48,593 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-03 03:04:49,030 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-03 03:04:49,410 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-10-03 03:04:49,670 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-10-03 03:04:49,990 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-10-03 03:04:50,341 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:04:50,655 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:04:51,025 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-03 03:04:51,453 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-10-03 03:04:51,967 WARN L191 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:04:52,366 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-10-03 03:04:52,739 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-10-03 03:04:52,956 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-03 03:04:53,321 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:04:53,536 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-10-03 03:04:53,984 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-10-03 03:04:54,380 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-10-03 03:04:54,802 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-10-03 03:04:55,229 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-10-03 03:04:55,814 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:04:56,306 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-10-03 03:04:56,593 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-10-03 03:04:56,799 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-10-03 03:04:57,322 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-10-03 03:04:57,822 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-10-03 03:04:58,150 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-10-03 03:04:58,439 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:04:58,909 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-03 03:04:59,173 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-10-03 03:04:59,681 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-03 03:05:00,008 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-03 03:05:00,312 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-03 03:05:00,775 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-10-03 03:05:01,373 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-10-03 03:05:01,973 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:05:02,494 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-10-03 03:05:02,949 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-03 03:05:03,473 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:05:03,937 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-10-03 03:05:04,440 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-10-03 03:05:04,774 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-03 03:05:05,317 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-03 03:05:05,754 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-10-03 03:05:05,999 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:05:06,413 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-10-03 03:05:06,637 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-10-03 03:05:07,051 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2019-10-03 03:05:07,296 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-10-03 03:05:07,642 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:05:08,166 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-03 03:05:08,595 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:05:08,866 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-10-03 03:05:09,228 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-10-03 03:05:09,462 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-03 03:05:10,393 WARN L191 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-10-03 03:05:10,685 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-03 03:05:10,932 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-10-03 03:05:11,313 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-03 03:05:11,708 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-03 03:05:12,095 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2019-10-03 03:05:12,331 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-10-03 03:05:12,578 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-10-03 03:05:12,966 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-10-03 03:05:13,179 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-03 03:05:13,426 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-03 03:05:13,743 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:05:14,128 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2019-10-03 03:05:14,631 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-10-03 03:05:14,895 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-03 03:05:15,099 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-03 03:05:15,358 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:05:15,712 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-03 03:05:16,177 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-10-03 03:05:16,433 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-03 03:05:16,829 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-10-03 03:05:17,035 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-10-03 03:05:17,423 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-03 03:05:17,882 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-10-03 03:05:18,145 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-03 03:05:18,547 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-10-03 03:05:18,848 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-03 03:05:19,273 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-10-03 03:05:19,501 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-03 03:05:19,832 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:05:20,323 WARN L191 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-10-03 03:05:20,587 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-10-03 03:05:20,856 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:05:21,272 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-03 03:05:21,757 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-10-03 03:05:22,032 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-03 03:05:22,351 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-03 03:05:22,704 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-10-03 03:05:23,113 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-10-03 03:05:23,381 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:05:23,757 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-10-03 03:05:24,074 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-10-03 03:05:24,430 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:05:24,741 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-03 03:05:25,067 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-10-03 03:05:25,499 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-10-03 03:05:25,916 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-10-03 03:05:26,345 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-10-03 03:05:26,587 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-03 03:05:26,848 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-10-03 03:05:27,100 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-03 03:05:27,337 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-03 03:05:27,564 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:05:27,963 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-03 03:05:28,424 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:05:28,697 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:05:28,993 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:05:29,302 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-10-03 03:05:29,591 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:05:29,886 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-03 03:05:30,755 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-10-03 03:05:30,980 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-03 03:05:31,241 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-03 03:05:31,616 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:05:31,854 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-03 03:05:32,071 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-03 03:05:32,305 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:05:32,785 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-10-03 03:05:33,091 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:05:33,251 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-10-03 03:05:33,550 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:05:33,716 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-10-03 03:05:34,088 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-10-03 03:05:34,442 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-10-03 03:05:34,819 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2019-10-03 03:05:35,044 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-03 03:05:35,323 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-03 03:05:35,703 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-03 03:05:36,264 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-10-03 03:05:36,569 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-03 03:05:36,833 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-10-03 03:05:37,037 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-03 03:05:37,345 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:05:37,549 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-10-03 03:05:37,872 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-03 03:05:38,143 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:05:38,542 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-10-03 03:05:39,007 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-03 03:05:39,284 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-10-03 03:05:39,781 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-10-03 03:05:40,120 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-03 03:05:40,541 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-10-03 03:05:40,767 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:05:41,028 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:05:41,452 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2019-10-03 03:05:41,739 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-10-03 03:05:42,002 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-03 03:05:42,301 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-10-03 03:05:42,839 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-03 03:05:43,249 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-03 03:05:43,517 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-03 03:05:43,820 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-10-03 03:05:44,117 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-03 03:05:44,378 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:05:44,999 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-03 03:05:45,462 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-10-03 03:05:45,730 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-03 03:05:46,058 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-10-03 03:05:46,263 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-10-03 03:05:46,567 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:05:46,992 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:05:47,465 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:05:47,637 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-10-03 03:05:48,641 WARN L191 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-10-03 03:05:48,986 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-10-03 03:05:49,252 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:05:49,587 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-10-03 03:05:49,857 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-03 03:05:50,224 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:05:50,485 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-10-03 03:05:50,726 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-10-03 03:05:51,050 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-03 03:05:51,384 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:05:51,737 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:05:52,029 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:05:52,307 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-10-03 03:05:52,778 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2019-10-03 03:05:53,062 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-03 03:05:53,424 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-10-03 03:05:53,607 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-10-03 03:05:53,901 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:05:54,139 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-03 03:05:54,378 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-03 03:05:54,797 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-03 03:05:55,192 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-10-03 03:05:55,525 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-03 03:05:55,839 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-03 03:05:56,263 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:05:56,839 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-10-03 03:05:57,521 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:05:57,990 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-03 03:05:58,282 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-03 03:05:58,578 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-03 03:05:59,068 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-03 03:05:59,390 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-03 03:05:59,947 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-10-03 03:06:00,155 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-10-03 03:06:00,464 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-10-03 03:06:01,055 