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.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 07:47:21,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 07:47:21,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 07:47:21,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 07:47:21,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 07:47:21,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 07:47:21,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 07:47:21,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 07:47:21,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 07:47:21,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 07:47:21,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 07:47:21,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 07:47:21,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 07:47:21,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 07:47:21,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 07:47:21,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 07:47:21,329 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 07:47:21,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 07:47:21,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 07:47:21,330 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 07:47:21,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 07:47:21,331 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 07:47:21,331 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 07:47:21,331 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 07:47:21,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 07:47:21,331 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 07:47:21,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 07:47:21,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 07:47:21,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 07:47:21,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 07:47:21,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 07:47:21,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 07:47:21,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 07:47:21,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 07:47:21,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 07:47:21,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 07:47:21,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 07:47:21,334 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 07:47:21,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 07:47:21,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 07:47:21,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 07:47:21,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 07:47:21,335 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 07:47:21,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 07:47:21,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 07:47:21,336 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 07:47:21,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 07:47:21,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 07:47:21,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 07:47:21,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 07:47:21,390 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 07:47:21,391 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2019-09-10 07:47:21,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3c5cbbb/612b5bb0b9224ad183e25529ed79283f/FLAG95995f1e9 [2019-09-10 07:47:21,944 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 07:47:21,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2019-09-10 07:47:21,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3c5cbbb/612b5bb0b9224ad183e25529ed79283f/FLAG95995f1e9 [2019-09-10 07:47:22,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e3c5cbbb/612b5bb0b9224ad183e25529ed79283f [2019-09-10 07:47:22,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 07:47:22,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 07:47:22,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 07:47:22,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 07:47:22,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 07:47:22,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc34360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22, skipping insertion in model container [2019-09-10 07:47:22,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,325 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 07:47:22,368 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 07:47:22,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:47:22,641 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 07:47:22,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:47:22,841 INFO L192 MainTranslator]: Completed translation [2019-09-10 07:47:22,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22 WrapperNode [2019-09-10 07:47:22,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 07:47:22,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 07:47:22,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 07:47:22,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 07:47:22,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... [2019-09-10 07:47:22,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 07:47:22,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 07:47:22,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 07:47:22,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 07:47:22,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 07:47:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 07:47:23,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 07:47:23,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 07:47:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 07:47:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 07:47:23,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 07:47:23,023 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 07:47:23,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 07:47:23,023 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 07:47:23,023 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 07:47:23,024 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 07:47:23,024 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 07:47:23,024 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 07:47:23,025 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-10 07:47:23,025 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 07:47:23,026 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 07:47:23,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 07:47:23,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 07:47:23,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 07:47:23,592 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 07:47:23,594 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 07:47:23,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:47:23 BoogieIcfgContainer [2019-09-10 07:47:23,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 07:47:23,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 07:47:23,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 07:47:23,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 07:47:23,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 07:47:22" (1/3) ... [2019-09-10 07:47:23,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f815e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:47:23, skipping insertion in model container [2019-09-10 07:47:23,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:47:22" (2/3) ... [2019-09-10 07:47:23,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f815e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:47:23, skipping insertion in model container [2019-09-10 07:47:23,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:47:23" (3/3) ... [2019-09-10 07:47:23,610 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2019-09-10 07:47:23,622 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 07:47:23,643 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 07:47:23,661 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 07:47:23,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 07:47:23,697 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 07:47:23,697 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 07:47:23,697 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 07:47:23,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 07:47:23,698 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 07:47:23,698 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 07:47:23,698 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 07:47:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2019-09-10 07:47:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-10 07:47:23,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:23,730 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:23,733 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:23,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:23,739 INFO L82 PathProgramCache]: Analyzing trace with hash -808091589, now seen corresponding path program 1 times [2019-09-10 07:47:23,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:23,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:23,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:23,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:23,800 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:24,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:24,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:47:24,164 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:24,169 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:47:24,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:47:24,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,185 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2019-09-10 07:47:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:24,255 INFO L93 Difference]: Finished difference Result 130 states and 206 transitions. [2019-09-10 07:47:24,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:47:24,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-09-10 07:47:24,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:24,275 INFO L225 Difference]: With dead ends: 130 [2019-09-10 07:47:24,275 INFO L226 Difference]: Without dead ends: 122 [2019-09-10 07:47:24,278 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-09-10 07:47:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2019-09-10 07:47:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-10 07:47:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 173 transitions. [2019-09-10 07:47:24,349 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 173 transitions. Word has length 51 [2019-09-10 07:47:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:24,350 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 173 transitions. [2019-09-10 07:47:24,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:47:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 173 transitions. [2019-09-10 07:47:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-10 07:47:24,353 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:24,353 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:24,353 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:24,354 INFO L82 PathProgramCache]: Analyzing trace with hash 611188033, now seen corresponding path program 1 times [2019-09-10 07:47:24,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:24,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:24,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,357 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:24,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:24,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:47:24,489 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:24,491 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:47:24,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:47:24,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,492 INFO L87 Difference]: Start difference. First operand 120 states and 173 transitions. Second operand 3 states. [2019-09-10 07:47:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:24,535 INFO L93 Difference]: Finished difference Result 194 states and 288 transitions. [2019-09-10 07:47:24,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:47:24,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-10 07:47:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:24,539 INFO L225 Difference]: With dead ends: 194 [2019-09-10 07:47:24,539 INFO L226 Difference]: Without dead ends: 194 [2019-09-10 07:47:24,540 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-09-10 07:47:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2019-09-10 07:47:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2019-09-10 07:47:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 287 transitions. [2019-09-10 07:47:24,565 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 287 transitions. Word has length 52 [2019-09-10 07:47:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:24,566 INFO L475 AbstractCegarLoop]: Abstraction has 192 states and 287 transitions. [2019-09-10 07:47:24,566 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:47:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 287 transitions. [2019-09-10 07:47:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-10 07:47:24,568 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:24,569 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:24,569 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:24,569 INFO L82 PathProgramCache]: Analyzing trace with hash 253553889, now seen corresponding path program 1 times [2019-09-10 07:47:24,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:24,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:24,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,572 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:24,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:24,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:47:24,710 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:24,711 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:47:24,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:47:24,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,712 INFO L87 Difference]: Start difference. First operand 192 states and 287 transitions. Second operand 3 states. [2019-09-10 07:47:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:24,735 INFO L93 Difference]: Finished difference Result 322 states and 488 transitions. [2019-09-10 07:47:24,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:47:24,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-10 07:47:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:24,738 INFO L225 Difference]: With dead ends: 322 [2019-09-10 07:47:24,739 INFO L226 Difference]: Without dead ends: 322 [2019-09-10 07:47:24,739 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-09-10 07:47:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2019-09-10 07:47:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-09-10 07:47:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 487 transitions. [2019-09-10 07:47:24,773 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 487 transitions. Word has length 53 [2019-09-10 07:47:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:24,775 INFO L475 AbstractCegarLoop]: Abstraction has 320 states and 487 transitions. [2019-09-10 07:47:24,776 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:47:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 487 transitions. [2019-09-10 07:47:24,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-10 07:47:24,777 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:24,778 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:24,778 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:24,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1053117289, now seen corresponding path program 1 times [2019-09-10 07:47:24,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:24,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:24,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:24,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:24,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:47:24,900 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:24,901 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:47:24,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:47:24,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,902 INFO L87 Difference]: Start difference. First operand 320 states and 487 transitions. Second operand 3 states. [2019-09-10 07:47:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:24,923 INFO L93 Difference]: Finished difference Result 546 states and 832 transitions. [2019-09-10 07:47:24,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:47:24,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-09-10 07:47:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:24,927 INFO L225 Difference]: With dead ends: 546 [2019-09-10 07:47:24,928 INFO L226 Difference]: Without dead ends: 546 [2019-09-10 07:47:24,928 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2019-09-10 07:47:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2019-09-10 07:47:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-09-10 07:47:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 831 transitions. [2019-09-10 07:47:24,947 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 831 transitions. Word has length 54 [2019-09-10 07:47:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:24,947 INFO L475 AbstractCegarLoop]: Abstraction has 544 states and 831 transitions. [2019-09-10 07:47:24,948 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:47:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 831 transitions. [2019-09-10 07:47:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-10 07:47:24,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:24,949 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:24,949 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:24,950 INFO L82 PathProgramCache]: Analyzing trace with hash -935080225, now seen corresponding path program 1 times [2019-09-10 07:47:24,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:24,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:24,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:24,952 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:25,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:25,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:47:25,042 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:25,042 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:47:25,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:47:25,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:47:25,043 INFO L87 Difference]: Start difference. First operand 544 states and 831 transitions. Second operand 5 states. [2019-09-10 07:47:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:25,167 INFO L93 Difference]: Finished difference Result 544 states and 823 transitions. [2019-09-10 07:47:25,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:47:25,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-09-10 07:47:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:25,172 INFO L225 Difference]: With dead ends: 544 [2019-09-10 07:47:25,172 INFO L226 Difference]: Without dead ends: 544 [2019-09-10 07:47:25,172 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:47:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-09-10 07:47:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-09-10 07:47:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-09-10 07:47:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 823 transitions. [2019-09-10 07:47:25,188 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 823 transitions. Word has length 55 [2019-09-10 07:47:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:25,188 INFO L475 AbstractCegarLoop]: Abstraction has 544 states and 823 transitions. [2019-09-10 07:47:25,188 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:47:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 823 transitions. [2019-09-10 07:47:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-10 07:47:25,190 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:25,190 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:25,190 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:25,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1895815514, now seen corresponding path program 1 times [2019-09-10 07:47:25,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:25,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:25,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,192 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:25,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:25,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:47:25,269 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:25,270 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:47:25,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:47:25,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:47:25,271 INFO L87 Difference]: Start difference. First operand 544 states and 823 transitions. Second operand 5 states. [2019-09-10 07:47:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:25,379 INFO L93 Difference]: Finished difference Result 544 states and 815 transitions. [2019-09-10 07:47:25,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:47:25,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-09-10 07:47:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:25,383 INFO L225 Difference]: With dead ends: 544 [2019-09-10 07:47:25,383 INFO L226 Difference]: Without dead ends: 544 [2019-09-10 07:47:25,384 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:47:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-09-10 07:47:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-09-10 07:47:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-09-10 07:47:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 815 transitions. [2019-09-10 07:47:25,400 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 815 transitions. Word has length 55 [2019-09-10 07:47:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:25,400 INFO L475 AbstractCegarLoop]: Abstraction has 544 states and 815 transitions. [2019-09-10 07:47:25,401 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:47:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 815 transitions. [2019-09-10 07:47:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-10 07:47:25,402 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:25,402 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:25,402 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:25,403 INFO L82 PathProgramCache]: Analyzing trace with hash 53784981, now seen corresponding path program 1 times [2019-09-10 07:47:25,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:25,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:25,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,405 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:25,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:25,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 07:47:25,549 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:25,550 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 07:47:25,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 07:47:25,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:25,550 INFO L87 Difference]: Start difference. First operand 544 states and 815 transitions. Second operand 6 states. [2019-09-10 07:47:25,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:25,719 INFO L93 Difference]: Finished difference Result 2600 states and 3923 transitions. [2019-09-10 07:47:25,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:47:25,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-09-10 07:47:25,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:25,733 INFO L225 Difference]: With dead ends: 2600 [2019-09-10 07:47:25,733 INFO L226 Difference]: Without dead ends: 2600 [2019-09-10 07:47:25,733 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-09-10 07:47:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2019-09-10 07:47:25,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1056. [2019-09-10 07:47:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-09-10 07:47:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1567 transitions. [2019-09-10 07:47:25,780 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1567 transitions. Word has length 55 [2019-09-10 07:47:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:25,780 INFO L475 AbstractCegarLoop]: Abstraction has 1056 states and 1567 transitions. [2019-09-10 07:47:25,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 07:47:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1567 transitions. [2019-09-10 07:47:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-10 07:47:25,784 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:25,784 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:25,784 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:25,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:25,785 INFO L82 PathProgramCache]: Analyzing trace with hash -745433840, now seen corresponding path program 1 times [2019-09-10 07:47:25,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:25,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:25,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,787 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:25,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:25,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:47:25,854 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:25,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:47:25,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:47:25,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:25,855 INFO L87 Difference]: Start difference. First operand 1056 states and 1567 transitions. Second operand 3 states. [2019-09-10 07:47:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:25,881 INFO L93 Difference]: Finished difference Result 1556 states and 2274 transitions. [2019-09-10 07:47:25,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:47:25,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-09-10 07:47:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:25,890 INFO L225 Difference]: With dead ends: 1556 [2019-09-10 07:47:25,890 INFO L226 Difference]: Without dead ends: 1556 [2019-09-10 07:47:25,891 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:47:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2019-09-10 07:47:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1554. [2019-09-10 07:47:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2019-09-10 07:47:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2273 transitions. [2019-09-10 07:47:25,929 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2273 transitions. Word has length 57 [2019-09-10 07:47:25,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:25,930 INFO L475 AbstractCegarLoop]: Abstraction has 1554 states and 2273 transitions. [2019-09-10 07:47:25,930 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:47:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2273 transitions. [2019-09-10 07:47:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-10 07:47:25,931 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:25,931 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:25,931 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:25,932 INFO L82 PathProgramCache]: Analyzing trace with hash -725384497, now seen corresponding path program 1 times [2019-09-10 07:47:25,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:25,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:25,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:25,933 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:26,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:26,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 07:47:26,188 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:26,188 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 07:47:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 07:47:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:26,189 INFO L87 Difference]: Start difference. First operand 1554 states and 2273 transitions. Second operand 6 states. [2019-09-10 07:47:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:26,309 INFO L93 Difference]: Finished difference Result 3072 states and 4524 transitions. [2019-09-10 07:47:26,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:47:26,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-10 07:47:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:26,328 INFO L225 Difference]: With dead ends: 3072 [2019-09-10 07:47:26,328 INFO L226 Difference]: Without dead ends: 3072 [2019-09-10 07:47:26,329 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2019-09-10 07:47:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1554. [2019-09-10 07:47:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2019-09-10 07:47:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2249 transitions. [2019-09-10 07:47:26,415 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2249 transitions. Word has length 57 [2019-09-10 07:47:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:26,415 INFO L475 AbstractCegarLoop]: Abstraction has 1554 states and 2249 transitions. [2019-09-10 07:47:26,415 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 07:47:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2249 transitions. [2019-09-10 07:47:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-10 07:47:26,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:26,416 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:26,416 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:26,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1013992321, now seen corresponding path program 1 times [2019-09-10 07:47:26,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:26,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:26,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:26,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:26,420 