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:06:01,475 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:06:01,937 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-03 03:06:02,474 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-03 03:06:02,764 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-03 03:06:03,086 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-10-03 03:06:03,624 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:06:04,080 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:06:04,344 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-03 03:06:04,575 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:06:04,790 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-03 03:06:05,089 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-10-03 03:06:05,491 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-03 03:06:05,764 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-10-03 03:06:07,233 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-10-03 03:06:07,426 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-10-03 03:06:07,937 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-03 03:06:08,225 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:06:08,525 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-03 03:06:09,054 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-10-03 03:06:09,204 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-10-03 03:06:09,501 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-10-03 03:06:09,654 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-10-03 03:06:10,360 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2019-10-03 03:06:10,754 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-10-03 03:06:11,149 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2019-10-03 03:06:11,513 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:06:12,145 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2019-10-03 03:06:12,601 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2019-10-03 03:06:12,838 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:06:13,163 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-03 03:06:13,477 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-10-03 03:06:13,657 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-10-03 03:06:13,907 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:06:14,347 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-10-03 03:06:14,624 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-03 03:06:14,949 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:06:15,117 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-03 03:06:15,410 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:06:15,672 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-10-03 03:06:15,953 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-03 03:06:16,488 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2019-10-03 03:06:16,830 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-10-03 03:06:17,176 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-03 03:06:17,639 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2019-10-03 03:06:18,113 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-10-03 03:06:18,385 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:06:18,697 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:06:18,983 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-10-03 03:06:19,261 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:06:19,569 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:06:19,862 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-10-03 03:06:20,231 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-10-03 03:06:20,684 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2019-10-03 03:06:21,030 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-10-03 03:06:21,331 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-10-03 03:06:21,832 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-10-03 03:06:22,073 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-03 03:06:22,330 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-10-03 03:06:22,709 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-10-03 03:06:23,444 WARN L191 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-10-03 03:06:23,935 WARN L191 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-10-03 03:06:24,275 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-10-03 03:06:24,622 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-10-03 03:06:24,820 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-10-03 03:06:25,016 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-10-03 03:06:25,459 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-10-03 03:06:25,652 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-10-03 03:06:26,116 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-10-03 03:06:26,347 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-10-03 03:06:26,605 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-10-03 03:06:27,102 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-10-03 03:06:27,454 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-10-03 03:06:27,854 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-10-03 03:06:28,444 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-10-03 03:06:28,816 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-03 03:06:29,373 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-10-03 03:06:29,729 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-03 03:06:30,051 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:06:30,337 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:06:30,693 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-03 03:06:30,987 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-10-03 03:06:31,422 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-03 03:06:31,911 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-10-03 03:06:32,152 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-10-03 03:06:32,627 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-10-03 03:06:33,081 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-03 03:06:33,457 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-03 03:06:33,805 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-10-03 03:06:34,285 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-10-03 03:06:34,513 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-03 03:06:34,693 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-10-03 03:06:34,969 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-10-03 03:06:35,434 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-10-03 03:06:35,784 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-10-03 03:06:36,144 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:06:36,328 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-10-03 03:06:36,547 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-10-03 03:06:36,832 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-03 03:06:37,180 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-10-03 03:06:37,452 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-10-03 03:06:37,708 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-03 03:06:38,041 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-10-03 03:06:38,374 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-10-03 03:06:38,647 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-10-03 03:06:39,607 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-10-03 03:06:39,911 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-10-03 03:06:40,163 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-03 03:06:40,507 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-10-03 03:06:40,741 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-10-03 03:06:41,199 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2019-10-03 03:06:41,466 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-10-03 03:06:41,825 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-10-03 03:06:42,027 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-03 03:06:42,263 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-10-03 03:06:42,551 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-10-03 03:06:42,875 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-10-03 03:06:43,255 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-10-03 03:06:43,559 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-03 03:06:43,947 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-10-03 03:06:44,151 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-10-03 03:06:44,434 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-10-03 03:06:44,890 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-10-03 03:06:45,212 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-10-03 03:06:45,616 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-10-03 03:06:46,052 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-10-03 03:06:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:06:53,920 INFO L93 Difference]: Finished difference Result 702784 states and 909698 transitions. [2019-10-03 03:06:53,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 465 states. [2019-10-03 03:06:53,921 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 75 [2019-10-03 03:06:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:06:54,888 INFO L225 Difference]: With dead ends: 702784 [2019-10-03 03:06:54,888 INFO L226 Difference]: Without dead ends: 702784 [2019-10-03 03:06:54,894 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 119 SyntacticMatches, 15 SemanticMatches, 489 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119426 ImplicationChecksByTransitivity, 140.5s TimeCoverageRelationStatistics Valid=31878, Invalid=208712, Unknown=0, NotChecked=0, Total=240590 [2019-10-03 03:06:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702784 states. [2019-10-03 03:07:00,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702784 to 258266. [2019-10-03 03:07:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258266 states. [2019-10-03 03:07:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258266 states to 258266 states and 340378 transitions. [2019-10-03 03:07:01,037 INFO L78 Accepts]: Start accepts. Automaton has 258266 states and 340378 transitions. Word has length 75 [2019-10-03 03:07:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:07:01,037 INFO L475 AbstractCegarLoop]: Abstraction has 258266 states and 340378 transitions. [2019-10-03 03:07:01,037 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-03 03:07:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 258266 states and 340378 transitions. [2019-10-03 03:07:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-03 03:07:01,043 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:07:01,043 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:07:01,043 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:07:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:07:01,044 INFO L82 PathProgramCache]: Analyzing trace with hash -206681859, now seen corresponding path program 1 times [2019-10-03 03:07:01,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:07:01,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:07:01,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:07:01,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:07:01,047 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:07:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:07:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:07:01,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:07:01,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:07:01,095 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:07:01,095 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:07:01,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:07:01,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:07:01,096 INFO L87 Difference]: Start difference. First operand 258266 states and 340378 transitions. Second operand 3 states. [2019-10-03 03:07:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:07:01,799 INFO L93 Difference]: Finished difference Result 252391 states and 328545 transitions. [2019-10-03 03:07:01,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:07:01,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-03 03:07:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:07:02,125 INFO L225 Difference]: With dead ends: 252391 [2019-10-03 03:07:02,126 INFO L226 Difference]: Without dead ends: 252391 [2019-10-03 03:07:02,126 INFO L640 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 [2019-10-03 03:07:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252391 states. [2019-10-03 03:07:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252391 to 252388. [2019-10-03 03:07:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252388 states. [2019-10-03 03:07:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252388 states to 252388 states and 328543 transitions. [2019-10-03 03:07:09,305 INFO L78 Accepts]: Start accepts. Automaton has 252388 states and 328543 transitions. Word has length 76 [2019-10-03 03:07:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:07:09,305 INFO L475 AbstractCegarLoop]: Abstraction has 252388 states and 328543 transitions. [2019-10-03 03:07:09,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:07:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 252388 states and 328543 transitions. [2019-10-03 03:07:09,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-03 03:07:09,309 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:07:09,309 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:07:09,309 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:07:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:07:09,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1270117650, now seen corresponding path program 1 times [2019-10-03 03:07:09,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:07:09,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:07:09,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:07:09,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:07:09,311 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:07:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:07:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:07:09,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:07:09,971 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:07:09,971 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 78 with the following transitions: [2019-10-03 03:07:09,971 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [75], [77], [80], [83], [86], [89], [91], [93], [96], [99], [102], [107], [109], [112], [115], [117], [120], [121], [123], [132], [134], [137], [145], [148], [151], [154], [156], [158], [198], [201], [204], [207], [209], [211], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:07:09,972 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:07:09,973 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:07:09,979 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:07:10,133 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:07:10,133 INFO L272 AbstractInterpreter]: Visited 72 different actions 449 times. Merged at 48 different actions 342 times. Widened at 16 different actions 36 times. Performed 1333 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1333 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 33 fixpoints after 11 different actions. Largest state had 96 variables. [2019-10-03 03:07:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:07:10,134 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:07:10,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:07:10,134 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 03:07:10,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:07:10,299 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:07:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:07:10,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-03 03:07:10,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:07:11,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:07:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:07:11,903 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:07:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:07:12,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:07:12,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 13] total 44 [2019-10-03 03:07:12,630 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:07:12,630 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-03 03:07:12,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-03 03:07:12,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1749, Unknown=0, NotChecked=0, Total=1892 [2019-10-03 03:07:12,631 INFO L87 Difference]: Start difference. First operand 252388 states and 328543 transitions. Second operand 34 states. [2019-10-03 03:07:12,903 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2019-10-03 03:07:14,373 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-10-03 03:07:15,139 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-03 03:07:15,419 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-10-03 03:07:17,784 WARN L191 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2019-10-03 03:07:19,804 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-03 03:07:22,408 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2019-10-03 03:07:22,906 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2019-10-03 03:07:23,134 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-03 03:07:23,371 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-03 03:07:23,709 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-10-03 03:07:24,063 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-03 03:07:24,734 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-03 03:07:25,069 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-10-03 03:07:25,248 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-10-03 03:07:26,055 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-03 03:07:26,473 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-03 03:07:26,659 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-03 03:07:26,893 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-10-03 03:07:27,562 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-03 03:07:27,879 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-10-03 03:07:28,140 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-03 03:07:28,614 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-03 03:07:28,838 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-03 03:07:29,188 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-03 03:07:29,647 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-10-03 03:07:29,822 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-10-03 03:07:30,203 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2019-10-03 03:07:30,689 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-03 03:07:31,260 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2019-10-03 03:07:31,507 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-10-03 03:07:31,711 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-03 03:07:31,941 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-10-03 03:07:32,849 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-10-03 03:07:33,238 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-10-03 03:07:33,399 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-10-03 03:07:33,556 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-10-03 03:07:33,918 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-03 03:07:34,905 WARN L191 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-10-03 03:07:35,145 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-10-03 03:07:35,304 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-10-03 03:07:35,918 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-03 03:07:37,274 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2019-10-03 03:07:37,661 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-10-03 03:07:38,079 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-03 03:07:38,583 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-10-03 03:07:38,887 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-10-03 03:07:39,592 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-03 03:07:39,908 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-03 03:07:40,393 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2019-10-03 03:07:40,969 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2019-10-03 03:07:41,880 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-10-03 03:07:42,624 WARN L191 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 114 [2019-10-03 03:07:42,811 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-10-03 03:07:43,068 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-10-03 03:07:43,364 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-10-03 03:07:43,679 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-03 03:07:44,122 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-10-03 03:07:45,232 WARN L191 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-03 03:07:45,638 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-10-03 03:07:46,082 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-10-03 03:07:46,387 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-10-03 03:07:47,072 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-10-03 03:07:47,382 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-03 03:07:47,580 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-10-03 03:07:48,128 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-10-03 03:07:49,253 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-10-03 03:07:49,441 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-10-03 03:07:50,213 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-10-03 03:07:52,023 WARN L191 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-10-03 03:07:52,566 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-10-03 03:07:52,841 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-03 03:07:53,584 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-10-03 03:07:53,815 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-10-03 03:07:54,135 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-10-03 03:07:54,464 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-10-03 03:07:55,551 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-10-03 03:07:55,971 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-10-03 03:07:56,570 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-10-03 03:07:57,447 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2019-10-03 03:07:57,719 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-10-03 03:07:58,009 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-10-03 03:07:58,347 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-10-03 03:07:58,665 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-10-03 03:07:59,367 WARN L191 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2019-10-03 03:07:59,601 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-10-03 03:08:00,410 WARN L191 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2019-10-03 03:08:00,625 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-10-03 03:08:02,611 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-03 03:08:03,257 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-10-03 03:08:07,609 WARN L191 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-10-03 03:08:07,984 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-10-03 03:08:08,747 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-10-03 03:08:09,475 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-10-03 03:08:10,694 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-10-03 03:08:11,526 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-10-03 03:08:11,759 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-10-03 03:08:12,140 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-10-03 03:08:12,738 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-10-03 03:08:13,567 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-10-03 03:08:13,720 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-10-03 03:08:16,953 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-10-03 03:08:17,592 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-10-03 03:08:18,188 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-10-03 03:08:18,552 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-10-03 03:08:19,596 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-10-03 03:08:19,853 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-10-03 03:08:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:08:21,818 INFO L93 Difference]: Finished difference Result 1058085 states and 1380715 transitions. [2019-10-03 03:08:21,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2019-10-03 03:08:21,818 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 77 [2019-10-03 03:08:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:08:23,438 INFO L225 Difference]: With dead ends: 1058085 [2019-10-03 03:08:23,438 INFO L226 Difference]: Without dead ends: 1058085 [2019-10-03 03:08:23,440 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30672 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=13252, Invalid=62098, Unknown=0, NotChecked=0, Total=75350 [2019-10-03 03:08:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058085 states. [2019-10-03 03:08:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058085 to 296166. [2019-10-03 03:08:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296166 states. [2019-10-03 03:08:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296166 states to 296166 states and 384731 transitions. [2019-10-03 03:08:40,886 INFO L78 Accepts]: Start accepts. Automaton has 296166 states and 384731 transitions. Word has length 77 [2019-10-03 03:08:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:08:40,886 INFO L475 AbstractCegarLoop]: Abstraction has 296166 states and 384731 transitions. [2019-10-03 03:08:40,886 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-03 03:08:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 296166 states and 384731 transitions. [2019-10-03 03:08:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-03 03:08:40,909 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:08:40,909 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:08:40,909 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:08:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:08:40,909 INFO L82 PathProgramCache]: Analyzing trace with hash -507220643, now seen corresponding path program 1 times [2019-10-03 03:08:40,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:08:40,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:08:40,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:08:40,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:08:40,912 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:08:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:08:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-03 03:08:40,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:08:40,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:08:40,956 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:08:40,957 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:08:40,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:08:40,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:08:40,957 INFO L87 Difference]: Start difference. First operand 296166 states and 384731 transitions. Second operand 3 states. [2019-10-03 03:08:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:08:42,836 INFO L93 Difference]: Finished difference Result 266449 states and 343593 transitions. [2019-10-03 03:08:42,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:08:42,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-03 03:08:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:08:43,162 INFO L225 Difference]: With dead ends: 266449 [2019-10-03 03:08:43,162 INFO L226 Difference]: Without dead ends: 266449 [2019-10-03 03:08:43,162 INFO L640 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 [2019-10-03 03:08:43,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266449 