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:26,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:26,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:47:26,507 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:26,507 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:47:26,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:47:26,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:47:26,508 INFO L87 Difference]: Start difference. First operand 1554 states and 2249 transitions. Second operand 5 states. [2019-09-10 07:47:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:26,568 INFO L93 Difference]: Finished difference Result 2934 states and 4191 transitions. [2019-09-10 07:47:26,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:47:26,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-09-10 07:47:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:26,583 INFO L225 Difference]: With dead ends: 2934 [2019-09-10 07:47:26,583 INFO L226 Difference]: Without dead ends: 2934 [2019-09-10 07:47:26,584 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2019-09-10 07:47:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1634. [2019-09-10 07:47:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2019-09-10 07:47:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2321 transitions. [2019-09-10 07:47:26,632 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2321 transitions. Word has length 58 [2019-09-10 07:47:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:26,633 INFO L475 AbstractCegarLoop]: Abstraction has 1634 states and 2321 transitions. [2019-09-10 07:47:26,633 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:47:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2321 transitions. [2019-09-10 07:47:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-10 07:47:26,635 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:26,635 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:26,635 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1387581406, now seen corresponding path program 1 times [2019-09-10 07:47:26,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:26,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:26,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:26,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:26,637 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:47:26,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:26,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 07:47:26,765 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:26,766 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 07:47:26,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 07:47:26,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:26,767 INFO L87 Difference]: Start difference. First operand 1634 states and 2321 transitions. Second operand 6 states. [2019-09-10 07:47:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:26,864 INFO L93 Difference]: Finished difference Result 3802 states and 5501 transitions. [2019-09-10 07:47:26,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:47:26,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-10 07:47:26,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:26,882 INFO L225 Difference]: With dead ends: 3802 [2019-09-10 07:47:26,883 INFO L226 Difference]: Without dead ends: 3802 [2019-09-10 07:47:26,884 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2019-09-10 07:47:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 2178. [2019-09-10 07:47:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2178 states. [2019-09-10 07:47:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 3121 transitions. [2019-09-10 07:47:26,949 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 3121 transitions. Word has length 80 [2019-09-10 07:47:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:26,949 INFO L475 AbstractCegarLoop]: Abstraction has 2178 states and 3121 transitions. [2019-09-10 07:47:26,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 07:47:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 3121 transitions. [2019-09-10 07:47:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-10 07:47:26,951 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:26,951 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:26,951 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:26,952 INFO L82 PathProgramCache]: Analyzing trace with hash 921047540, now seen corresponding path program 1 times [2019-09-10 07:47:26,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:26,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:26,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:26,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:26,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-10 07:47:27,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:27,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 07:47:27,133 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:27,134 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 07:47:27,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 07:47:27,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:27,136 INFO L87 Difference]: Start difference. First operand 2178 states and 3121 transitions. Second operand 6 states. [2019-09-10 07:47:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:27,342 INFO L93 Difference]: Finished difference Result 4346 states and 6293 transitions. [2019-09-10 07:47:27,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:47:27,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-10 07:47:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:27,367 INFO L225 Difference]: With dead ends: 4346 [2019-09-10 07:47:27,367 INFO L226 Difference]: Without dead ends: 4346 [2019-09-10 07:47:27,368 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-09-10 07:47:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2019-09-10 07:47:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 2986. [2019-09-10 07:47:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2986 states. [2019-09-10 07:47:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 4285 transitions. [2019-09-10 07:47:27,457 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 4285 transitions. Word has length 80 [2019-09-10 07:47:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:27,458 INFO L475 AbstractCegarLoop]: Abstraction has 2986 states and 4285 transitions. [2019-09-10 07:47:27,458 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 07:47:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 4285 transitions. [2019-09-10 07:47:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-10 07:47:27,460 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:27,460 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:27,461 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:27,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:27,464 INFO L82 PathProgramCache]: Analyzing trace with hash 897302318, now seen corresponding path program 1 times [2019-09-10 07:47:27,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:27,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:27,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:27,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:27,467 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:47:27,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:47:27,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 07:47:27,603 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:27,603 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 07:47:27,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 07:47:27,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:27,604 INFO L87 Difference]: Start difference. First operand 2986 states and 4285 transitions. Second operand 6 states. [2019-09-10 07:47:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:27,694 INFO L93 Difference]: Finished difference Result 5154 states and 7457 transitions. [2019-09-10 07:47:27,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:47:27,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-10 07:47:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:27,717 INFO L225 Difference]: With dead ends: 5154 [2019-09-10 07:47:27,717 INFO L226 Difference]: Without dead ends: 5154 [2019-09-10 07:47:27,717 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:47:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5154 states. [2019-09-10 07:47:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 3794. [2019-09-10 07:47:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3794 states. [2019-09-10 07:47:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 5449 transitions. [2019-09-10 07:47:27,805 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 5449 transitions. Word has length 80 [2019-09-10 07:47:27,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:27,806 INFO L475 AbstractCegarLoop]: Abstraction has 3794 states and 5449 transitions. [2019-09-10 07:47:27,806 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 07:47:27,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 5449 transitions. [2019-09-10 07:47:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-10 07:47:27,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:27,808 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:27,809 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:27,809 INFO L82 PathProgramCache]: Analyzing trace with hash 524776424, now seen corresponding path program 1 times [2019-09-10 07:47:27,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:27,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:27,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:27,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:27,811 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:27,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:47:27,895 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:47:27,896 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 81 with the following transitions: [2019-09-10 07:47:27,898 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [87], [89], [92], [95], [100], [102], [105], [113], [115], [118], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [171], [173], [176], [179], [181], [196], [198], [201], [204], [206], [214], [217], [223], [226], [229], [231], [246], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:47:27,952 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:47:27,952 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:47:28,070 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:47:28,739 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:47:28,742 INFO L272 AbstractInterpreter]: Visited 74 different actions 601 times. Merged at 44 different actions 459 times. Widened at 16 different actions 63 times. Performed 2201 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2201 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 59 fixpoints after 16 different actions. Largest state had 112 variables. [2019-09-10 07:47:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:28,749 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:47:28,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:47:28,749 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:47:28,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:28,780 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:47:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:28,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-10 07:47:28,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:47:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 07:47:28,987 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:47:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 07:47:29,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 07:47:29,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 11 [2019-09-10 07:47:29,065 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:47:29,066 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 07:47:29,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 07:47:29,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-09-10 07:47:29,067 INFO L87 Difference]: Start difference. First operand 3794 states and 5449 transitions. Second operand 6 states. [2019-09-10 07:47:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:29,169 INFO L93 Difference]: Finished difference Result 5962 states and 8621 transitions. [2019-09-10 07:47:29,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:47:29,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-10 07:47:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:29,184 INFO L225 Difference]: With dead ends: 5962 [2019-09-10 07:47:29,184 INFO L226 Difference]: Without dead ends: 5962 [2019-09-10 07:47:29,185 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-09-10 07:47:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2019-09-10 07:47:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 4602. [2019-09-10 07:47:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4602 states. [2019-09-10 07:47:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 6613 transitions. [2019-09-10 07:47:29,311 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 6613 transitions. Word has length 80 [2019-09-10 07:47:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:29,311 INFO L475 AbstractCegarLoop]: Abstraction has 4602 states and 6613 transitions. [2019-09-10 07:47:29,311 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 07:47:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 6613 transitions. [2019-09-10 07:47:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-10 07:47:29,314 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:29,314 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:29,314 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:29,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:29,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1732590227, now seen corresponding path program 1 times [2019-09-10 07:47:29,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:29,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:29,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:29,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:29,317 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:29,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:47:29,560 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:47:29,560 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 82 with the following transitions: [2019-09-10 07:47:29,561 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [87], [89], [92], [100], [102], [105], [113], [115], [118], [126], [128], [131], [134], [138], [140], [143], [144], [146], [148], [153], [155], [158], [171], [173], [176], [179], [181], [196], [198], [201], [204], [206], [221], [223], [226], [229], [231], [246], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:47:29,564 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:47:29,565 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:47:29,604 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:47:29,975 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:47:29,975 INFO L272 AbstractInterpreter]: Visited 74 different actions 679 times. Merged at 44 different actions 506 times. Widened at 20 different actions 86 times. Performed 2540 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2540 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 84 fixpoints after 22 different actions. Largest state had 112 variables. [2019-09-10 07:47:29,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:29,976 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:47:29,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:47:29,976 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) [2019-09-10 07:47:29,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:29,999 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:47:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:30,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-10 07:47:30,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:47:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:30,266 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:47:30,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:47:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:30,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:47:30,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 18 [2019-09-10 07:47:30,445 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:47:30,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-10 07:47:30,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-10 07:47:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-09-10 07:47:30,448 INFO L87 Difference]: Start difference. First operand 4602 states and 6613 transitions. Second operand 14 states. [2019-09-10 07:47:36,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:47:36,665 INFO L93 Difference]: Finished difference Result 36981 states and 50968 transitions. [2019-09-10 07:47:36,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2019-09-10 07:47:36,666 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2019-09-10 07:47:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:47:36,737 INFO L225 Difference]: With dead ends: 36981 [2019-09-10 07:47:36,737 INFO L226 Difference]: Without dead ends: 36981 [2019-09-10 07:47:36,741 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2080, Invalid=8840, Unknown=0, NotChecked=0, Total=10920 [2019-09-10 07:47:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36981 states. [2019-09-10 07:47:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36981 to 17422. [2019-09-10 07:47:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17422 states. [2019-09-10 07:47:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17422 states to 17422 states and 24301 transitions. [2019-09-10 07:47:37,336 INFO L78 Accepts]: Start accepts. Automaton has 17422 states and 24301 transitions. Word has length 81 [2019-09-10 07:47:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:47:37,336 INFO L475 AbstractCegarLoop]: Abstraction has 17422 states and 24301 transitions. [2019-09-10 07:47:37,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-10 07:47:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 17422 states and 24301 transitions. [2019-09-10 07:47:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-10 07:47:37,343 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:47:37,344 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:47:37,344 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:47:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:37,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1229707033, now seen corresponding path program 1 times [2019-09-10 07:47:37,344 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:47:37,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:37,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:37,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:47:37,347 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:47:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:37,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:47:37,596 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:47:37,596 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 83 with the following transitions: [2019-09-10 07:47:37,597 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [87], [89], [92], [95], [100], [102], [105], [113], [115], [118], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [171], [173], [176], [179], [181], [196], [198], [201], [204], [206], [214], [217], [223], [226], [229], [231], [239], [242], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:47:37,603 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:47:37,604 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:47:37,632 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:47:37,986 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:47:37,986 INFO L272 AbstractInterpreter]: Visited 76 different actions 489 times. Merged at 46 different actions 361 times. Widened at 14 different actions 42 times. Performed 1884 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1884 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 43 fixpoints after 12 different actions. Largest state had 112 variables. [2019-09-10 07:47:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:47:37,987 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:47:37,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:47:37,987 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:47:38,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:47:38,005 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:47:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:47:38,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 07:47:38,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:47:38,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:47:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:47:39,356 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:47:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 07:47:39,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:47:39,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2019-09-10 07:47:39,851 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:47:39,851 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-10 07:47:39,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-10 07:47:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2019-09-10 07:47:39,852 INFO L87 Difference]: Start difference. First operand 17422 states and 24301 transitions. Second operand 19 states. [2019-09-10 07:47:40,459 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 07:47:40,756 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 07:47:41,123 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 07:47:41,521 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 07:47:41,871 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-10 07:47:42,242 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 07:47:42,798 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 07:47:43,163 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 07:47:43,510 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 07:47:43,891 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 07:47:44,303 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-10 07:47:44,768 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-10 07:47:45,114 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-10 07:47:45,504 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:47:45,796 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 07:47:46,250 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 07:47:46,655 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-10 07:47:46,985 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 07:47:47,358 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-10 07:47:47,814 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-10 07:47:48,239 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 07:47:48,634 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 07:47:48,929 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 07:47:49,334 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 07:47:49,734 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-10 07:47:50,196 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-10 07:47:50,634 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 07:47:50,992 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 07:47:51,393 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:47:51,764 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 07:47:52,114 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-10 07:47:52,536 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 07:47:52,920 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 07:47:53,382 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 07:47:54,437 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-10 07:47:54,862 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-10 07:47:55,358 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 07:47:55,732 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 07:47:56,152 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-10 07:47:56,560 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 07:47:56,889 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-10 07:47:57,247 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-10 07:47:57,613 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-10 07:47:57,910 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 07:47:58,246 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 07:47:58,577 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 07:47:58,867 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 07:47:59,172 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-10 07:47:59,583 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 07:47:59,906 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:48:00,203 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-10 07:48:00,543 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 07:48:00,884 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 07:48:01,192 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 07:48:01,553 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 07:48:01,943 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 07:48:02,472 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 07:48:02,738 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:03,126 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:48:03,486 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 07:48:03,731 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 07:48:03,976 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:04,243 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 07:48:04,479 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:48:04,769 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:48:05,290 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-10 07:48:05,644 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-10 07:48:05,960 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 07:48:06,362 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-09-10 07:48:06,728 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-10 07:48:07,016 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 07:48:07,292 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:48:07,572 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-10 07:48:07,772 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:48:08,184 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-10 07:48:08,610 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2019-09-10 07:48:09,029 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-10 07:48:09,274 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:48:09,607 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:48:09,987 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-10 07:48:10,447 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-10 07:48:10,734 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:48:11,006 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:48:11,282 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:11,531 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 07:48:11,956 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-10 07:48:12,247 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 07:48:12,555 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 07:48:13,386 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-10 07:48:13,624 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-10 07:48:13,862 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-10 07:48:14,083 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:48:14,322 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-10 07:48:14,616 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 07:48:14,890 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:15,116 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:48:15,374 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:15,639 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:16,176 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-10 07:48:16,349 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 07:48:16,771 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-10 07:48:16,927 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 07:48:17,298 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 07:48:17,496 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:48:17,726 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:48:18,199 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:18,399 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:48:18,674 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-10 07:48:18,837 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 07:48:19,147 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:19,645 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-10 07:48:19,808 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 07:48:20,006 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 07:48:20,383 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:20,675 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:20,848 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 07:48:21,083 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:48:21,323 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:48:21,771 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 07:48:21,999 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:48:22,261 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:22,513 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:48:22,838 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 07:48:23,053 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:48:23,627 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-10 07:48:23,907 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:24,272 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 07:48:24,690 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:25,268 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-10 07:48:25,506 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:25,721 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:48:25,954 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:48:26,199 