states. [2019-10-03 03:08:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266449 to 264017. [2019-10-03 03:08:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264017 states. [2019-10-03 03:08:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264017 states to 264017 states and 340593 transitions. [2019-10-03 03:08:50,449 INFO L78 Accepts]: Start accepts. Automaton has 264017 states and 340593 transitions. Word has length 102 [2019-10-03 03:08:50,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:08:50,449 INFO L475 AbstractCegarLoop]: Abstraction has 264017 states and 340593 transitions. [2019-10-03 03:08:50,449 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:08:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 264017 states and 340593 transitions. [2019-10-03 03:08:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-03 03:08:50,476 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:08:50,477 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2019-10-03 03:08:50,477 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:08:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:08:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1997196966, now seen corresponding path program 2 times [2019-10-03 03:08:50,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:08:50,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:08:50,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:08:50,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:08:50,479 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:08:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:08:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-03 03:08:50,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:08:50,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:08:50,544 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:08:50,544 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:08:50,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:08:50,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:08:50,545 INFO L87 Difference]: Start difference. First operand 264017 states and 340593 transitions. Second operand 3 states. [2019-10-03 03:08:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:08:51,029 INFO L93 Difference]: Finished difference Result 219309 states and 280844 transitions. [2019-10-03 03:08:51,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:08:51,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-03 03:08:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:08:51,288 INFO L225 Difference]: With dead ends: 219309 [2019-10-03 03:08:51,288 INFO L226 Difference]: Without dead ends: 219309 [2019-10-03 03:08:51,288 INFO L640 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 [2019-10-03 03:08:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219309 states. [2019-10-03 03:08:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219309 to 214638. [2019-10-03 03:08:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214638 states. [2019-10-03 03:08:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214638 states to 214638 states and 275054 transitions. [2019-10-03 03:08:57,731 INFO L78 Accepts]: Start accepts. Automaton has 214638 states and 275054 transitions. Word has length 107 [2019-10-03 03:08:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:08:57,731 INFO L475 AbstractCegarLoop]: Abstraction has 214638 states and 275054 transitions. [2019-10-03 03:08:57,732 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:08:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 214638 states and 275054 transitions. [2019-10-03 03:08:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-03 03:08:57,744 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:08:57,744 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:08:57,744 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:08:57,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:08:57,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1225997574, now seen corresponding path program 1 times [2019-10-03 03:08:57,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:08:57,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:08:57,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-03 03:08:57,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:08:57,747 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:08:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:08:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-03 03:08:57,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:08:57,844 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:08:57,844 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 109 with the following transitions: [2019-10-03 03:08:57,844 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [75], [77], [80], [91], [93], [96], [99], [107], [109], [112], [115], [117], [120], [121], [123], [125], [130], [141], [145], [158], [166], [185], [196], [198], [201], [204], [207], [209], [211], [249], [251], [253], [266], [274], [295], [296], [300], [301], [302] [2019-10-03 03:08:57,846 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:08:57,846 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:08:57,853 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:08:57,951 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:08:57,951 INFO L272 AbstractInterpreter]: Visited 61 different actions 334 times. Merged at 37 different actions 238 times. Widened at 13 different actions 32 times. Performed 1083 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1083 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 33 fixpoints after 12 different actions. Largest state had 94 variables. [2019-10-03 03:08:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:08:57,952 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:08:57,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:08:57,952 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) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 03:08:58,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:08:58,087 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:08:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:08:58,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-03 03:08:58,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:08:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-03 03:08:58,365 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:08:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-03 03:08:58,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:08:58,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 18 [2019-10-03 03:08:58,523 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:08:58,523 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-03 03:08:58,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-03 03:08:58,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2019-10-03 03:08:58,524 INFO L87 Difference]: Start difference. First operand 214638 states and 275054 transitions. Second operand 11 states. [2019-10-03 03:09:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:09:00,118 INFO L93 Difference]: Finished difference Result 384785 states and 483100 transitions. [2019-10-03 03:09:00,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-03 03:09:00,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2019-10-03 03:09:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:09:00,762 INFO L225 Difference]: With dead ends: 384785 [2019-10-03 03:09:00,762 INFO L226 Difference]: Without dead ends: 384785 [2019-10-03 03:09:00,763 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2019-10-03 03:09:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384785 states. [2019-10-03 03:09:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384785 to 346347. [2019-10-03 03:09:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346347 states. [2019-10-03 03:09:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346347 states to 346347 states and 438173 transitions. [2019-10-03 03:09:08,585 INFO L78 Accepts]: Start accepts. Automaton has 346347 states and 438173 transitions. Word has length 108 [2019-10-03 03:09:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:09:08,586 INFO L475 AbstractCegarLoop]: Abstraction has 346347 states and 438173 transitions. [2019-10-03 03:09:08,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-03 03:09:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 346347 states and 438173 transitions. [2019-10-03 03:09:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-03 03:09:08,618 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:09:08,618 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:09:08,618 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:09:08,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2111438520, now seen corresponding path program 1 times [2019-10-03 03:09:08,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:09:08,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:08,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:08,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:08,622 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:09:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-03 03:09:08,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:09:08,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:09:08,679 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:09:08,680 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:09:08,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:09:08,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:09:08,680 INFO L87 Difference]: Start difference. First operand 346347 states and 438173 transitions. Second operand 3 states. [2019-10-03 03:09:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:09:10,321 INFO L93 Difference]: Finished difference Result 339324 states and 425741 transitions. [2019-10-03 03:09:10,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:09:10,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-03 03:09:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:09:10,700 INFO L225 Difference]: With dead ends: 339324 [2019-10-03 03:09:10,700 INFO L226 Difference]: Without dead ends: 339324 [2019-10-03 03:09:10,700 INFO L640 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 [2019-10-03 03:09:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339324 states. [2019-10-03 03:09:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339324 to 304211. [2019-10-03 03:09:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304211 states. [2019-10-03 03:09:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304211 states to 304211 states and 382109 transitions. [2019-10-03 03:09:20,599 INFO L78 Accepts]: Start accepts. Automaton has 304211 states and 382109 transitions. Word has length 122 [2019-10-03 03:09:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:09:20,599 INFO L475 AbstractCegarLoop]: Abstraction has 304211 states and 382109 transitions. [2019-10-03 03:09:20,599 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:09:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 304211 states and 382109 transitions. [2019-10-03 03:09:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-03 03:09:20,625 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:09:20,625 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-03 03:09:20,625 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:09:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1845441822, now seen corresponding path program 1 times [2019-10-03 03:09:20,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:09:20,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:20,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:20,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:20,629 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:09:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-03 03:09:20,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:09:20,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:09:20,703 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:09:20,703 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:09:20,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:09:20,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:09:20,704 INFO L87 Difference]: Start difference. First operand 304211 states and 382109 transitions. Second operand 3 states. [2019-10-03 03:09:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:09:20,927 INFO L93 Difference]: Finished difference Result 95580 states and 116680 transitions. [2019-10-03 03:09:20,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:09:20,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-03 03:09:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:09:21,005 INFO L225 Difference]: With dead ends: 95580 [2019-10-03 03:09:21,006 INFO L226 Difference]: Without dead ends: 95580 [2019-10-03 03:09:21,006 INFO L640 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 [2019-10-03 03:09:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95580 states. [2019-10-03 03:09:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95580 to 95578. [2019-10-03 03:09:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95578 states. [2019-10-03 03:09:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95578 states to 95578 states and 116679 transitions. [2019-10-03 03:09:22,619 INFO L78 Accepts]: Start accepts. Automaton has 95578 states and 116679 transitions. Word has length 122 [2019-10-03 03:09:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:09:22,619 INFO L475 AbstractCegarLoop]: Abstraction has 95578 states and 116679 transitions. [2019-10-03 03:09:22,620 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:09:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 95578 states and 116679 transitions. [2019-10-03 03:09:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-03 03:09:22,633 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:09:22,633 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-10-03 03:09:22,633 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:09:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash 9908157, now seen corresponding path program 1 times [2019-10-03 03:09:22,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:09:22,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:22,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:22,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:22,636 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:09:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-03 03:09:22,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:09:22,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 03:09:22,689 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:09:22,690 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 03:09:22,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 03:09:22,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 03:09:22,691 INFO L87 Difference]: Start difference. First operand 95578 states and 116679 transitions. Second operand 4 states. [2019-10-03 03:09:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:09:22,975 INFO L93 Difference]: Finished difference Result 99852 states and 120969 transitions. [2019-10-03 03:09:22,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:09:22,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-03 03:09:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:09:23,065 INFO L225 Difference]: With dead ends: 99852 [2019-10-03 03:09:23,065 INFO L226 Difference]: Without dead ends: 99852 [2019-10-03 03:09:23,065 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:09:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99852 states. [2019-10-03 03:09:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99852 to 82411. [2019-10-03 03:09:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82411 states. [2019-10-03 03:09:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82411 states to 82411 states and 99684 transitions. [2019-10-03 03:09:25,717 INFO L78 Accepts]: Start accepts. Automaton has 82411 states and 99684 transitions. Word has length 122 [2019-10-03 03:09:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:09:25,717 INFO L475 AbstractCegarLoop]: Abstraction has 82411 states and 99684 transitions. [2019-10-03 03:09:25,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 03:09:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 82411 states and 99684 transitions. [2019-10-03 03:09:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-03 03:09:25,727 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:09:25,727 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:09:25,727 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:09:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:25,727 INFO L82 PathProgramCache]: Analyzing trace with hash 944066232, now seen corresponding path program 1 times [2019-10-03 03:09:25,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:09:25,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:25,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:25,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:25,730 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:09:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:09:25,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:09:25,985 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:09:25,985 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 123 with the following transitions: [2019-10-03 03:09:25,985 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [73], [75], [77], [80], [83], [91], [93], [96], [99], [102], [107], [109], [112], [115], [117], [120], [121], [123], [132], [134], [137], [143], [145], [148], [151], [154], [156], [158], [194], [196], [198], [211], [219], [222], [225], [228], [230], [238], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:09:25,986 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:09:25,986 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:09:25,992 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:09:26,256 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:09:26,256 INFO L272 AbstractInterpreter]: Visited 76 different actions 941 times. Merged at 52 different actions 717 times. Widened at 20 different actions 137 times. Performed 2482 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2482 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 130 fixpoints after 24 different actions. Largest state had 96 variables. [2019-10-03 03:09:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:26,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:09:26,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:09:26,257 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 03:09:26,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:26,392 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:09:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:26,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-03 03:09:26,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:09:26,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:26,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:26,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:26,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 54 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-03 03:09:26,859 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:09:27,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-03 03:09:27,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:09:27,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2019-10-03 03:09:27,614 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:09:27,614 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-03 03:09:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-03 03:09:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2019-10-03 03:09:27,615 INFO L87 Difference]: Start difference. First operand 82411 states and 99684 transitions. Second operand 22 states. [2019-10-03 03:09:31,884 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2019-10-03 03:09:33,661 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2019-10-03 03:09:34,780 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2019-10-03 03:09:35,265 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-10-03 03:09:35,627 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2019-10-03 03:09:36,128 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-10-03 03:09:36,535 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-10-03 03:09:36,682 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-10-03 03:09:36,873 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-10-03 03:09:37,036 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2019-10-03 03:09:37,259 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2019-10-03 03:09:38,416 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2019-10-03 03:09:38,662 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-10-03 03:09:38,917 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-10-03 03:09:39,337 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-10-03 03:09:39,608 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-10-03 03:09:40,031 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-10-03 03:09:40,266 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2019-10-03 03:09:42,073 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2019-10-03 03:09:42,375 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2019-10-03 03:09:42,671 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2019-10-03 03:09:43,238 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2019-10-03 03:09:43,699 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-10-03 03:09:45,811 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2019-10-03 03:09:46,062 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2019-10-03 03:09:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:09:48,658 INFO L93 Difference]: Finished difference Result 184692 states and 221145 transitions. [2019-10-03 03:09:48,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2019-10-03 03:09:48,658 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 122 [2019-10-03 03:09:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:09:48,842 INFO L225 Difference]: With dead ends: 184692 [2019-10-03 03:09:48,842 INFO L226 Difference]: Without dead ends: 184692 [2019-10-03 03:09:48,843 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6820 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=4144, Invalid=18808, Unknown=0, NotChecked=0, Total=22952 [2019-10-03 03:09:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184692 states. [2019-10-03 03:09:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184692 to 73023. [2019-10-03 03:09:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73023 states. [2019-10-03 03:09:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73023 states to 73023 states and 87794 transitions. [2019-10-03 03:09:50,373 INFO L78 Accepts]: Start accepts. Automaton has 73023 states and 87794 transitions. Word has length 122 [2019-10-03 03:09:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:09:50,374 INFO L475 AbstractCegarLoop]: Abstraction has 73023 states and 87794 transitions. [2019-10-03 03:09:50,374 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-03 03:09:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 73023 states and 87794 transitions. [2019-10-03 03:09:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-03 03:09:50,384 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:09:50,384 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:09:50,384 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:09:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash -402125727, now seen corresponding path program 1 times [2019-10-03 03:09:50,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:09:50,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:50,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:50,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:50,387 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:09:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 58 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-03 03:09:50,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:09:50,847 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:09:50,847 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 124 with the following transitions: [2019-10-03 03:09:50,848 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [73], [75], [77], [80], [83], [91], [93], [96], [99], [102], [107], [109], [112], [115], [117], [120], [121], [123], [132], [134], [137], [143], [145], [148], [151], [154], [156], [158], [194], [198], [211], [219], [222], [225], [228], [230], [238], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:09:50,849 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:09:50,849 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:09:50,857 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:09:51,156 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:09:51,157 INFO L272 AbstractInterpreter]: Visited 75 different actions 771 times. Merged at 51 different actions 590 times. Widened at 19 different actions 119 times. Performed 2145 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2145 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 92 fixpoints after 21 different actions. Largest state had 96 variables. [2019-10-03 03:09:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:51,157 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:09:51,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:09:51,157 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 [2019-10-03 03:09:51,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:51,294 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:09:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:51,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-03 03:09:51,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:09:51,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:51,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:51,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:51,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:51,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:51,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 55 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-03 03:09:51,809 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:09:51,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:52,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:52,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:52,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:52,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:09:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-03 03:09:52,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:09:52,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 11] total 32 [2019-10-03 03:09:52,178 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:09:52,179 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-03 03:09:52,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-03 03:09:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2019-10-03 03:09:52,179 INFO L87 Difference]: Start difference. First operand 73023 states and 87794 transitions. Second operand 26 states. [2019-10-03 03:09:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:09:57,662 INFO L93 Difference]: Finished difference Result 139467 states and 168438 transitions. [2019-10-03 03:09:57,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-10-03 03:09:57,662 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 123 [2019-10-03 03:09:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:09:57,801 INFO L225 Difference]: With dead ends: 139467 [2019-10-03 03:09:57,802 INFO L226 Difference]: Without dead ends: 139467 [2019-10-03 03:09:57,802 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1207, Invalid=5113, Unknown=0, NotChecked=0, Total=6320 [2019-10-03 03:09:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139467 states. [2019-10-03 03:09:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139467 to 85125. [2019-10-03 03:09:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85125 states. [2019-10-03 03:09:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85125 states to 85125 states and 102478 transitions. [2019-10-03 03:09:59,184 INFO L78 Accepts]: Start accepts. Automaton has 85125 states and 102478 transitions. Word has length 123 [2019-10-03 03:09:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:09:59,184 INFO L475 AbstractCegarLoop]: Abstraction has 85125 states and 102478 transitions. [2019-10-03 03:09:59,184 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-03 03:09:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 85125 states and 102478 transitions. [2019-10-03 03:09:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-03 03:09:59,194 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:09:59,195 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:09:59,195 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:09:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:09:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1785876701, now seen corresponding path program 1 times [2019-10-03 03:09:59,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:09:59,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:59,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:09:59,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:09:59,197 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:09:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:09:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-03 03:09:59,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:09:59,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 03:09:59,241 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:09:59,242 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 03:09:59,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 03:09:59,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 03:09:59,242 INFO L87 Difference]: Start difference. First operand 85125 states and 102478 transitions. Second operand 3 states. [2019-10-03 03:09:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:09:59,406 INFO L93 Difference]: Finished difference Result 75643 states and 90607 transitions. [2019-10-03 03:09:59,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 03:09:59,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-10-03 03:09:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:09:59,474 INFO L225 Difference]: With dead ends: 75643 [2019-10-03 03:09:59,474 INFO L226 Difference]: Without dead ends: 75643 [2019-10-03 03:09:59,475 INFO L640 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 [2019-10-03 03:09:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75643 states. [2019-10-03 03:09:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75643 to 64130. [2019-10-03 03:09:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64130 states. [2019-10-03 03:10:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64130 states to 64130 states and 76850 transitions. [2019-10-03 03:10:00,029 INFO L78 Accepts]: Start accepts. Automaton has 64130 states and 76850 transitions. Word has length 124 [2019-10-03 03:10:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:10:00,030 INFO L475 AbstractCegarLoop]: Abstraction has 64130 states and 76850 transitions. [2019-10-03 03:10:00,030 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 03:10:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 64130 states and 76850 transitions. [2019-10-03 03:10:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-03 03:10:00,036 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:10:00,036 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:10:00,037 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:10:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:10:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash -736383423, now seen corresponding path program 2 times [2019-10-03 03:10:00,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:10:00,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:00,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:10:00,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:00,039 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:10:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:10:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-03 03:10:00,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:10:00,705 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:10:00,705 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-03 03:10:00,706 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-03 03:10:00,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:10:00,706 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 [2019-10-03 03:10:00,917 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-03 03:10:00,917 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-10-03 03:10:01,005 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-03 03:10:01,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-03 03:10:01,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-03 03:10:01,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:10:01,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-03 03:10:01,485 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:10:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-03 03:10:02,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:10:02,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2019-10-03 03:10:02,551 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:10:02,552 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-03 03:10:02,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-03 03:10:02,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=868, Unknown=0, NotChecked=0, Total=992 [2019-10-03 03:10:02,553 INFO L87 Difference]: Start difference. First operand 64130 states and 76850 transitions. Second operand 23 states. [2019-10-03 03:10:04,047 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 28 [2019-10-03 03:10:04,496 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2019-10-03 03:10:04,701 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2019-10-03 03:10:04,922 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2019-10-03 03:10:05,120 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2019-10-03 03:10:05,466 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2019-10-03 03:10:05,673 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2019-10-03 03:10:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:10:08,167 INFO L93 Difference]: Finished difference Result 121784 states and 146292 transitions. [2019-10-03 03:10:08,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-03 03:10:08,168 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 124 [2019-10-03 03:10:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:10:08,303 INFO L225 Difference]: With dead ends: 121784 [2019-10-03 03:10:08,303 INFO L226 Difference]: Without dead ends: 121784 [2019-10-03 03:10:08,303 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=518, Invalid=2032, Unknown=0, NotChecked=0, Total=2550 [2019-10-03 03:10:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121784 states. [2019-10-03 03:10:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121784 to 59921. [2019-10-03 03:10:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59921 states. [2019-10-03 03:10:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59921 states to 59921 states and 71836 transitions. [2019-10-03 03:10:09,461 INFO L78 Accepts]: Start accepts. Automaton has 59921 states and 71836 transitions. Word has length 124 [2019-10-03 03:10:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:10:09,462 INFO L475 AbstractCegarLoop]: Abstraction has 59921 states and 71836 transitions. [2019-10-03 03:10:09,462 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-03 03:10:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 59921 states and 71836 transitions. [2019-10-03 03:10:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-03 03:10:09,469 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:10:09,470 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:10:09,470 INFO L418 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:10:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:10:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1296463840, now seen corresponding path program 1 times [2019-10-03 03:10:09,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:10:09,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:09,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-03 03:10:09,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:09,473 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:10:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:10:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-03 03:10:09,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:10:09,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 03:10:09,523 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:10:09,523 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 03:10:09,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 03:10:09,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 03:10:09,524 INFO L87 Difference]: Start difference. First operand 59921 states and 71836 transitions. Second operand 4 states. [2019-10-03 03:10:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:10:09,742 INFO L93 Difference]: Finished difference Result 54212 states and 64161 transitions. [2019-10-03 03:10:09,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:10:09,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-03 03:10:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:10:09,796 INFO L225 Difference]: With dead ends: 54212 [2019-10-03 03:10:09,796 INFO L226 Difference]: Without dead ends: 54212 [2019-10-03 03:10:09,797 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:10:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54212 states. [2019-10-03 03:10:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54212 to 35661. [2019-10-03 03:10:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35661 states. [2019-10-03 03:10:10,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35661 states to 35661 states and 42202 transitions. [2019-10-03 03:10:10,155 INFO L78 Accepts]: Start accepts. Automaton has 35661 states and 42202 transitions. Word has length 126 [2019-10-03 03:10:10,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:10:10,155 INFO L475 AbstractCegarLoop]: Abstraction has 35661 states and 42202 transitions. [2019-10-03 03:10:10,155 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 03:10:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 35661 states and 42202 transitions. [2019-10-03 03:10:10,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-03 03:10:10,160 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:10:10,160 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:10:10,160 INFO L418 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:10:10,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:10:10,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1882505691, now seen corresponding path program 1 times [2019-10-03 03:10:10,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:10:10,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:10,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:10:10,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:10,162 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:10:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:10:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-03 03:10:10,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 03:10:10,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 03:10:10,205 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 03:10:10,206 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 03:10:10,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 03:10:10,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 03:10:10,206 INFO L87 Difference]: Start difference. First operand 35661 states and 42202 transitions. Second operand 4 states. [2019-10-03 03:10:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 03:10:10,411 INFO L93 Difference]: Finished difference Result 39943 states and 46476 transitions. [2019-10-03 03:10:10,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 03:10:10,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-03 03:10:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 03:10:10,445 INFO L225 Difference]: With dead ends: 39943 [2019-10-03 03:10:10,446 INFO L226 Difference]: Without dead ends: 39943 [2019-10-03 03:10:10,446 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-03 03:10:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39943 states. [2019-10-03 03:10:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39943 to 31334. [2019-10-03 03:10:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31334 states. [2019-10-03 03:10:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31334 states to 31334 states and 36516 transitions. [2019-10-03 03:10:10,730 INFO L78 Accepts]: Start accepts. Automaton has 31334 states and 36516 transitions. Word has length 126 [2019-10-03 03:10:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 03:10:10,731 INFO L475 AbstractCegarLoop]: Abstraction has 31334 states and 36516 transitions. [2019-10-03 03:10:10,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 03:10:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 31334 states and 36516 transitions. [2019-10-03 03:10:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-03 03:10:10,737 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 03:10:10,737 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 03:10:10,737 INFO L418 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 03:10:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:10:10,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1725557824, now seen corresponding path program 1 times [2019-10-03 03:10:10,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 03:10:10,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:10,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:10:10,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 