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:48:26,350 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 07:48:26,637 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 07:48:26,881 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:48:27,118 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 07:48:27,355 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-10 07:48:27,775 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 07:48:28,039 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:48:28,202 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 07:48:28,756 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-10 07:48:29,038 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-10 07:48:29,384 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 07:48:29,799 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 07:48:30,053 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:30,281 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:48:30,601 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-10 07:48:30,863 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 07:48:31,079 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:48:31,344 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:48:31,513 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 07:48:31,816 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 07:48:32,115 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-10 07:48:32,303 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-10 07:48:32,964 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:33,292 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-10 07:48:33,734 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-10 07:48:33,976 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:48:34,252 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-10 07:48:34,449 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 07:48:34,898 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-10 07:48:36,172 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 07:48:37,106 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 07:48:37,625 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 07:48:37,857 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 07:48:38,037 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 07:48:38,666 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 07:48:39,590 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-10 07:48:39,949 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-10 07:48:40,122 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-10 07:48:40,450 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 07:48:40,727 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 07:48:40,962 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 07:48:41,619 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:48:41,850 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:48:42,228 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:48:42,646 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 07:48:42,887 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:43,089 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 07:48:43,425 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 07:48:43,760 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:48:44,089 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 07:48:44,638 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-09-10 07:48:45,052 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 07:48:45,329 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-10 07:48:45,565 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:45,836 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-10 07:48:46,082 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:46,312 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:48:46,557 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:48:46,788 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:48:46,981 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-10 07:48:47,464 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 07:48:47,844 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 07:48:48,120 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:48,382 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:48,703 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:48,900 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:48:49,111 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:48:49,436 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 07:48:49,817 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 07:48:50,065 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:50,383 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:50,676 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:48:50,940 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:51,934 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 07:48:52,255 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-09-10 07:48:52,728 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-09-10 07:48:53,076 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-10 07:48:54,258 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:48:54,720 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-10 07:48:54,976 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:48:55,302 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 07:48:55,663 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-10 07:48:56,134 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 07:48:56,413 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:48:56,675 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:48:57,026 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-10 07:48:57,438 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-10 07:48:57,680 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:48:57,909 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:48:58,430 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:48:58,815 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 07:48:59,394 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 07:48:59,643 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:48:59,973 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 07:49:00,413 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-10 07:49:00,677 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-10 07:49:00,925 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:49:01,426 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:49:02,316 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 07:49:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:49:02,470 INFO L93 Difference]: Finished difference Result 146737 states and 200816 transitions. [2019-09-10 07:49:02,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2019-09-10 07:49:02,470 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 82 [2019-09-10 07:49:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:49:02,795 INFO L225 Difference]: With dead ends: 146737 [2019-09-10 07:49:02,795 INFO L226 Difference]: Without dead ends: 146737 [2019-09-10 07:49:02,823 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 133 SyntacticMatches, 15 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48043 ImplicationChecksByTransitivity, 72.7s TimeCoverageRelationStatistics Valid=15451, Invalid=85991, Unknown=0, NotChecked=0, Total=101442 [2019-09-10 07:49:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146737 states. [2019-09-10 07:49:05,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146737 to 42346. [2019-09-10 07:49:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42346 states. [2019-09-10 07:49:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42346 states to 42346 states and 59195 transitions. [2019-09-10 07:49:05,711 INFO L78 Accepts]: Start accepts. Automaton has 42346 states and 59195 transitions. Word has length 82 [2019-09-10 07:49:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:49:05,711 INFO L475 AbstractCegarLoop]: Abstraction has 42346 states and 59195 transitions. [2019-09-10 07:49:05,711 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-10 07:49:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42346 states and 59195 transitions. [2019-09-10 07:49:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-10 07:49:05,715 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:49:05,715 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:49:05,716 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:49:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash -678407881, now seen corresponding path program 1 times [2019-09-10 07:49:05,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:49:05,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:05,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:05,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:05,718 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:49:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 07:49:05,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:49:05,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:49:05,759 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:49:05,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:49:05,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:49:05,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:49:05,760 INFO L87 Difference]: Start difference. First operand 42346 states and 59195 transitions. Second operand 3 states. [2019-09-10 07:49:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:49:05,892 INFO L93 Difference]: Finished difference Result 28900 states and 40061 transitions. [2019-09-10 07:49:05,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:49:05,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-09-10 07:49:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:49:05,944 INFO L225 Difference]: With dead ends: 28900 [2019-09-10 07:49:05,945 INFO L226 Difference]: Without dead ends: 28900 [2019-09-10 07:49:05,946 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:49:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28900 states. [2019-09-10 07:49:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28900 to 28820. [2019-09-10 07:49:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28820 states. [2019-09-10 07:49:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28820 states to 28820 states and 39981 transitions. [2019-09-10 07:49:06,342 INFO L78 Accepts]: Start accepts. Automaton has 28820 states and 39981 transitions. Word has length 83 [2019-09-10 07:49:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:49:06,342 INFO L475 AbstractCegarLoop]: Abstraction has 28820 states and 39981 transitions. [2019-09-10 07:49:06,342 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:49:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 28820 states and 39981 transitions. [2019-09-10 07:49:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-10 07:49:06,348 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:49:06,349 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:49:06,350 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:49:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:06,350 INFO L82 PathProgramCache]: Analyzing trace with hash 2096755563, now seen corresponding path program 1 times [2019-09-10 07:49:06,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:49:06,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:06,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:06,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:06,361 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:49:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:06,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:49:06,619 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:49:06,620 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 84 with the following transitions: [2019-09-10 07:49:06,622 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [87], [89], [92], [95], [98], [100], [102], [105], [108], [113], [115], [118], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [171], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [223], [226], [229], [231], [239], [242], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:49:06,629 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:49:06,629 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:49:06,656 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:49:06,966 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:49:06,967 INFO L272 AbstractInterpreter]: Visited 77 different actions 607 times. Merged at 47 different actions 468 times. Widened at 15 different actions 63 times. Performed 2219 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2219 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 57 fixpoints after 15 different actions. Largest state had 112 variables. [2019-09-10 07:49:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:06,967 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:49:06,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:49:06,968 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:49:06,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:06,992 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:49:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:07,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-10 07:49:07,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:49:07,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:49:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:07,601 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:49:07,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:49:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:07,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:49:07,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 07:49:07,901 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:49:07,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 07:49:07,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 07:49:07,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-09-10 07:49:07,902 INFO L87 Difference]: Start difference. First operand 28820 states and 39981 transitions. Second operand 17 states. [2019-09-10 07:49:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:49:10,528 INFO L93 Difference]: Finished difference Result 159139 states and 216230 transitions. [2019-09-10 07:49:10,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-10 07:49:10,529 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2019-09-10 07:49:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:49:10,738 INFO L225 Difference]: With dead ends: 159139 [2019-09-10 07:49:10,739 INFO L226 Difference]: Without dead ends: 159139 [2019-09-10 07:49:10,739 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=808, Invalid=2272, Unknown=0, NotChecked=0, Total=3080 [2019-09-10 07:49:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159139 states. [2019-09-10 07:49:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159139 to 70104. [2019-09-10 07:49:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70104 states. [2019-09-10 07:49:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70104 states to 70104 states and 96870 transitions. [2019-09-10 07:49:13,780 INFO L78 Accepts]: Start accepts. Automaton has 70104 states and 96870 transitions. Word has length 83 [2019-09-10 07:49:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:49:13,780 INFO L475 AbstractCegarLoop]: Abstraction has 70104 states and 96870 transitions. [2019-09-10 07:49:13,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 07:49:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 70104 states and 96870 transitions. [2019-09-10 07:49:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-10 07:49:13,784 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:49:13,785 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:49:13,785 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:49:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:13,785 INFO L82 PathProgramCache]: Analyzing trace with hash -100457125, now seen corresponding path program 1 times [2019-09-10 07:49:13,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:49:13,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:13,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:13,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:13,787 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:49:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:13,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:49:13,980 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:49:13,980 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 84 with the following transitions: [2019-09-10 07:49:13,981 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [87], [89], [92], [95], [98], [100], [102], [105], [108], [113], [115], [118], [121], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [164], [167], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [223], [226], [229], [231], [246], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:49:13,983 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:49:13,983 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:49:13,997 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:49:14,261 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:49:14,262 INFO L272 AbstractInterpreter]: Visited 77 different actions 620 times. Merged at 47 different actions 478 times. Widened at 17 different actions 60 times. Performed 2156 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2156 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 57 fixpoints after 16 different actions. Largest state had 112 variables. [2019-09-10 07:49:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:14,262 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:49:14,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:49:14,263 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:49:14,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:14,277 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:49:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:14,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 07:49:14,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:49:14,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:49:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:14,606 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:49:14,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:49:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:14,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:49:14,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 07:49:14,862 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:49:14,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 07:49:14,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 07:49:14,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2019-09-10 07:49:14,865 INFO L87 Difference]: Start difference. First operand 70104 states and 96870 transitions. Second operand 17 states. [2019-09-10 07:49:18,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:49:18,211 INFO L93 Difference]: Finished difference Result 406463 states and 554031 transitions. [2019-09-10 07:49:18,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-10 07:49:18,211 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2019-09-10 07:49:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:49:18,625 INFO L225 Difference]: With dead ends: 406463 [2019-09-10 07:49:18,625 INFO L226 Difference]: Without dead ends: 406463 [2019-09-10 07:49:18,625 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=716, Invalid=2040, Unknown=0, NotChecked=0, Total=2756 [2019-09-10 07:49:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406463 states. [2019-09-10 07:49:21,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406463 to 147649. [2019-09-10 07:49:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147649 states. [2019-09-10 07:49:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147649 states to 147649 states and 202550 transitions. [2019-09-10 07:49:21,177 INFO L78 Accepts]: Start accepts. Automaton has 147649 states and 202550 transitions. Word has length 83 [2019-09-10 07:49:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:49:21,177 INFO L475 AbstractCegarLoop]: Abstraction has 147649 states and 202550 transitions. [2019-09-10 07:49:21,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 07:49:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 147649 states and 202550 transitions. [2019-09-10 07:49:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 07:49:21,184 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:49:21,184 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:49:21,184 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:49:21,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:21,185 INFO L82 PathProgramCache]: Analyzing trace with hash -91525643, now seen corresponding path program 1 times [2019-09-10 07:49:21,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:49:21,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:21,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:21,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:21,186 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:49:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:49:21,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:49:21,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:49:21,227 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:49:21,227 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:49:21,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:49:21,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:49:21,227 INFO L87 Difference]: Start difference. First operand 147649 states and 202550 transitions. Second operand 3 states. [2019-09-10 07:49:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:49:21,567 INFO L93 Difference]: Finished difference Result 123376 states and 167751 transitions. [2019-09-10 07:49:21,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:49:21,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-09-10 07:49:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:49:21,709 INFO L225 Difference]: With dead ends: 123376 [2019-09-10 07:49:21,710 INFO L226 Difference]: Without dead ends: 123376 [2019-09-10 07:49:21,710 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:49:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123376 states. [2019-09-10 07:49:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123376 to 123376. [2019-09-10 07:49:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123376 states. [2019-09-10 07:49:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123376 states to 123376 states and 167751 transitions. [2019-09-10 07:49:23,242 INFO L78 Accepts]: Start accepts. Automaton has 123376 states and 167751 transitions. Word has length 84 [2019-09-10 07:49:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:49:23,243 INFO L475 AbstractCegarLoop]: Abstraction has 123376 states and 167751 transitions. [2019-09-10 07:49:23,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:49:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 123376 states and 167751 transitions. [2019-09-10 07:49:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 07:49:23,248 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:49:23,248 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:49:23,248 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:49:23,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:23,249 INFO L82 PathProgramCache]: Analyzing trace with hash -474576096, now seen corresponding path program 1 times [2019-09-10 07:49:23,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:49:23,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:23,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:23,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:23,250 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:49:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:23,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:49:23,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:49:23,304 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:49:23,304 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:49:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:49:23,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:49:23,305 INFO L87 Difference]: Start difference. First operand 123376 states and 167751 transitions. Second operand 3 states. [2019-09-10 07:49:23,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:49:23,463 INFO L93 Difference]: Finished difference Result 66034 states and 90801 transitions. [2019-09-10 07:49:23,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:49:23,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-09-10 07:49:23,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:49:23,547 INFO L225 Difference]: With dead ends: 66034 [2019-09-10 07:49:23,547 INFO L226 Difference]: Without dead ends: 66034 [2019-09-10 07:49:23,548 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:49:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66034 states. [2019-09-10 07:49:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66034 to 51808. [2019-09-10 07:49:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51808 states. [2019-09-10 07:49:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51808 states to 51808 states and 70984 transitions. [2019-09-10 07:49:24,987 INFO L78 Accepts]: Start accepts. Automaton has 51808 states and 70984 transitions. Word has length 84 [2019-09-10 07:49:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:49:24,988 INFO L475 AbstractCegarLoop]: Abstraction has 51808 states and 70984 transitions. [2019-09-10 07:49:24,988 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:49:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 51808 states and 70984 transitions. [2019-09-10 07:49:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 07:49:24,993 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:49:24,994 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:49:24,994 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:49:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 261511392, now seen corresponding path program 1 times [2019-09-10 07:49:24,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:49:24,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:24,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:24,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:49:24,997 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:49:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:26,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:49:26,893 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:49:26,893 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 85 with the following transitions: [2019-09-10 07:49:26,893 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [98], [100], [102], [105], [108], [113], [115], [118], [121], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [164], [167], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [223], [226], [229], [231], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:49:26,898 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:49:26,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:49:26,911 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:49:27,285 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:49:27,286 INFO L272 AbstractInterpreter]: Visited 78 different actions 662 times. Merged at 48 different actions 518 times. Widened at 15 different actions 64 times. Performed 2360 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2360 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 60 fixpoints after 16 different actions. Largest state had 112 variables. [2019-09-10 07:49:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:49:27,287 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:49:27,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:49:27,287 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 [2019-09-10 07:49:27,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:49:27,312 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:49:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:49:27,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-10 07:49:27,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:49:27,770 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:49:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:29,508 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:49:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:49:30,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:49:30,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12, 12] total 45 [2019-09-10 07:49:30,247 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:49:30,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-10 07:49:30,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-10 07:49:30,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1839, Unknown=0, NotChecked=0, Total=1980 [2019-09-10 07:49:30,250 INFO L87 Difference]: Start difference. First operand 51808 states and 70984 transitions. Second operand 35 states. [2019-09-10 07:49:30,454 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-10 07:49:31,158 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2019-09-10 07:49:31,654 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 07:49:31,858 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-10 07:49:32,178 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 07:49:32,414 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 07:49:32,727 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-10 07:49:33,058 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2019-09-10 07:49:33,460 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2019-09-10 07:49:33,905 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2019-09-10 07:49:34,564 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 109 [2019-09-10 07:49:35,285 WARN L188 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 127 [2019-09-10 07:49:35,700 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2019-09-10 07:49:36,205 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 107 [2019-09-10 07:49:37,069 WARN L188 