03:10:10,740 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 03:10:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:10:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:10:11,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:10:11,301 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 03:10:11,301 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2019-10-03 03:10:11,302 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [56], [59], [64], [67], [70], [73], [75], [77], [80], [83], [86], [89], [91], [93], [96], [99], [102], [105], [107], [109], [112], [115], [117], [120], [121], [123], [132], [143], [145], [148], [151], [154], [156], [158], [187], [190], [198], [201], [204], [207], [209], [211], [240], [243], [251], [253], [256], [259], [262], [264], [266], [295], [296], [300], [301], [302] [2019-10-03 03:10:11,303 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 03:10:11,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 03:10:11,308 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 03:10:11,833 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 03:10:11,834 INFO L272 AbstractInterpreter]: Visited 75 different actions 1058 times. Merged at 51 different actions 839 times. Widened at 20 different actions 188 times. Performed 3019 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3019 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 137 fixpoints after 21 different actions. Largest state had 96 variables. [2019-10-03 03:10:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 03:10:11,834 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 03:10:11,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 03:10:11,834 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 [2019-10-03 03:10:11,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 03:10:11,981 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-10-03 03:10:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 03:10:12,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-03 03:10:12,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 03:10:12,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:12,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:10:12,794 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 03:10:13,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:13,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:14,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 03:10:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 13 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 03:10:14,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 03:10:14,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 33 [2019-10-03 03:10:14,911 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 03:10:14,912 INFO L454 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-10-03 03:10:14,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-10-03 03:10:14,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2019-10-03 03:10:14,913 INFO L87 Difference]: Start difference. First operand 31334 states and 36516 transitions. Second operand 27 states. [2019-10-03 03:10:15,228 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2019-10-03 03:10:15,893 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-10-03 03:10:16,466 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-10-03 03:10:16,953 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2019-10-03 03:10:17,325 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2019-10-03 03:10:17,653 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2019-10-03 03:10:18,377 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2019-10-03 03:10:18,714 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-10-03 03:10:19,297 WARN L191 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2019-10-03 03:10:21,647 WARN L191 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2019-10-03 03:10:22,125 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2019-10-03 03:10:22,451 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2019-10-03 03:10:22,852 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2019-10-03 03:10:23,380 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2019-10-03 03:10:24,052 WARN L191 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2019-10-03 03:10:24,433 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-10-03 03:10:24,891 WARN L191 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2019-10-03 03:10:25,307 WARN L191 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2019-10-03 03:10:25,709 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2019-10-03 03:10:26,558 WARN L191 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2019-10-03 03:10:27,007 WARN L191 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2019-10-03 03:10:27,754 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2019-10-03 03:10:28,113 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2019-10-03 03:10:28,499 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2019-10-03 03:10:29,308 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2019-10-03 03:10:29,682 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2019-10-03 03:10:30,353 WARN L191 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2019-10-03 03:10:30,895 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2019-10-03 03:10:31,406 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2019-10-03 03:10:31,876 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2019-10-03 03:10:32,270 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2019-10-03 03:10:32,765 WARN L191 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2019-10-03 03:10:33,234 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2019-10-03 03:10:33,816 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2019-10-03 03:10:34,153 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2019-10-03 03:10:35,114 WARN L191 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 117 [2019-10-03 03:10:35,566 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-10-03 03:10:35,937 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2019-10-03 03:10:36,835 WARN L191 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-10-03 03:10:37,430 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2019-10-03 03:10:37,961 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-10-03 03:10:38,751 WARN L191 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2019-10-03 03:10:39,208 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2019-10-03 03:10:39,667 WARN L191 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-10-03 03:10:40,221 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2019-10-03 03:10:40,571 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2019-10-03 03:10:40,915 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2019-10-03 03:10:41,311 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-10-03 03:10:41,715 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2019-10-03 03:10:42,133 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2019-10-03 03:10:42,590 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2019-10-03 03:10:43,130 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2019-10-03 03:10:43,788 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2019-10-03 03:10:44,321 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2019-10-03 03:10:44,628 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-10-03 03:10:44,984 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-10-03 03:10:45,333 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2019-10-03 03:10:45,810 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2019-10-03 03:10:46,370 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2019-10-03 03:10:47,117 WARN L191 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2019-10-03 03:10:47,536 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2019-10-03 03:10:48,053 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2019-10-03 03:10:48,341 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2019-10-03 03:10:48,785 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2019-10-03 03:10:49,207 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2019-10-03 03:10:49,591 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2019-10-03 03:10:50,093 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2019-10-03 03:10:50,684 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2019-10-03 03:10:51,091 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 100 [2019-10-03 03:10:52,091 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2019-10-03 03:10:52,435 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-10-03 03:10:53,033 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2019-10-03 03:10:53,582 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2019-10-03 03:10:53,993 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2019-10-03 03:10:54,408 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2019-10-03 03:10:54,835 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-10-03 03:10:55,365 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-10-03 03:10:55,825 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:10:56,221 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2019-10-03 03:10:56,628 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2019-10-03 03:10:57,249 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2019-10-03 03:10:57,724 WARN L191 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2019-10-03 03:10:58,155 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2019-10-03 03:10:58,468 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-10-03 03:10:59,006 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2019-10-03 03:10:59,420 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2019-10-03 03:10:59,873 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-10-03 03:11:00,266 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2019-10-03 03:11:00,623 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2019-10-03 03:11:01,096 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2019-10-03 03:11:01,444 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2019-10-03 03:11:01,988 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2019-10-03 03:11:02,390 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2019-10-03 03:11:02,719 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-10-03 03:11:03,120 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-10-03 03:11:03,639 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-10-03 03:11:04,011 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-10-03 03:11:05,250 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:11:05,914 WARN L191 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-10-03 03:11:06,623 WARN L191 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2019-10-03 03:11:07,010 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2019-10-03 03:11:07,430 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2019-10-03 03:11:07,893 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2019-10-03 03:11:08,410 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:11:08,822 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-10-03 03:11:09,243 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-10-03 03:11:09,693 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2019-10-03 03:11:10,114 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-10-03 03:11:10,589 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 100 [2019-10-03 03:11:11,257 WARN L191 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2019-10-03 03:11:11,673 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-10-03 03:11:12,367 WARN L191 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2019-10-03 03:11:12,780 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-10-03 03:11:13,373 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2019-10-03 03:11:13,984 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2019-10-03 03:11:14,525 WARN L191 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2019-10-03 03:11:15,049 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2019-10-03 03:11:15,572 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2019-10-03 03:11:16,141 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2019-10-03 03:11:17,560 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2019-10-03 03:11:20,145 WARN L191 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2019-10-03 03:11:20,720 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-10-03 03:11:21,304 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2019-10-03 03:11:21,692 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-10-03 03:11:22,303 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2019-10-03 03:11:22,699 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2019-10-03 03:11:25,352 WARN L191 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2019-10-03 03:11:25,811 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2019-10-03 03:11:26,188 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2019-10-03 03:11:26,746 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2019-10-03 03:11:27,508 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2019-10-03 03:11:28,221 WARN L191 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2019-10-03 03:11:28,673 WARN L191 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2019-10-03 03:11:29,344 WARN L191 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2019-10-03 03:11:29,975 WARN L191 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2019-10-03 03:11:32,881 WARN L191 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2019-10-03 03:11:33,492 WARN L191 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2019-10-03 03:11:34,001 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2019-10-03 03:11:34,582 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2019-10-03 03:11:34,953 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-10-03 03:11:35,402 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2019-10-03 03:11:35,972 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2019-10-03 03:11:36,567 