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 143 [2019-09-10 07:49:37,952 WARN L188 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 148 [2019-09-10 07:49:38,569 WARN L188 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 123 [2019-09-10 07:49:39,009 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2019-09-10 07:49:39,676 WARN L188 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 128 [2019-09-10 07:49:40,030 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-09-10 07:49:40,354 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 07:49:40,799 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2019-09-10 07:49:41,132 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 07:49:41,621 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:49:42,100 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:49:42,395 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 07:49:42,594 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 07:49:42,909 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-10 07:49:43,070 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 07:49:43,397 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:49:43,670 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:49:44,002 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-09-10 07:49:44,494 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:49:44,868 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:49:45,261 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2019-09-10 07:49:45,525 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 07:49:45,752 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 07:49:46,068 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-10 07:49:46,560 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-10 07:49:46,913 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-10 07:49:47,375 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-09-10 07:49:47,809 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2019-09-10 07:49:48,142 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 07:49:48,636 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:49:48,799 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2019-09-10 07:49:49,013 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 07:49:49,242 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-10 07:49:49,518 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 07:49:50,116 WARN L188 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 108 [2019-09-10 07:49:50,671 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 111 [2019-09-10 07:49:51,037 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:49:51,380 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-09-10 07:49:51,620 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2019-09-10 07:49:51,951 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2019-09-10 07:49:52,268 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 07:49:52,596 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 07:49:53,116 WARN L188 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 07:49:53,427 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-10 07:49:53,896 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-09-10 07:49:54,290 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-10 07:49:54,815 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:49:55,265 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-09-10 07:49:55,671 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2019-09-10 07:49:55,958 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 07:49:56,348 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:49:56,690 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:49:57,094 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2019-09-10 07:49:57,710 WARN L188 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 108 [2019-09-10 07:49:58,302 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 111 [2019-09-10 07:49:58,561 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 07:49:58,953 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:49:59,651 WARN L188 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-09-10 07:50:00,076 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-09-10 07:50:00,435 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-09-10 07:50:00,640 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 07:50:01,193 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2019-09-10 07:50:01,497 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 07:50:02,032 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:50:02,484 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:50:02,897 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2019-09-10 07:50:03,171 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 07:50:03,432 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-10 07:50:03,845 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-10 07:50:04,063 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 07:50:04,598 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 98 [2019-09-10 07:50:04,897 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:50:05,362 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2019-09-10 07:50:05,583 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:50:06,020 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2019-09-10 07:50:06,200 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:50:06,647 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2019-09-10 07:50:06,872 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 07:50:07,543 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 110 [2019-09-10 07:50:07,869 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2019-09-10 07:50:08,441 WARN L188 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 113 [2019-09-10 07:50:08,771 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2019-09-10 07:50:09,040 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 07:50:09,556 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-10 07:50:09,807 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 07:50:10,231 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2019-09-10 07:50:10,428 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:50:10,820 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2019-09-10 07:50:10,997 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-10 07:50:11,217 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-10 07:50:12,022 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2019-09-10 07:50:12,280 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-09-10 07:50:12,736 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2019-09-10 07:50:12,951 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-09-10 07:50:13,361 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 102 [2019-09-10 07:50:13,586 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2019-09-10 07:50:13,862 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 07:50:14,287 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 07:50:14,998 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:50:15,458 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 07:50:15,665 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:50:16,664 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-09-10 07:50:17,332 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2019-09-10 07:50:17,567 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 07:50:18,097 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-10 07:50:18,428 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 07:50:18,744 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:50:19,370 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:50:19,941 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2019-09-10 07:50:21,071 WARN L188 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2019-09-10 07:50:21,578 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2019-09-10 07:50:22,625 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 07:50:22,964 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2019-09-10 07:50:23,373 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 07:50:23,707 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-10 07:50:24,099 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 07:50:24,472 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 07:50:24,921 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 07:50:25,420 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2019-09-10 07:50:25,756 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 07:50:26,063 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 07:50:26,378 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 07:50:26,772 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2019-09-10 07:50:27,107 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 07:50:28,279 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2019-09-10 07:50:28,744 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-09-10 07:50:28,953 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-10 07:50:29,178 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-10 07:50:29,495 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 07:50:29,814 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-10 07:50:30,045 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 07:50:30,472 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2019-09-10 07:50:30,707 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-10 07:50:30,911 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-10 07:50:31,282 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:50:31,619 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-10 07:50:31,827 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 07:50:32,389 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2019-09-10 07:50:32,854 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2019-09-10 07:50:33,111 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-10 07:50:33,364 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:50:33,663 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-10 07:50:33,828 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:50:34,313 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-09-10 07:50:34,893 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 07:50:35,341 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2019-09-10 07:50:35,589 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:50:36,232 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2019-09-10 07:50:36,504 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 07:50:36,866 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2019-09-10 07:50:37,079 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:50:37,276 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 07:50:37,494 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-10 07:50:37,673 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 07:50:37,955 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 07:50:38,171 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-10 07:50:38,484 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-10 07:50:38,809 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2019-09-10 07:50:39,359 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2019-09-10 07:50:39,773 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:50:40,029 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 07:50:40,318 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2019-09-10 07:50:40,873 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 07:50:41,327 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2019-09-10 07:50:41,860 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:50:42,153 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-10 07:50:42,538 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2019-09-10 07:50:42,952 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 07:50:43,334 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 07:50:43,822 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 07:50:44,136 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2019-09-10 07:50:44,470 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-10 07:50:44,812 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-10 07:50:45,433 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2019-09-10 07:50:45,607 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-10 07:50:46,056 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:50:46,349 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-10 07:50:46,590 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 07:50:46,824 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 07:50:47,264 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-10 07:50:47,466 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-10 07:50:48,062 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 07:50:48,320 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 07:50:48,674 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 07:50:48,987 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 07:50:49,309 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-10 07:50:49,660 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-10 07:50:50,019 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-10 07:50:50,253 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 07:50:50,491 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 07:50:50,682 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 07:50:51,248 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 07:50:51,587 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 07:50:52,297 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-10 07:50:52,599 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-10 07:50:53,036 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2019-09-10 07:50:53,572 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2019-09-10 07:50:53,825 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 07:50:54,223 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2019-09-10 07:50:54,569 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 07:50:56,117 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2019-09-10 07:50:56,570 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 07:50:57,171 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 110 [2019-09-10 07:50:57,533 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-10 07:50:57,715 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:50:57,990 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2019-09-10 07:50:58,460 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2019-09-10 07:50:58,919 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-09-10 07:51:01,648 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2019-09-10 07:51:02,101 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2019-09-10 07:51:02,582 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 104 [2019-09-10 07:51:02,872 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 07:51:03,287 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2019-09-10 07:51:03,645 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2019-09-10 07:51:03,967 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2019-09-10 07:51:04,253 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2019-09-10 07:51:04,557 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:51:05,051 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-10 07:51:05,465 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2019-09-10 07:51:05,972 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2019-09-10 07:51:06,141 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 07:51:06,509 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2019-09-10 07:51:07,082 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 110 [2019-09-10 07:51:07,797 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 116 [2019-09-10 07:51:08,174 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2019-09-10 07:51:08,647 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 103 [2019-09-10 07:51:09,120 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-10 07:51:09,500 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:51:09,770 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 07:51:10,180 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2019-09-10 07:51:10,414 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-10 07:51:10,869 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-09-10 07:51:11,043 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 07:51:11,563 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 107 [2019-09-10 07:51:12,014 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2019-09-10 07:51:12,505 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 104 [2019-09-10 07:51:12,862 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 07:51:13,215 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-10 07:51:13,677 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 107 [2019-09-10 07:51:13,864 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 07:51:14,147 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 07:51:14,814 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 07:51:15,090 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:51:15,555 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2019-09-10 07:51:16,046 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2019-09-10 07:51:16,655 WARN L188 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 110 [2019-09-10 07:51:17,311 WARN L188 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 106 [2019-09-10 07:51:18,027 WARN L188 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 116 [2019-09-10 07:51:18,228 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:51:18,679 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-09-10 07:51:19,237 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 103 [2019-09-10 07:51:19,880 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 07:51:20,045 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:51:20,377 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:51:20,866 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-09-10 07:51:21,272 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 07:51:21,529 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 07:51:22,216 WARN L188 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 101 [2019-09-10 07:51:22,796 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2019-09-10 07:51:23,294 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 100 [2019-09-10 07:51:24,153 WARN L188 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 121 [2019-09-10 07:51:24,394 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 07:51:24,692 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:51:24,989 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-10 07:51:25,557 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-10 07:51:25,895 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 07:51:26,125 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-10 07:51:26,425 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 07:51:26,927 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-10 07:51:27,240 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-10 07:51:27,870 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 103 [2019-09-10 07:51:28,251 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-10 07:51:28,935 WARN L188 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 112 [2019-09-10 07:51:29,141 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-10 07:51:29,656 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2019-09-10 07:51:30,291 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 110 [2019-09-10 07:51:30,931 WARN L188 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 116 [2019-09-10 07:51:31,665 WARN L188 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 112 [2019-09-10 07:51:31,934 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-10 07:51:32,162 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:51:32,621 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-10 07:51:32,884 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 07:51:33,422 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2019-09-10 07:51:33,631 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 07:51:33,867 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:51:34,396 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-09-10 07:51:35,022 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 99 [2019-09-10 07:51:35,619 WARN L188 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 114 [2019-09-10 07:51:36,163 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2019-09-10 07:51:36,742 WARN L188 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 104 [2019-09-10 07:51:37,687 WARN L188 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 127 [2019-09-10 07:51:37,923 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 07:51:38,242 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-09-10 07:51:38,855 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 07:51:39,157 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:51:40,071 WARN L188 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 118 [2019-09-10 07:51:40,298 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-10 07:51:41,043 WARN L188 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 132 [2019-09-10 07:51:41,633 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 110 [2019-09-10 07:51:42,368 WARN L188 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 126 [2019-09-10 07:51:43,018 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 100 [2019-09-10 07:51:43,730 WARN L188 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 116 [2019-09-10 07:51:43,984 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:51:44,717 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 83 [2019-09-10 07:51:45,479 WARN L188 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 128 [2019-09-10 07:51:46,611 WARN L188 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 144 [2019-09-10 07:51:47,184 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 114 [2019-09-10 07:51:47,824 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 120 [2019-09-10 07:51:48,439 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 104 [2019-09-10 07:51:48,761 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-09-10 07:51:49,160 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 07:51:49,436 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 07:51:50,097 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 86 [2019-09-10 07:51:50,643 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 101 [2019-09-10 07:51:51,367 WARN L188 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 132 [2019-09-10 07:51:52,117 WARN L188 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 138 [2019-09-10 07:51:52,756 WARN L188 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 116 [2019-09-10 07:51:53,589 WARN L188 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 132 [2019-09-10 07:51:54,821 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2019-09-10 07:51:55,267 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 89 [2019-09-10 07:51:55,650 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-09-10 07:51:56,005 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-10 07:51:56,292 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:51:56,678 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2019-09-10 07:51:57,219 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 104 [2019-09-10 07:51:57,919 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2019-09-10 07:51:58,707 WARN L188 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 134 [2019-09-10 07:51:59,689 WARN L188 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 150 [2019-09-10 07:52:00,296 WARN L188 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 120 [2019-09-10 07:52:00,907 WARN L188 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 113 [2019-09-10 07:52:01,471 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 107 [2019-09-10 07:52:01,766 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 07:52:02,159 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 07:52:02,590 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2019-09-10 07:52:02,878 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 07:52:03,682 WARN L188 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 133 [2019-09-10 07:52:04,623 WARN L188 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 148 [2019-09-10 07:52:05,414 WARN L188 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 138 [2019-09-10 07:52:05,929 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:52:06,326 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2019-09-10 07:52:06,530 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-10 07:52:06,978 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-10 07:52:07,915 WARN L188 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 153 [2019-09-10 07:52:08,753 WARN L188 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 144 [2019-09-10 07:52:09,791 WARN L188 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 160 [2019-09-10 07:52:10,247 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-09-10 07:52:10,550 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 07:52:11,293 WARN L188 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 117 [2019-09-10 07:52:11,756 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-10 07:52:12,574 WARN L188 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 149 [2019-09-10 07:52:14,200 WARN L188 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 206 DAG size of output: 165 [2019-09-10 07:52:15,052 WARN L188 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 148 [2019-09-10 07:52:15,724 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-10 07:52:16,402 WARN L188 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 122 [2019-09-10 07:52:16,820 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:52:17,704 WARN L188 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 153 [2019-09-10 07:52:18,333 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 07:52:18,602 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-10 07:52:19,219 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-10 07:52:19,626 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2019-09-10 07:52:20,132 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-10 07:52:20,355 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 07:52:20,898 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:52:21,288 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-10 07:52:21,683 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-10 07:52:22,286 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 07:52:22,658 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:52:23,445 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:52:24,427 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-10 07:52:24,752 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-10 07:52:25,114 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-10 07:52:25,569 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2019-09-10 07:52:26,103 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:52:26,838 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:52:27,327 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2019-09-10 07:52:27,849 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2019-09-10 07:52:28,152 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 07:52:28,553 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2019-09-10 07:52:29,242 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2019-09-10 07:52:29,920 WARN L188 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 107 [2019-09-10 07:52:30,293 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2019-09-10 07:52:30,831 WARN L188 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2019-09-10 07:52:31,436 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-10 07:52:31,719 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-09-10 07:52:32,133 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 07:52:32,465 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:52:32,911 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2019-09-10 07:52:33,666 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2019-09-10 07:52:34,236 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2019-09-10 07:52:34,605 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 07:52:34,918 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 07:52:35,313 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2019-09-10 07:52:35,835 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2019-09-10 07:52:36,187 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 07:52:36,788 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 07:52:37,625 WARN L188 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 113 [2019-09-10 07:52:37,836 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 07:52:38,136 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-10 07:52:38,635 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 07:52:39,092 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2019-09-10 07:52:40,143 WARN L188 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2019-09-10 07:52:40,541 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2019-09-10 07:52:41,351 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2019-09-10 07:52:41,558 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-10 07:52:41,763 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-10 07:52:42,091 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2019-09-10 07:52:42,395 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 07:52:42,764 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:52:43,181 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-10 07:52:43,579 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:52:43,866 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:52:44,271 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2019-09-10 07:52:44,576 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-10 07:52:44,988 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2019-09-10 07:52:45,202 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-10 07:52:45,993 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 07:52:46,363 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 07:52:46,662 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 07:52:46,896 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 07:52:47,213 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-10 07:52:47,535 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2019-09-10 07:52:47,856 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2019-09-10 07:52:48,174 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-10 07:52:48,340 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:52:48,744 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-09-10 07:52:49,195 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-09-10 07:52:49,381 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-10 07:52:49,798 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2019-09-10 07:52:50,055 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-10 07:52:50,274 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-10 07:52:50,453 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:52:50,780 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2019-09-10 07:52:51,201 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:52:51,501 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2019-09-10 07:52:52,247 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:52:52,552 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 07:52:52,920 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-09-10 07:52:53,384 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2019-09-10 07:52:53,711 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 07:52:54,148 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2019-09-10 07:52:54,552 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 07:52:54,831 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:52:55,132 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-10 07:52:55,334 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 07:52:55,541 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-10 07:52:55,855 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-09-10 07:52:56,163 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:52:56,468 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-09-10 07:52:56,976 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2019-09-10 07:52:57,455 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-09-10 07:52:57,831 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 07:52:58,045 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 07:52:58,379 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 07:52:58,814 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-10 07:52:59,173 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 07:52:59,798 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2019-09-10 07:53:00,040 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:53:00,684 WARN L188 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2019-09-10 07:53:00,963 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-10 07:53:01,380 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2019-09-10 07:53:02,018 WARN L188 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 07:53:02,561 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-10 07:53:03,148 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2019-09-10 07:53:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:53:03,999 INFO L93 Difference]: Finished difference Result 540201 states and 728004 transitions. [2019-09-10 07:53:04,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 561 states. [2019-09-10 07:53:04,002 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 84 [2019-09-10 07:53:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:53:04,594 INFO L225 Difference]: With dead ends: 540201 [2019-09-10 07:53:04,594 INFO L226 Difference]: Without dead ends: 540201 [2019-09-10 07:53:04,608 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 140 SyntacticMatches, 10 SemanticMatches, 591 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158102 ImplicationChecksByTransitivity, 185.8s TimeCoverageRelationStatistics Valid=33766, Invalid=317290, Unknown=0, NotChecked=0, Total=351056 [2019-09-10 07:53:04,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540201 states. [2019-09-10 07:53:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540201 to 91374. [2019-09-10 07:53:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91374 states. [2019-09-10 07:53:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91374 states to 91374 states and 124945 transitions. [2019-09-10 07:53:11,080 INFO L78 Accepts]: Start accepts. Automaton has 91374 states and 124945 transitions. Word has length 84 [2019-09-10 07:53:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:53:11,080 INFO L475 AbstractCegarLoop]: Abstraction has 91374 states and 124945 transitions. [2019-09-10 07:53:11,080 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-10 07:53:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 91374 states and 124945 transitions. [2019-09-10 07:53:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 07:53:11,084 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:53:11,084 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:53:11,085 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:53:11,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:53:11,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1030764032, now seen corresponding path program 1 times [2019-09-10 07:53:11,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:53:11,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:11,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:53:11,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:11,087 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:53:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:53:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:11,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:53:11,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:53:11,147 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:53:11,147 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:53:11,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:53:11,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:53:11,148 INFO L87 Difference]: Start difference. First operand 91374 states and 124945 transitions. Second operand 3 states. [2019-09-10 07:53:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:53:11,259 INFO L93 Difference]: Finished difference Result 46188 states and 62055 transitions. [2019-09-10 07:53:11,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:53:11,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-09-10 07:53:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:53:11,311 INFO L225 Difference]: With dead ends: 46188 [2019-09-10 07:53:11,311 INFO L226 Difference]: Without dead ends: 46188 [2019-09-10 07:53:11,311 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:53:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46188 states. [2019-09-10 07:53:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46188 to 45118. [2019-09-10 07:53:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45118 states. [2019-09-10 07:53:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45118 states to 45118 states and 60986 transitions. [2019-09-10 07:53:11,812 INFO L78 Accepts]: Start accepts. Automaton has 45118 states and 60986 transitions. Word has length 84 [2019-09-10 07:53:11,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:53:11,812 INFO L475 AbstractCegarLoop]: Abstraction has 45118 states and 60986 transitions. [2019-09-10 07:53:11,812 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:53:11,812 INFO L276 IsEmpty]: Start isEmpty. Operand 45118 states and 60986 transitions. [2019-09-10 07:53:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-10 07:53:11,815 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:53:11,815 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:53:11,816 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:53:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:53:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash 436596032, now seen corresponding path program 1 times [2019-09-10 07:53:11,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:53:11,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:11,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:53:11,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:11,817 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:53:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:53:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:11,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:53:11,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:53:11,860 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:53:11,860 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:53:11,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:53:11,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:53:11,860 INFO L87 Difference]: Start difference. First operand 45118 states and 60986 transitions. Second operand 3 states. [2019-09-10 07:53:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:53:11,930 INFO L93 Difference]: Finished difference Result 27128 states and 36067 transitions. [2019-09-10 07:53:11,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:53:11,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-09-10 07:53:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:53:11,960 INFO L225 Difference]: With dead ends: 27128 [2019-09-10 07:53:11,960 INFO L226 Difference]: Without dead ends: 27128 [2019-09-10 07:53:11,961 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:53:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27128 states. [2019-09-10 07:53:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27128 to 27126. [2019-09-10 07:53:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27126 states. [2019-09-10 07:53:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27126 states to 27126 states and 36066 transitions. [2019-09-10 07:53:12,220 INFO L78 Accepts]: Start accepts. Automaton has 27126 states and 36066 transitions. Word has length 84 [2019-09-10 07:53:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:53:12,220 INFO L475 AbstractCegarLoop]: Abstraction has 27126 states and 36066 transitions. [2019-09-10 07:53:12,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:53:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 27126 states and 36066 transitions. [2019-09-10 07:53:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-10 07:53:12,222 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:53:12,222 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:53:12,222 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:53:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:53:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash -124089325, now seen corresponding path program 1 times [2019-09-10 07:53:12,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:53:12,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:12,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:53:12,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:12,224 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:53:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:53:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:13,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:53:13,367 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:53:13,367 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 86 with the following transitions: [2019-09-10 07:53:13,368 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [121], [124], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [160], [173], [176], [179], [181], [198], [201], [204], [206], [223], [226], [229], [231], [239], [242], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:53:13,369 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:53:13,369 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:53:13,383 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:53:13,645 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:53:13,645 INFO L272 AbstractInterpreter]: Visited 77 different actions 537 times. Merged at 47 different actions 406 times. Widened at 15 different actions 53 times. Performed 2017 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2017 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 48 fixpoints after 12 different actions. Largest state had 112 variables. [2019-09-10 07:53:13,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:53:13,645 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:53:13,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:53:13,646 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:53:13,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:53:13,671 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:53:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:53:13,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 07:53:13,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:53:14,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:53:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:14,497 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:53:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:15,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:53:15,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 11, 11] total 46 [2019-09-10 07:53:15,060 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:53:15,061 INFO L454 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-09-10 07:53:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-09-10 07:53:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1924, Unknown=0, NotChecked=0, Total=2070 [2019-09-10 07:53:15,061 INFO L87 Difference]: Start difference. First operand 27126 states and 36066 transitions. Second operand 37 states. [2019-09-10 07:53:15,364 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 07:53:17,463 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2019-09-10 07:53:17,647 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-10 07:53:17,891 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 07:53:18,148 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-10 07:53:18,496 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-10 07:53:18,840 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 07:53:19,610 WARN L188 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 86 [2019-09-10 07:53:20,128 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2019-09-10 07:53:20,319 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 07:53:20,605 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 07:53:20,896 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 07:53:21,214 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2019-09-10 07:53:21,474 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 07:53:21,749 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-10 07:53:22,153 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 07:53:22,449 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-10 07:53:22,837 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-10 07:53:23,765 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 07:53:24,486 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 07:53:24,792 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:53:25,051 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 07:53:25,511 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-10 07:53:25,802 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-10 07:53:26,063 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:53:26,427 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-10 07:53:27,032 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-10 07:53:27,341 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 07:53:27,632 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-10 07:53:28,014 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 07:53:28,277 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 07:53:28,605 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 07:53:29,036 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 07:53:29,429 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-10 07:53:29,731 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:53:30,203 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-10 07:53:30,516 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 07:53:30,903 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 07:53:31,280 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 07:53:31,623 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-09-10 07:53:32,107 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-10 07:53:32,310 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-10 07:53:32,663 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-10 07:53:33,096 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-09-10 07:53:33,280 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-10 07:53:33,590 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-10 07:53:34,067 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2019-09-10 07:53:34,263 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-10 07:53:35,193 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 07:53:35,518 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2019-09-10 07:53:36,048 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-10 07:53:36,834 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-10 07:53:37,127 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2019-09-10 07:53:37,730 WARN L188 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-09-10 07:53:38,024 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 07:53:38,699 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2019-09-10 07:53:39,049 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2019-09-10 07:53:39,530 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2019-09-10 07:53:40,193 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2019-09-10 07:53:40,607 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 07:53:41,052 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2019-09-10 07:53:41,308 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:53:41,815 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-10 07:53:42,153 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-10 07:53:42,527 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-10 07:53:42,795 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:53:43,134 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-10 07:53:43,674 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 107 [2019-09-10 07:53:43,844 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-09-10 07:53:44,155 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-10 07:53:44,590 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 07:53:45,395 WARN L188 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 117 [2019-09-10 07:53:45,982 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-10 07:53:46,171 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 07:53:46,396 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 07:53:46,981 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-10 07:53:47,594 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:53:48,123 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:53:48,422 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 07:53:48,705 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 07:53:49,037 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:53:49,264 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-10 07:53:49,464 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-10 07:53:49,710 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 07:53:49,893 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:53:51,150 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:53:51,368 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:53:51,626 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 07:53:51,851 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:53:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:53:52,122 INFO L93 Difference]: Finished difference Result 82513 states and 108955 transitions. [2019-09-10 07:53:52,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2019-09-10 07:53:52,123 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 85 [2019-09-10 07:53:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:53:52,195 INFO L225 Difference]: With dead ends: 82513 [2019-09-10 07:53:52,195 INFO L226 Difference]: Without dead ends: 82513 [2019-09-10 07:53:52,197 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10955 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=5665, Invalid=27641, Unknown=0, NotChecked=0, Total=33306 [2019-09-10 07:53:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82513 states. [2019-09-10 07:53:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82513 to 27190. [2019-09-10 07:53:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27190 states. [2019-09-10 07:53:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27190 states to 27190 states and 36164 transitions. [2019-09-10 07:53:52,884 INFO L78 Accepts]: Start accepts. Automaton has 27190 states and 36164 transitions. Word has length 85 [2019-09-10 07:53:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:53:52,884 INFO L475 AbstractCegarLoop]: Abstraction has 27190 states and 36164 transitions. [2019-09-10 07:53:52,884 INFO L476 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-09-10 07:53:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 27190 states and 36164 transitions. [2019-09-10 07:53:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-10 07:53:52,886 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:53:52,886 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:53:52,886 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:53:52,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:53:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1419219145, now seen corresponding path program 1 times [2019-09-10 07:53:52,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:53:52,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:52,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:53:52,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:52,888 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:53:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:53:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 07:53:52,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:53:52,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:53:52,936 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:53:52,936 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:53:52,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:53:52,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:53:52,937 INFO L87 Difference]: Start difference. First operand 27190 states and 36164 transitions. Second operand 3 states. [2019-09-10 07:53:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:53:53,040 INFO L93 Difference]: Finished difference Result 25122 states and 32917 transitions. [2019-09-10 07:53:53,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:53:53,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2019-09-10 07:53:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:53:53,072 INFO L225 Difference]: With dead ends: 25122 [2019-09-10 07:53:53,072 INFO L226 Difference]: Without dead ends: 25122 [2019-09-10 07:53:53,073 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:53:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25122 states. [2019-09-10 07:53:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25122 to 25122. [2019-09-10 07:53:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25122 states. [2019-09-10 07:53:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25122 states to 25122 states and 32917 transitions. [2019-09-10 07:53:53,394 INFO L78 Accepts]: Start accepts. Automaton has 25122 states and 32917 transitions. Word has length 85 [2019-09-10 07:53:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:53:53,394 INFO L475 AbstractCegarLoop]: Abstraction has 25122 states and 32917 transitions. [2019-09-10 07:53:53,394 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:53:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 25122 states and 32917 transitions. [2019-09-10 07:53:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-10 07:53:53,396 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:53:53,396 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:53:53,396 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:53:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:53:53,396 INFO L82 PathProgramCache]: Analyzing trace with hash 138842613, now seen corresponding path program 1 times [2019-09-10 07:53:53,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:53:53,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:53,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:53:53,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:53:53,398 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:53:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:53:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:54,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:53:54,420 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:53:54,420 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 87 with the following transitions: [2019-09-10 07:53:54,421 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [100], [102], [105], [108], [111], [113], [115], [118], [121], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [160], [164], [167], [173], [176], [179], [181], [198], [201], [204], [206], [214], [219], [223], [226], [229], [231], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:53:54,422 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:53:54,422 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:53:54,434 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:53:54,643 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:53:54,644 INFO L272 AbstractInterpreter]: Visited 78 different actions 503 times. Merged at 48 different actions 377 times. Widened at 12 different actions 36 times. Performed 1738 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1738 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 43 fixpoints after 13 different actions. Largest state had 112 variables. [2019-09-10 07:53:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:53:54,645 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:53:54,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:53:54,645 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:53:54,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:53:54,678 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:53:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:53:54,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 33 conjunts are in the unsatisfiable core [2019-09-10 07:53:54,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:53:55,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:53:55,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:53:55,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:53:56,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:53:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:58,033 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:53:58,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:53:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:53:58,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:53:58,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 15] total 44 [2019-09-10 07:53:58,947 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:53:58,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-09-10 07:53:58,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-09-10 07:53:58,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1723, Unknown=1, NotChecked=0, Total=1892 [2019-09-10 07:53:58,949 INFO L87 Difference]: Start difference. First operand 25122 states and 32917 transitions. Second operand 34 states. [2019-09-10 07:54:00,368 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-10 07:54:00,719 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2019-09-10 07:54:01,007 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2019-09-10 07:54:01,172 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2019-09-10 07:54:01,443 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2019-09-10 07:54:01,869 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 80 [2019-09-10 07:54:02,295 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 85 [2019-09-10 07:54:02,671 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 80 [2019-09-10 07:54:03,016 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-10 07:54:03,421 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 85 [2019-09-10 07:54:03,728 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-10 07:54:04,083 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-10 07:54:04,413 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-10 07:54:04,741 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2019-09-10 07:54:05,084 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2019-09-10 07:54:05,627 WARN L188 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-10 07:54:05,977 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2019-09-10 07:54:06,301 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2019-09-10 07:54:06,659 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-09-10 07:54:08,448 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-10 07:54:08,817 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2019-09-10 07:54:09,149 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2019-09-10 07:54:09,489 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2019-09-10 07:54:09,796 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:54:10,169 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-10 07:54:10,512 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2019-09-10 07:54:10,851 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-09-10 07:54:11,196 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2019-09-10 07:54:11,596 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2019-09-10 