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2019-10-03 03:11:37,085 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2019-10-03 03:11:37,568 WARN L191 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2019-10-03 03:11:38,119 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-10-03 03:11:38,749 WARN L191 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2019-10-03 03:11:39,282 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2019-10-03 03:11:39,945 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2019-10-03 03:11:40,304 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-10-03 03:11:40,873 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2019-10-03 03:11:41,294 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2019-10-03 03:11:42,387 WARN L191 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2019-10-03 03:11:43,076 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2019-10-03 03:11:45,782 WARN L191 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2019-10-03 03:11:46,125 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2019-10-03 03:11:47,363 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2019-10-03 03:11:48,040 WARN L191 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2019-10-03 03:11:48,411 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2019-10-03 03:11:49,052 WARN L191 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2019-10-03 03:11:49,743 WARN L191 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2019-10-03 03:11:50,255 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 107 [2019-10-03 03:11:50,719 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2019-10-03 03:11:52,590 WARN L191 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:11:53,032 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2019-10-03 03:11:53,628 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2019-10-03 03:11:54,156 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2019-10-03 03:11:55,030 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2019-10-03 03:11:55,729 WARN L191 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2019-10-03 03:11:58,430 WARN L191 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2019-10-03 03:11:58,966 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2019-10-03 03:11:59,746 WARN L191 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2019-10-03 03:12:00,194 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2019-10-03 03:12:00,717 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2019-10-03 03:12:01,304 WARN L191 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2019-10-03 03:12:02,187 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2019-10-03 03:12:03,411 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2019-10-03 03:12:04,127 WARN L191 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2019-10-03 03:12:04,685 WARN L191 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2019-10-03 03:12:05,288 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2019-10-03 03:12:05,764 WARN L191 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 107 [2019-10-03 03:12:06,393 WARN L191 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2019-10-03 03:12:07,286 WARN L191 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 121 [2019-10-03 03:12:07,856 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:12:08,451 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-10-03 03:12:09,128 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2019-10-03 03:12:09,618 WARN L191 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2019-10-03 03:12:09,907 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-10-03 03:12:12,515 WARN L191 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2019-10-03 03:12:13,335 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2019-10-03 03:12:13,798 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2019-10-03 03:12:14,493 WARN L191 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2019-10-03 03:12:15,170 WARN L191 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2019-10-03 03:12:15,626 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2019-10-03 03:12:18,323 WARN L191 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 114 DAG size of output: 103 [2019-10-03 03:12:19,026 WARN L191 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2019-10-03 03:12:20,200 WARN L191 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2019-10-03 03:12:20,779 WARN L191 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2019-10-03 03:12:21,285 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2019-10-03 03:12:21,977 WARN L191 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2019-10-03 03:12:23,060 WARN L191 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2019-10-03 03:12:23,652 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2019-10-03 03:12:24,426 WARN L191 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2019-10-03 03:12:26,974 WARN L191 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2019-10-03 03:12:27,428 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-10-03 03:12:28,436 WARN L191 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2019-10-03 03:12:29,766 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2019-10-03 03:12:30,367 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2019-10-03 03:12:31,036 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2019-10-03 03:12:31,554 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2019-10-03 03:12:32,175 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2019-10-03 03:12:32,637 WARN L191 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2019-10-03 03:12:34,556 WARN L191 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2019-10-03 03:12:34,861 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2019-10-03 03:12:35,442 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2019-10-03 03:12:35,847 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2019-10-03 03:12:36,510 WARN L191 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 119 [2019-10-03 03:12:36,982 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2019-10-03 03:12:37,506 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2019-10-03 03:12:38,162 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 117 [2019-10-03 03:12:38,853 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2019-10-03 03:12:39,308 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-10-03 03:12:39,660 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-10-03 03:12:40,456 WARN L191 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 117 [2019-10-03 03:12:41,077 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2019-10-03 03:12:41,666 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2019-10-03 03:12:42,286 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2019-10-03 03:12:43,552 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 125 DAG size of output: 114 [2019-10-03 03:12:44,190 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2019-10-03 03:12:44,939 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2019-10-03 03:12:45,357 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2019-10-03 03:12:45,869 WARN L191 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:12:46,220 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-10-03 03:12:50,261 WARN L191 SmtUtils]: Spent 3.86 s on a formula simplification. DAG size of input: 128 DAG size of output: 117 [2019-10-03 03:12:50,965 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2019-10-03 03:12:52,529 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2019-10-03 03:12:53,069 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2019-10-03 03:12:53,637 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2019-10-03 03:12:54,246 WARN L191 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2019-10-03 03:12:54,629 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2019-10-03 03:12:57,471 WARN L191 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2019-10-03 03:12:57,988 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:12:58,570 WARN L191 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2019-10-03 03:12:59,022 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2019-10-03 03:12:59,456 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2019-10-03 03:12:59,874 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2019-10-03 03:13:00,396 WARN L191 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2019-10-03 03:13:00,939 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2019-10-03 03:13:01,695 WARN L191 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2019-10-03 03:13:02,318 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 114 [2019-10-03 03:13:02,836 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2019-10-03 03:13:03,318 WARN L191 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2019-10-03 03:13:03,685 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-10-03 03:13:04,420 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 107 [2019-10-03 03:13:05,127 WARN L191 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2019-10-03 03:13:05,528 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2019-10-03 03:13:06,476 WARN L191 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 102 [2019-10-03 03:13:06,996 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2019-10-03 03:13:07,483 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-10-03 03:13:08,259 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113 [2019-10-03 03:13:08,656 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 102 [2019-10-03 03:13:09,061 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2019-10-03 03:13:09,441 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-10-03 03:13:09,845 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2019-10-03 03:13:10,373 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2019-10-03 03:13:10,835 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2019-10-03 03:13:11,517 WARN L191 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2019-10-03 03:13:11,987 WARN L191 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2019-10-03 03:13:12,458 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2019-10-03 03:13:12,879 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2019-10-03 03:13:13,895 WARN L191 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 116 [2019-10-03 03:13:14,333 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2019-10-03 03:13:14,764 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2019-10-03 03:13:15,773 WARN L191 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2019-10-03 03:13:16,139 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2019-10-03 03:13:16,474 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-10-03 03:13:16,886 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2019-10-03 03:13:17,431 WARN L191 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-10-03 03:13:17,890 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2019-10-03 03:13:18,412 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2019-10-03 03:13:18,902 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2019-10-03 03:13:19,388 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2019-10-03 03:13:20,146 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2019-10-03 03:13:20,607 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2019-10-03 03:13:21,174 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2019-10-03 03:13:21,694 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2019-10-03 03:13:22,072 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2019-10-03 03:13:22,680 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2019-10-03 03:13:23,132 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2019-10-03 03:13:23,554 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-10-03 03:13:24,195 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2019-10-03 03:13:24,804 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2019-10-03 03:13:25,275 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2019-10-03 03:13:25,784 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2019-10-03 03:13:26,427 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2019-10-03 03:13:26,908 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2019-10-03 03:13:27,514 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2019-10-03 03:13:28,187 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 114 [2019-10-03 03:13:31,080 WARN L191 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2019-10-03 03:13:31,523 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2019-10-03 03:13:31,915 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2019-10-03 03:13:32,378 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2019-10-03 03:13:32,938 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2019-10-03 03:13:33,388 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2019-10-03 03:13:33,850 WARN L191 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2019-10-03 03:13:34,386 WARN L191 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2019-10-03 03:13:34,838 WARN L191 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2019-10-03 03:13:35,607 WARN L191 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2019-10-03 03:13:36,237 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2019-10-03 03:13:36,727 WARN L191 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2019-10-03 03:13:37,055 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2019-10-03 03:13:37,585 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2019-10-03 03:13:37,974 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-10-03 03:13:38,629 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2019-10-03 03:13:39,112 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2019-10-03 03:13:39,797 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2019-10-03 03:13:40,267 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2019-10-03 03:13:40,787 WARN L191 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2019-10-03 03:13:41,335 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96