07:54:11,923 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 07:54:12,176 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 07:54:12,453 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-09-10 07:54:12,728 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-10 07:54:13,002 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-09-10 07:54:13,222 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 07:54:13,488 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-10 07:54:13,701 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-10 07:54:13,964 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2019-09-10 07:54:14,223 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2019-09-10 07:54:14,440 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 07:54:14,904 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2019-09-10 07:54:15,108 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2019-09-10 07:54:15,646 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 07:54:15,854 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-10 07:54:16,102 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2019-09-10 07:54:16,336 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2019-09-10 07:54:16,815 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-10 07:54:17,038 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2019-09-10 07:54:17,673 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 07:54:18,708 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-10 07:54:18,950 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2019-09-10 07:54:19,521 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2019-09-10 07:54:19,901 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2019-09-10 07:54:20,471 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2019-09-10 07:54:20,715 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-10 07:54:21,148 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-10 07:54:21,546 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-10 07:54:21,954 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 07:54:23,641 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-10 07:54:23,832 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-10 07:54:24,072 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-10 07:54:25,580 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 07:54:25,832 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2019-09-10 07:54:27,155 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2019-09-10 07:54:27,488 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-10 07:54:27,676 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-10 07:54:29,541 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-09-10 07:54:29,730 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2019-09-10 07:54:29,943 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2019-09-10 07:54:30,232 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2019-09-10 07:54:30,534 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2019-09-10 07:54:30,849 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2019-09-10 07:54:31,233 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-09-10 07:54:31,425 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2019-09-10 07:54:31,782 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2019-09-10 07:54:31,981 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 55 [2019-09-10 07:54:32,465 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-09-10 07:54:34,864 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2019-09-10 07:54:35,186 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 07:54:35,679 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2019-09-10 07:54:36,108 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-10 07:54:36,437 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 07:54:36,705 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-10 07:54:36,998 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-09-10 07:54:37,288 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 07:54:37,521 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-10 07:54:37,908 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2019-09-10 07:54:38,144 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-09-10 07:54:38,477 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2019-09-10 07:54:38,752 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-10 07:54:39,228 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-10 07:54:42,943 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2019-09-10 07:54:43,430 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2019-09-10 07:54:43,983 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2019-09-10 07:54:44,378 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 07:54:44,853 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 07:54:45,203 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-09-10 07:54:45,595 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 07:54:45,866 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-10 07:54:46,283 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-10 07:54:46,658 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-09-10 07:54:46,956 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2019-09-10 07:54:47,346 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-09-10 07:54:47,642 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2019-09-10 07:54:48,025 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2019-09-10 07:54:48,235 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-10 07:54:48,635 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2019-09-10 07:54:48,912 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2019-09-10 07:54:49,179 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-09-10 07:54:49,711 WARN L188 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 07:54:50,402 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2019-09-10 07:54:50,655 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 07:54:50,993 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-09-10 07:54:51,396 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2019-09-10 07:54:51,722 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2019-09-10 07:54:52,023 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-10 07:54:53,361 WARN L188 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-10 07:54:53,881 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2019-09-10 07:54:54,261 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2019-09-10 07:54:54,622 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2019-09-10 07:54:54,932 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2019-09-10 07:54:55,291 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:54:57,045 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2019-09-10 07:54:57,635 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2019-09-10 07:54:59,500 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2019-09-10 07:55:00,016 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-09-10 07:55:00,929 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2019-09-10 07:55:02,564 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-10 07:55:03,394 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2019-09-10 07:55:03,640 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 07:55:03,999 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 07:55:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:55:04,356 INFO L93 Difference]: Finished difference Result 90272 states and 117880 transitions. [2019-09-10 07:55:04,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2019-09-10 07:55:04,357 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 86 [2019-09-10 07:55:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:55:04,431 INFO L225 Difference]: With dead ends: 90272 [2019-09-10 07:55:04,431 INFO L226 Difference]: Without dead ends: 90272 [2019-09-10 07:55:04,433 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 141 SyntacticMatches, 8 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18711 ImplicationChecksByTransitivity, 49.9s TimeCoverageRelationStatistics Valid=7457, Invalid=43391, Unknown=2, NotChecked=0, Total=50850 [2019-09-10 07:55:04,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90272 states. [2019-09-10 07:55:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90272 to 26016. [2019-09-10 07:55:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26016 states. [2019-09-10 07:55:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26016 states to 26016 states and 34161 transitions. [2019-09-10 07:55:04,872 INFO L78 Accepts]: Start accepts. Automaton has 26016 states and 34161 transitions. Word has length 86 [2019-09-10 07:55:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:55:04,872 INFO L475 AbstractCegarLoop]: Abstraction has 26016 states and 34161 transitions. [2019-09-10 07:55:04,872 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-09-10 07:55:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 26016 states and 34161 transitions. [2019-09-10 07:55:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-10 07:55:04,873 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:55:04,873 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:55:04,874 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:55:04,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:04,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1597746910, now seen corresponding path program 1 times [2019-09-10 07:55:04,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:55:04,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:04,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:04,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:04,875 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:55:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 07:55:04,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:55:04,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:55:04,910 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:55:04,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:55:04,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:55:04,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:55:04,911 INFO L87 Difference]: Start difference. First operand 26016 states and 34161 transitions. Second operand 3 states. [2019-09-10 07:55:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:55:04,991 INFO L93 Difference]: Finished difference Result 16510 states and 21327 transitions. [2019-09-10 07:55:04,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:55:04,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-10 07:55:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:55:05,008 INFO L225 Difference]: With dead ends: 16510 [2019-09-10 07:55:05,008 INFO L226 Difference]: Without dead ends: 16510 [2019-09-10 07:55:05,008 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:55:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16510 states. [2019-09-10 07:55:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16510 to 16510. [2019-09-10 07:55:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16510 states. [2019-09-10 07:55:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16510 states to 16510 states and 21327 transitions. [2019-09-10 07:55:05,168 INFO L78 Accepts]: Start accepts. Automaton has 16510 states and 21327 transitions. Word has length 86 [2019-09-10 07:55:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:55:05,168 INFO L475 AbstractCegarLoop]: Abstraction has 16510 states and 21327 transitions. [2019-09-10 07:55:05,168 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:55:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16510 states and 21327 transitions. [2019-09-10 07:55:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-10 07:55:05,170 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:55:05,170 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:55:05,171 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:55:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:05,171 INFO L82 PathProgramCache]: Analyzing trace with hash 280308278, now seen corresponding path program 1 times [2019-09-10 07:55:05,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:55:05,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:05,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:05,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:05,173 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:55:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:06,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:06,415 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:55:06,415 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 88 with the following transitions: [2019-09-10 07:55:06,416 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [87], [89], [92], [95], [98], [100], [102], [105], [108], [113], [115], [118], [121], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [160], [164], [167], [173], [176], [179], [181], [189], [194], [198], [201], [204], [206], [223], [226], [229], [231], [239], [244], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:55:06,417 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:55:06,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:55:06,427 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:55:06,745 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:55:06,746 INFO L272 AbstractInterpreter]: Visited 79 different actions 644 times. Merged at 49 different actions 504 times. Widened at 14 different actions 62 times. Performed 2344 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2344 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 59 fixpoints after 13 different actions. Largest state had 112 variables. [2019-09-10 07:55:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:06,746 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:55:06,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:06,746 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:55:06,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:06,775 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:55:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:06,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-10 07:55:06,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:55:07,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:07,343 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:55:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:07,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:55:07,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 35 [2019-09-10 07:55:07,784 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:55:07,785 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 07:55:07,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 07:55:07,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2019-09-10 07:55:07,785 INFO L87 Difference]: Start difference. First operand 16510 states and 21327 transitions. Second operand 28 states. [2019-09-10 07:55:10,438 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2019-09-10 07:55:10,926 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2019-09-10 07:55:11,224 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2019-09-10 07:55:11,454 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:55:11,622 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-09-10 07:55:11,825 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-09-10 07:55:12,062 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:55:12,239 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2019-09-10 07:55:12,599 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 46 [2019-09-10 07:55:13,183 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2019-09-10 07:55:13,585 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-09-10 07:55:13,920 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2019-09-10 07:55:14,655 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2019-09-10 07:55:14,963 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2019-09-10 07:55:15,617 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:55:15,795 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2019-09-10 07:55:16,131 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-10 07:55:16,417 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:55:16,881 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-10 07:55:17,047 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2019-09-10 07:55:17,257 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 07:55:17,428 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-09-10 07:55:17,719 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2019-09-10 07:55:17,942 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-10 07:55:18,253 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2019-09-10 07:55:18,636 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2019-09-10 07:55:19,027 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2019-09-10 07:55:19,304 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-09-10 07:55:19,914 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2019-09-10 07:55:20,070 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:55:20,349 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2019-09-10 07:55:20,709 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 07:55:21,093 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2019-09-10 07:55:21,384 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2019-09-10 07:55:21,549 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2019-09-10 07:55:21,877 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 07:55:22,189 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2019-09-10 07:55:22,451 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2019-09-10 07:55:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:55:22,747 INFO L93 Difference]: Finished difference Result 27969 states and 35568 transitions. [2019-09-10 07:55:22,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-09-10 07:55:22,748 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 87 [2019-09-10 07:55:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:55:22,776 INFO L225 Difference]: With dead ends: 27969 [2019-09-10 07:55:22,777 INFO L226 Difference]: Without dead ends: 27969 [2019-09-10 07:55:22,778 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 157 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2335 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=2037, Invalid=7863, Unknown=0, NotChecked=0, Total=9900 [2019-09-10 07:55:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27969 states. [2019-09-10 07:55:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27969 to 16044. [2019-09-10 07:55:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16044 states. [2019-09-10 07:55:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16044 states to 16044 states and 20658 transitions. [2019-09-10 07:55:23,140 INFO L78 Accepts]: Start accepts. Automaton has 16044 states and 20658 transitions. Word has length 87 [2019-09-10 07:55:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:55:23,140 INFO L475 AbstractCegarLoop]: Abstraction has 16044 states and 20658 transitions. [2019-09-10 07:55:23,140 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 07:55:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 16044 states and 20658 transitions. [2019-09-10 07:55:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:55:23,142 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:55:23,142 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:55:23,142 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:55:23,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:23,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2099993150, now seen corresponding path program 1 times [2019-09-10 07:55:23,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:55:23,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:23,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:23,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:23,144 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:55:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:23,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:23,215 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:55:23,215 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:55:23,215 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [121], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [160], [164], [167], [173], [176], [179], [181], [198], [201], [204], [206], [223], [226], [229], [231], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:55:23,216 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:55:23,217 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:55:23,229 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:55:23,492 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:55:23,492 INFO L272 AbstractInterpreter]: Visited 77 different actions 595 times. Merged at 47 different actions 458 times. Widened at 14 different actions 55 times. Performed 2067 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2067 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 55 fixpoints after 18 different actions. Largest state had 112 variables. [2019-09-10 07:55:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:23,493 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:55:23,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:23,493 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) [2019-09-10 07:55:23,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:23,515 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:55:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:23,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 07:55:23,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:55:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:23,764 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:55:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:23,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:55:23,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2019-09-10 07:55:23,874 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:55:23,874 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 07:55:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 07:55:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-10 07:55:23,875 INFO L87 Difference]: Start difference. First operand 16044 states and 20658 transitions. Second operand 10 states. [2019-09-10 07:55:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:55:24,179 INFO L93 Difference]: Finished difference Result 15384 states and 19418 transitions. [2019-09-10 07:55:24,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 07:55:24,180 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2019-09-10 07:55:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:55:24,192 INFO L225 Difference]: With dead ends: 15384 [2019-09-10 07:55:24,192 INFO L226 Difference]: Without dead ends: 15384 [2019-09-10 07:55:24,193 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2019-09-10 07:55:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15384 states. [2019-09-10 07:55:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15384 to 13964. [2019-09-10 07:55:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13964 states. [2019-09-10 07:55:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13964 states to 13964 states and 17738 transitions. [2019-09-10 07:55:24,284 INFO L78 Accepts]: Start accepts. Automaton has 13964 states and 17738 transitions. Word has length 112 [2019-09-10 07:55:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:55:24,284 INFO L475 AbstractCegarLoop]: Abstraction has 13964 states and 17738 transitions. [2019-09-10 07:55:24,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 07:55:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 13964 states and 17738 transitions. [2019-09-10 07:55:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-10 07:55:24,289 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:55:24,289 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:55:24,289 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:55:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:24,290 INFO L82 PathProgramCache]: Analyzing trace with hash 300681773, now seen corresponding path program 1 times [2019-09-10 07:55:24,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:55:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:24,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:24,291 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:55:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:24,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:24,608 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:55:24,609 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2019-09-10 07:55:24,609 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [121], [124], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [171], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [221], [223], [226], [229], [231], [239], [242], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:55:24,611 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:55:24,612 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:55:24,622 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:55:25,077 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:55:25,078 INFO L272 AbstractInterpreter]: Visited 82 different actions 969 times. Merged at 52 different actions 732 times. Widened at 20 different actions 137 times. Performed 3428 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3428 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 136 fixpoints after 22 different actions. Largest state had 112 variables. [2019-09-10 07:55:25,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:25,078 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:55:25,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:25,078 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:55:25,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:25,094 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:55:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:25,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 07:55:25,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:55:25,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 32 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:25,747 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:55:25,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:25,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:28,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:29,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:55:29,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2019-09-10 07:55:29,060 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:55:29,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-10 07:55:29,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-10 07:55:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2019-09-10 07:55:29,060 INFO L87 Difference]: Start difference. First operand 13964 states and 17738 transitions. Second operand 20 states. [2019-09-10 07:55:29,558 WARN L188 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 07:55:29,925 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-10 07:55:30,083 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-10 07:55:30,508 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-10 07:55:30,743 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:55:31,076 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-10 07:55:31,525 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:55:31,796 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:55:32,046 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:55:32,381 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:55:32,710 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:55:33,270 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:55:33,560 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:55:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:55:33,597 INFO L93 Difference]: Finished difference Result 15769 states and 19926 transitions. [2019-09-10 07:55:33,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-10 07:55:33,598 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2019-09-10 07:55:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:55:33,611 INFO L225 Difference]: With dead ends: 15769 [2019-09-10 07:55:33,611 INFO L226 Difference]: Without dead ends: 15769 [2019-09-10 07:55:33,611 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 215 SyntacticMatches, 44 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=406, Invalid=1234, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 07:55:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15769 states. [2019-09-10 07:55:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15769 to 13964. [2019-09-10 07:55:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13964 states. [2019-09-10 07:55:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13964 states to 13964 states and 17614 transitions. [2019-09-10 07:55:33,709 INFO L78 Accepts]: Start accepts. Automaton has 13964 states and 17614 transitions. Word has length 136 [2019-09-10 07:55:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:55:33,710 INFO L475 AbstractCegarLoop]: Abstraction has 13964 states and 17614 transitions. [2019-09-10 07:55:33,710 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-10 07:55:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 13964 states and 17614 transitions. [2019-09-10 07:55:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-10 07:55:33,715 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:55:33,715 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:55:33,716 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:55:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash -169446285, now seen corresponding path program 1 times [2019-09-10 07:55:33,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:55:33,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:33,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:33,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:55:33,717 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:55:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:34,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:34,213 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:55:34,213 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2019-09-10 07:55:34,213 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [121], [124], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [171], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [214], [217], [223], [226], [229], [231], [246], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:55:34,215 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:55:34,215 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:55:34,223 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:55:34,874 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:55:34,875 INFO L272 AbstractInterpreter]: Visited 82 different actions 1178 times. Merged at 52 different actions 902 times. Widened at 22 different actions 187 times. Performed 3976 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3976 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 180 fixpoints after 22 different actions. Largest state had 112 variables. [2019-09-10 07:55:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:55:34,875 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:55:34,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:55:34,876 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:55:34,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:55:34,905 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:55:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:55:35,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 07:55:35,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:55:35,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:35,609 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:55:35,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:35,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:37,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:55:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 13 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:55:37,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:55:37,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 38 [2019-09-10 07:55:37,394 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:55:37,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 07:55:37,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 07:55:37,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1293, Unknown=0, NotChecked=0, Total=1406 [2019-09-10 07:55:37,396 INFO L87 Difference]: Start difference. First operand 13964 states and 17614 transitions. Second operand 28 states. [2019-09-10 07:55:37,770 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-10 07:55:38,601 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-10 07:55:39,082 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 07:55:39,542 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-10 07:55:39,957 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 07:55:40,349 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-10 07:55:40,756 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-10 07:55:41,118 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-10 07:55:41,491 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:55:41,815 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 07:55:42,121 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:55:42,576 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 07:55:43,181 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:55:43,498 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 07:55:43,806 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:55:44,703 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 07:55:45,070 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 07:55:45,380 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:55:45,762 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 07:55:46,273 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2019-09-10 07:55:46,624 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:55:46,956 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 07:55:47,258 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2019-09-10 07:55:47,546 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-09-10 07:55:48,107 WARN L188 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 07:55:48,836 WARN L188 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2019-09-10 07:55:49,289 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 07:55:49,547 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 07:55:49,809 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-10 07:55:50,029 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:55:50,379 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-09-10 07:55:50,807 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-10 07:55:51,212 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2019-09-10 07:55:51,642 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:55:52,179 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-10 07:55:52,696 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2019-09-10 07:55:53,322 WARN L188 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:55:53,693 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 07:55:54,105 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:55:54,547 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 07:55:55,396 WARN L188 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2019-09-10 07:55:55,830 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-10 07:55:56,125 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 07:55:56,575 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 07:55:57,292 WARN L188 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:55:57,812 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 07:55:58,347 WARN L188 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-10 07:55:58,788 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-10 07:55:59,220 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2019-09-10 07:55:59,577 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-10 07:55:59,948 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2019-09-10 07:56:00,278 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:56:00,657 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-10 07:56:00,914 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 07:56:01,634 WARN L188 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-09-10 07:56:01,892 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:56:02,370 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2019-09-10 07:56:02,670 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 07:56:03,226 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2019-09-10 07:56:04,140 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2019-09-10 07:56:04,618 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-10 07:56:05,042 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-10 07:56:05,408 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-09-10 07:56:05,879 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 07:56:06,374 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2019-09-10 07:56:07,074 WARN L188 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2019-09-10 07:56:07,536 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-09-10 07:56:08,016 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:56:08,395 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-10 07:56:08,849 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 07:56:09,353 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2019-09-10 07:56:10,362 WARN L188 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-09-10 07:56:11,005 WARN L188 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2019-09-10 07:56:11,610 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2019-09-10 07:56:12,043 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2019-09-10 07:56:12,832 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 07:56:13,217 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2019-09-10 07:56:13,564 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 07:56:14,185 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 07:56:14,520 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-09-10 07:56:14,931 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2019-09-10 07:56:15,259 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2019-09-10 07:56:15,635 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2019-09-10 07:56:16,249 WARN L188 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2019-09-10 07:56:16,628 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2019-09-10 07:56:16,930 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 07:56:17,287 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:56:17,738 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 07:56:18,234 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 07:56:18,534 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2019-09-10 07:56:19,307 WARN L188 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 07:56:19,668 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-09-10 07:56:19,951 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-10 07:56:20,332 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2019-09-10 07:56:20,895 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-10 07:56:21,497 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2019-09-10 07:56:21,826 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 07:56:22,236 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2019-09-10 07:56:23,024 WARN L188 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2019-09-10 07:56:23,384 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 07:56:23,791 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2019-09-10 07:56:24,140 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:56:24,499 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-09-10 07:56:24,983 WARN L188 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-09-10 07:56:25,305 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:56:25,655 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2019-09-10 07:56:26,065 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2019-09-10 07:56:26,443 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2019-09-10 07:56:27,003 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2019-09-10 07:56:27,336 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 07:56:27,888 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 07:56:28,580 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2019-09-10 07:56:28,893 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:56:29,225 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 07:56:29,707 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 07:56:30,003 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-10 07:56:30,425 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:56:30,769 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-09-10 07:56:31,125 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 07:56:31,533 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-09-10 07:56:31,820 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-10 07:56:32,176 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-10 07:56:32,587 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2019-09-10 07:56:33,095 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2019-09-10 07:56:33,428 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:56:33,877 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-09-10 07:56:34,259 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2019-09-10 07:56:34,904 WARN L188 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-10 07:56:35,201 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:56:35,495 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2019-09-10 07:56:35,925 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 07:56:36,194 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 07:56:36,581 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-09-10 07:56:37,255 WARN L188 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2019-09-10 07:56:37,651 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2019-09-10 07:56:38,003 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2019-09-10 07:56:38,543 WARN L188 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 07:56:41,195 WARN L188 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-09-10 07:56:41,715 WARN L188 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2019-09-10 07:56:42,050 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 07:56:42,532 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 07:56:42,902 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-09-10 07:56:44,069 WARN L188 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-09-10 07:56:44,427 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 07:56:44,702 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2019-09-10 07:56:45,023 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-10 07:56:45,404 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 07:56:45,817 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2019-09-10 07:56:46,173 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:56:46,449 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 07:56:46,866 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2019-09-10 07:56:47,252 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-10 07:56:47,883 WARN L188 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2019-09-10 07:56:48,191 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:56:48,758 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:56:49,197 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:56:49,544 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2019-09-10 07:56:50,206 WARN L188 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-10 07:56:52,700 WARN L188 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2019-09-10 07:56:53,126 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-10 07:56:53,723 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-10 07:56:54,425 WARN L188 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:56:54,934 WARN L188 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 07:56:55,732 WARN L188 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2019-09-10 07:56:56,186 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-10 07:56:56,703 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2019-09-10 07:56:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:56:56,845 INFO L93 Difference]: Finished difference Result 31872 states and 40139 transitions. [2019-09-10 07:56:56,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2019-09-10 07:56:56,846 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 136 [2019-09-10 07:56:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:56:56,872 INFO L225 Difference]: With dead ends: 31872 [2019-09-10 07:56:56,872 INFO L226 Difference]: Without dead ends: 31872 [2019-09-10 07:56:56,875 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 230 SyntacticMatches, 23 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15199 ImplicationChecksByTransitivity, 73.3s TimeCoverageRelationStatistics Valid=6676, Invalid=36380, Unknown=0, NotChecked=0, Total=43056 [2019-09-10 07:56:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31872 states. [2019-09-10 07:56:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31872 to 19208. [2019-09-10 07:56:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19208 states. [2019-09-10 07:56:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19208 states to 19208 states and 24230 transitions. [2019-09-10 07:56:57,050 INFO L78 Accepts]: Start accepts. Automaton has 19208 states and 24230 transitions. Word has length 136 [2019-09-10 07:56:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:56:57,050 INFO L475 AbstractCegarLoop]: Abstraction has 19208 states and 24230 transitions. [2019-09-10 07:56:57,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 07:56:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 19208 states and 24230 transitions. [2019-09-10 07:56:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-10 07:56:57,056 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:56:57,056 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:56:57,056 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:56:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:56:57,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1433554779, now seen corresponding path program 1 times [2019-09-10 07:56:57,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:56:57,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:56:57,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:56:57,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:56:57,058 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:56:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:56:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:56:57,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:56:57,336 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:56:57,336 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2019-09-10 07:56:57,336 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [121], [124], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [164], [167], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [223], [226], [229], [231], [246], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:56:57,337 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:56:57,337 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:56:57,348 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:56:57,643 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:56:57,644 INFO L272 AbstractInterpreter]: Visited 81 different actions 1037 times. Merged at 51 different actions 800 times. Widened at 21 different actions 141 times. Performed 3554 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3554 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 143 fixpoints after 23 different actions. Largest state had 112 variables. [2019-09-10 07:56:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:56:57,644 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:56:57,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:56:57,644 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:56:57,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:56:57,655 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:56:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:56:57,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 07:56:57,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:56:57,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 46 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:56:58,194 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:56:58,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:56:58,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:00,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:57:00,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:57:00,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2019-09-10 07:57:00,573 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:57:00,573 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-10 07:57:00,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-10 07:57:00,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2019-09-10 07:57:00,574 INFO L87 Difference]: Start difference. First operand 19208 states and 24230 transitions. Second operand 20 states. [2019-09-10 07:57:00,974 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 07:57:01,718 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-10 07:57:02,408 WARN L188 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-10 07:57:02,753 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:57:03,476 WARN L188 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 07:57:03,945 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:57:04,306 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:57:04,633 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:57:04,891 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:57:05,251 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:57:05,595 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:57:06,062 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:57:06,501 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:57:06,807 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-10 07:57:07,066 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:57:07,449 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:57:07,897 WARN L188 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:57:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:57:07,913 INFO L93 Difference]: Finished difference Result 26102 states and 32643 transitions. [2019-09-10 07:57:07,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-10 07:57:07,914 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 137 [2019-09-10 07:57:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:57:07,934 INFO L225 Difference]: With dead ends: 26102 [2019-09-10 07:57:07,934 INFO L226 Difference]: Without dead ends: 26102 [2019-09-10 07:57:07,935 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 235 SyntacticMatches, 26 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=562, Invalid=1508, Unknown=0, NotChecked=0, Total=2070 [2019-09-10 07:57:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26102 states. [2019-09-10 07:57:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26102 to 19072. [2019-09-10 07:57:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19072 states. [2019-09-10 07:57:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19072 states to 19072 states and 23894 transitions. [2019-09-10 07:57:08,328 INFO L78 Accepts]: Start accepts. Automaton has 19072 states and 23894 transitions. Word has length 137 [2019-09-10 07:57:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:57:08,329 INFO L475 AbstractCegarLoop]: Abstraction has 19072 states and 23894 transitions. [2019-09-10 07:57:08,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-10 07:57:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19072 states and 23894 transitions. [2019-09-10 07:57:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-10 07:57:08,334 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:57:08,334 INFO L399 BasicCegarLoop]: trace histogram [4, 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, 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] [2019-09-10 07:57:08,334 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:57:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:57:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1491501887, now seen corresponding path program 1 times [2019-09-10 07:57:08,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:57:08,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:08,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:57:08,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:08,336 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:57:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:57:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 88 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-10 07:57:08,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:57:08,406 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:57:08,406 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2019-09-10 07:57:08,406 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [171], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [223], [226], [229], [231], [239], [242], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:57:08,408 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:57:08,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:57:08,419 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:57:08,677 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:57:08,678 INFO L272 AbstractInterpreter]: Visited 79 different actions 817 times. Merged at 49 different actions 629 times. Widened at 19 different actions 116 times. Performed 2935 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2935 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 103 fixpoints after 19 different actions. Largest state had 112 variables. [2019-09-10 07:57:08,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:57:08,678 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:57:08,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:57:08,678 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:57:08,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:57:08,689 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:57:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:57:08,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 07:57:08,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:57:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 43 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-10 07:57:08,864 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:57:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 43 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-10 07:57:08,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:57:08,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2019-09-10 07:57:08,926 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:57:08,926 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 07:57:08,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 07:57:08,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-10 07:57:08,927 INFO L87 Difference]: Start difference. First operand 19072 states and 23894 transitions. Second operand 10 states. [2019-09-10 07:57:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:57:09,254 INFO L93 Difference]: Finished difference Result 17735 states and 21933 transitions. [2019-09-10 07:57:09,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 07:57:09,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2019-09-10 07:57:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:57:09,268 INFO L225 Difference]: With dead ends: 17735 [2019-09-10 07:57:09,268 INFO L226 Difference]: Without dead ends: 17735 [2019-09-10 07:57:09,269 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2019-09-10 07:57:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17735 states. [2019-09-10 07:57:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17735 to 15735. [2019-09-10 07:57:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15735 states. [2019-09-10 07:57:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15735 states to 15735 states and 19426 transitions. [2019-09-10 07:57:09,379 INFO L78 Accepts]: Start accepts. Automaton has 15735 states and 19426 transitions. Word has length 137 [2019-09-10 07:57:09,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:57:09,379 INFO L475 AbstractCegarLoop]: Abstraction has 15735 states and 19426 transitions. [2019-09-10 07:57:09,379 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 07:57:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 15735 states and 19426 transitions. [2019-09-10 07:57:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-10 07:57:09,384 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:57:09,384 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:57:09,384 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:57:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:57:09,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1804471046, now seen corresponding path program 1 times [2019-09-10 07:57:09,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:57:09,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:09,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:57:09,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:09,386 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:57:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:57:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-10 07:57:09,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:57:09,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:57:09,452 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:57:09,453 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:57:09,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:57:09,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:57:09,453 INFO L87 Difference]: Start difference. First operand 15735 states and 19426 transitions. Second operand 3 states. [2019-09-10 07:57:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:57:09,491 INFO L93 Difference]: Finished difference Result 8606 states and 10545 transitions. [2019-09-10 07:57:09,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:57:09,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-09-10 07:57:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:57:09,499 INFO L225 Difference]: With dead ends: 8606 [2019-09-10 07:57:09,500 INFO L226 Difference]: Without dead ends: 8606 [2019-09-10 07:57:09,500 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:57:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8606 states. [2019-09-10 07:57:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8606 to 8604. [2019-09-10 07:57:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8604 states. [2019-09-10 07:57:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8604 states to 8604 states and 10544 transitions. [2019-09-10 07:57:09,575 INFO L78 Accepts]: Start accepts. Automaton has 8604 states and 10544 transitions. Word has length 137 [2019-09-10 07:57:09,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:57:09,575 INFO L475 AbstractCegarLoop]: Abstraction has 8604 states and 10544 transitions. [2019-09-10 07:57:09,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:57:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8604 states and 10544 transitions. [2019-09-10 07:57:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-10 07:57:09,580 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:57:09,580 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:57:09,580 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:57:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:57:09,581 INFO L82 PathProgramCache]: Analyzing trace with hash 571240160, now seen corresponding path program 1 times [2019-09-10 07:57:09,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:57:09,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:09,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:57:09,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:09,582 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:57:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:57:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:57:10,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:57:10,540 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:57:10,541 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 139 with the following transitions: [2019-09-10 07:57:10,541 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [121], [124], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [164], [167], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [223], [226], [229], [231], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:57:10,543 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:57:10,543 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:57:10,553 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:57:10,905 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:57:10,905 INFO L272 AbstractInterpreter]: Visited 80 different actions 1138 times. Merged at 50 different actions 899 times. Widened at 17 different actions 182 times. Performed 3982 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3982 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 153 fixpoints after 23 different actions. Largest state had 112 variables. [2019-09-10 07:57:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:57:10,905 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:57:10,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:57:10,906 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:57:10,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:57:10,922 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:57:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:57:11,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 47 conjunts are in the unsatisfiable core [2019-09-10 07:57:11,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:57:11,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:12,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:12,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:12,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:12,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:12,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:57:14,216 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:57:15,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:15,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:16,386 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2019-09-10 07:57:16,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:16,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:16,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:17,125 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2019-09-10 07:57:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:57:17,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:57:17,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 77 [2019-09-10 07:57:17,976 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:57:17,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-09-10 07:57:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-09-10 07:57:17,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=5540, Unknown=1, NotChecked=0, Total=5852 [2019-09-10 07:57:17,978 INFO L87 Difference]: Start difference. First operand 8604 states and 10544 transitions. Second operand 52 states. [2019-09-10 07:57:18,519 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2019-09-10 07:57:20,506 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2019-09-10 07:57:20,783 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 07:57:21,104 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-10 07:57:21,405 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-10 07:57:21,741 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2019-09-10 07:57:22,086 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2019-09-10 07:57:22,362 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-10 07:57:22,642 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-10 07:57:22,985 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 07:57:23,726 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-10 07:57:26,867 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-10 07:57:29,225 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-10 07:57:29,848 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-10 07:57:30,245 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-09-10 07:57:30,588 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:57:30,945 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2019-09-10 07:57:32,922 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-10 07:57:33,459 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2019-09-10 07:57:33,635 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2019-09-10 07:57:33,949 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2019-09-10 07:57:37,613 WARN L188 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-09-10 07:57:40,924 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-09-10 07:57:43,603 WARN L188 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2019-09-10 07:57:44,611 WARN L188 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-09-10 07:57:45,597 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-09-10 07:57:45,915 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2019-09-10 07:57:46,298 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-10 07:57:46,774 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-09-10 07:57:47,785 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-09-10 07:57:51,358 WARN L188 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-09-10 07:57:51,681 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-09-10 07:57:51,993 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-10 07:57:52,627 WARN L188 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-09-10 07:57:55,545 WARN L188 SmtUtils]: Spent 2.76 s on a formula simplification that was a NOOP. DAG size: 36 [2019-09-10 07:57:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:57:55,735 INFO L93 Difference]: Finished difference Result 21726 states and 26570 transitions. [2019-09-10 07:57:55,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2019-09-10 07:57:55,735 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 138 [2019-09-10 07:57:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:57:55,753 INFO L225 Difference]: With dead ends: 21726 [2019-09-10 07:57:55,753 INFO L226 Difference]: Without dead ends: 21726 [2019-09-10 07:57:55,754 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9665 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=3001, Invalid=34440, Unknown=1, NotChecked=0, Total=37442 [2019-09-10 07:57:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21726 states. [2019-09-10 07:57:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21726 to 13038. [2019-09-10 07:57:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13038 states. [2019-09-10 07:57:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13038 states to 13038 states and 15938 transitions. [2019-09-10 07:57:55,862 INFO L78 Accepts]: Start accepts. Automaton has 13038 states and 15938 transitions. Word has length 138 [2019-09-10 07:57:55,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:57:55,862 INFO L475 AbstractCegarLoop]: Abstraction has 13038 states and 15938 transitions. [2019-09-10 07:57:55,862 INFO L476 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-09-10 07:57:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 13038 states and 15938 transitions. [2019-09-10 07:57:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-10 07:57:55,866 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:57:55,866 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:57:55,866 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:57:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:57:55,866 INFO L82 PathProgramCache]: Analyzing trace with hash -960711170, now seen corresponding path program 1 times [2019-09-10 07:57:55,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:57:55,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:55,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:57:55,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:57:55,867 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:57:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:57:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:57:56,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:57:56,291 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:57:56,291 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2019-09-10 07:57:56,291 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [85], [87], [89], [92], [95], [100], [102], [105], [108], [111], [113], [115], [118], [121], [124], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [164], [167], [173], [176], [179], [181], [198], [201], [204], [206], [214], [217], [219], [223], [226], [229], [231], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:57:56,293 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:57:56,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:57:56,307 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:57:56,637 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:57:56,638 INFO L272 AbstractInterpreter]: Visited 80 different actions 958 times. Merged at 49 different actions 751 times. Widened at 18 different actions 126 times. Performed 3270 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3270 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 120 fixpoints after 20 different actions. Largest state had 112 variables. [2019-09-10 07:57:56,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:57:56,638 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:57:56,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:57:56,638 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:57:56,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:57:56,648 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:57:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:57:56,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 36 conjunts are in the unsatisfiable core [2019-09-10 07:57:56,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:57:56,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:57,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:57,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:57:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:57:57,705 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:57:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:57:58,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:57:58,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 48 [2019-09-10 07:57:58,837 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:57:58,837 INFO L454 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-09-10 07:57:58,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-09-10 07:57:58,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2117, Unknown=0, NotChecked=0, Total=2256 [2019-09-10 07:57:58,838 INFO L87 Difference]: Start difference. First operand 13038 states and 15938 transitions. Second operand 33 states. [2019-09-10 07:58:02,584 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-10 07:58:02,801 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 07:58:03,099 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 07:58:03,417 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 07:58:03,906 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-10 07:58:04,160 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 07:58:04,511 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:58:04,807 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 07:58:05,097 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 07:58:05,409 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:58:05,635 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-10 07:58:05,868 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:58:06,179 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:58:06,558 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-10 07:58:06,750 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-10 07:58:06,957 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-10 07:58:08,525 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:58:08,719 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-09-10 07:58:09,308 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-10 07:58:09,530 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:58:09,768 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-10 07:58:10,272 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:58:11,161 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 07:58:11,713 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-10 07:58:11,963 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:58:12,261 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 07:58:13,323 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 07:58:13,544 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 07:58:13,759 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:58:14,833 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:58:15,180 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:58:15,586 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 07:58:16,269 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 07:58:16,715 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 07:58:17,279 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 07:58:17,535 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:58:17,693 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-10 07:58:18,194 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 07:58:18,454 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-10 07:58:18,831 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 07:58:19,293 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 07:58:19,531 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-10 07:58:20,671 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:58:21,316 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 07:58:21,993 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 07:58:22,235 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:58:22,570 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:58:23,253 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:58:24,071 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-10 07:58:24,571 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-10 07:58:24,913 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:58:25,703 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 07:58:26,102 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:58:26,694 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-10 07:58:27,783 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-09-10 07:58:29,556 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2019-09-10 07:58:30,086 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:58:31,171 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-10 07:58:31,563 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:58:32,256 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-10 07:58:33,870 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-10 07:58:34,334 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-10 07:58:35,093 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-10 07:58:35,861 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:58:36,179 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-10 07:58:36,738 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:58:37,202 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 07:58:38,337 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-10 07:58:38,875 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-10 07:58:39,488 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:58:39,888 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-10 07:58:40,459 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 07:58:41,106 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 07:58:41,687 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:58:42,081 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 07:58:42,734 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 07:58:43,157 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-10 07:58:43,414 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-10 07:58:44,007 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 07:58:44,426 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-10 07:58:44,982 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 07:58:46,140 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:58:46,341 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 07:58:47,021 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-09-10 07:58:47,239 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-10 07:58:47,411 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-09-10 07:58:47,651 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-10 07:58:48,111 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-10 07:58:48,511 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2019-09-10 07:58:49,368 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-10 07:58:49,694 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:58:49,956 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-10 07:58:50,206 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-10 07:58:50,395 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-09-10 07:58:52,925 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-09-10 07:58:53,297 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-10 07:58:55,576 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-10 07:58:56,126 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 07:58:57,593 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 07:58:57,863 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-10 07:58:58,279 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-10 07:58:58,475 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 07:58:58,766 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-10 07:58:59,005 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-10 07:58:59,224 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-10 07:58:59,829 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-10 07:59:00,602 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-09-10 07:59:00,883 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-10 07:59:01,211 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:59:01,533 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-10 07:59:01,903 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:59:02,127 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:59:02,308 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:59:02,550 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-10 07:59:02,873 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-10 07:59:03,084 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-10 07:59:03,562 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-10 07:59:03,851 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 07:59:04,175 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-10 07:59:04,559 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:59:04,776 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 07:59:05,126 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-10 07:59:06,186 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:59:06,768 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:59:07,497 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-10 07:59:07,989 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 07:59:08,331 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 07:59:08,742 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-10 07:59:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:59:10,837 INFO L93 Difference]: Finished difference Result 34674 states and 42242 transitions. [2019-09-10 07:59:10,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2019-09-10 07:59:10,837 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 139 [2019-09-10 07:59:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:59:10,872 INFO L225 Difference]: With dead ends: 34674 [2019-09-10 07:59:10,873 INFO L226 Difference]: Without dead ends: 34674 [2019-09-10 07:59:10,880 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41555 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=9767, Invalid=100789, Unknown=0, NotChecked=0, Total=110556 [2019-09-10 07:59:10,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34674 states. [2019-09-10 07:59:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34674 to 13315. [2019-09-10 07:59:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13315 states. [2019-09-10 07:59:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 16268 transitions. [2019-09-10 07:59:11,051 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 16268 transitions. Word has length 139 [2019-09-10 07:59:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:59:11,051 INFO L475 AbstractCegarLoop]: Abstraction has 13315 states and 16268 transitions. [2019-09-10 07:59:11,051 INFO L476 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-09-10 07:59:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 16268 transitions. [2019-09-10 07:59:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-10 07:59:11,055 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:59:11,055 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:59:11,055 INFO L418 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:59:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:11,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1024963639, now seen corresponding path program 1 times [2019-09-10 07:59:11,056 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:59:11,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:11,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:11,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:59:11,057 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:59:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:11,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:11,489 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:59:11,489 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2019-09-10 07:59:11,489 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [57], [60], [63], [66], [69], [72], [76], [79], [82], [87], [89], [92], [95], [98], [100], [102], [105], [108], [111], [113], [115], [118], [121], [124], [126], [128], [131], [138], [140], [143], [144], [146], [155], [158], [162], [173], [176], [179], [181], [189], [192], [198], [201], [204], [206], [223], [226], [229], [231], [239], [242], [244], [248], [251], [254], [256], [290], [291], [295], [296], [297] [2019-09-10 07:59:11,491 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:59:11,491 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:59:11,498 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:59:11,805 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:59:11,805 INFO L272 AbstractInterpreter]: Visited 80 different actions 826 times. Merged at 50 different actions 641 times. Widened at 17 different actions 109 times. Performed 2941 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2941 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 99 fixpoints after 20 different actions. Largest state had 112 variables. [2019-09-10 07:59:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:59:11,806 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:59:11,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:59:11,806 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:59:11,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:59:11,823 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:59:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:59:11,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 67 conjunts are in the unsatisfiable core [2019-09-10 07:59:11,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:59:12,784 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-09-10 07:59:13,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:13,338 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-10 07:59:14,138 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2019-09-10 07:59:15,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:15,309 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-09-10 07:59:15,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:15,693 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-09-10 07:59:15,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:15,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:15,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:16,248 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-10 07:59:16,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:16,938 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-10 07:59:16,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:18,276 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:59:19,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:19,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:19,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:19,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:20,342 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-10 07:59:21,300 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-09-10 07:59:21,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 8 terms [2019-09-10 07:59:21,766 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-09-10 07:59:22,281 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 07:59:22,783 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-09-10 07:59:22,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 8 terms [2019-09-10 07:59:23,783 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-10 07:59:23,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 8 terms [2019-09-10 07:59:23,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:23,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:23,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:23,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:23,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:23,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:23,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:23,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:25,451 WARN L188 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 116 [2019-09-10 07:59:28,470 WARN L188 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 158 DAG size of output: 144 [2019-09-10 07:59:29,358 WARN L188 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-09-10 07:59:29,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-09-10 07:59:29,382 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-09-10 07:59:29,382 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-09-10 07:59:29,383 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-09-10 07:59:30,829 WARN L188 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 195 [2019-09-10 07:59:31,557 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 109 [2019-09-10 07:59:32,319 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2019-09-10 07:59:32,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-10 07:59:33,275 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2019-09-10 07:59:33,898 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-09-10 07:59:33,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 07:59:34,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:59:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:59:34,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:59:34,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 37, 34] total 84 [2019-09-10 07:59:34,892 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:59:34,892 INFO L454 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-09-10 07:59:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-09-10 07:59:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=6316, Unknown=0, NotChecked=0, Total=6972 [2019-09-10 07:59:34,893 INFO L87 Difference]: Start difference. First operand 13315 states and 16268 transitions. Second operand 53 states. [2019-09-10 07:59:38,807 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-10 07:59:39,123 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:59:39,725 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:59:41,081 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-09-10 07:59:44,512 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-10 07:59:47,330 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-10 07:59:48,759 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2019-09-10 07:59:50,648 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-10 07:59:51,702 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-10 07:59:52,162 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-10 07:59:52,589 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 07:59:53,385 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-10 07:59:54,224 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 07:59:57,272 WARN L188 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2019-09-10 07:59:58,915 WARN L188 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:00:01,553 WARN L188 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-10 08:00:03,891 WARN L188 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-10 08:00:04,990 WARN L188 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-10 08:00:11,130 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 08:00:13,011 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2019-09-10 08:00:23,161 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 08:00:25,636 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-10 08:00:32,868 WARN L188 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 08:00:35,499 WARN L188 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2019-09-10 08:00:37,617 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62