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.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 07:31:15,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 07:31:15,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 07:31:15,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 07:31:15,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 07:31:15,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 07:31:15,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 07:31:15,433 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 07:31:15,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 07:31:15,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 07:31:15,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 07:31:15,450 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 07:31:15,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 07:31:15,451 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 07:31:15,451 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 07:31:15,452 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 07:31:15,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 07:31:15,452 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 07:31:15,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 07:31:15,453 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 07:31:15,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 07:31:15,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 07:31:15,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 07:31:15,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 07:31:15,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 07:31:15,454 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 07:31:15,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 07:31:15,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 07:31:15,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 07:31:15,455 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 07:31:15,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 07:31:15,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 07:31:15,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 07:31:15,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 07:31:15,456 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 07:31:15,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 07:31:15,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 07:31:15,457 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 07:31:15,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 07:31:15,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 07:31:15,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 07:31:15,506 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 07:31:15,506 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 07:31:15,507 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 07:31:15,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072ff7771/66a034c715604919b17163f67978da4b/FLAG40ec47b97 [2019-09-10 07:31:16,031 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 07:31:16,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 07:31:16,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072ff7771/66a034c715604919b17163f67978da4b/FLAG40ec47b97 [2019-09-10 07:31:16,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072ff7771/66a034c715604919b17163f67978da4b [2019-09-10 07:31:16,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 07:31:16,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 07:31:16,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 07:31:16,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 07:31:16,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 07:31:16,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7106b43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16, skipping insertion in model container [2019-09-10 07:31:16,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,411 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 07:31:16,462 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 07:31:16,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:31:16,820 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 07:31:16,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:31:16,900 INFO L192 MainTranslator]: Completed translation [2019-09-10 07:31:16,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16 WrapperNode [2019-09-10 07:31:16,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 07:31:16,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 07:31:16,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 07:31:16,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 07:31:16,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (1/1) ... [2019-09-10 07:31:16,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 07:31:16,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 07:31:16,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 07:31:16,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 07:31:16,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (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 07:31:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 07:31:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 07:31:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 07:31:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 07:31:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 07:31:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 07:31:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 07:31:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 07:31:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 07:31:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 07:31:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 07:31:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 07:31:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 07:31:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 07:31:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 07:31:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 07:31:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 07:31:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 07:31:17,509 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 07:31:17,510 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 07:31:17,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:31:17 BoogieIcfgContainer [2019-09-10 07:31:17,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 07:31:17,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 07:31:17,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 07:31:17,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 07:31:17,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 07:31:16" (1/3) ... [2019-09-10 07:31:17,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfbd833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:31:17, skipping insertion in model container [2019-09-10 07:31:17,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:31:16" (2/3) ... [2019-09-10 07:31:17,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfbd833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:31:17, skipping insertion in model container [2019-09-10 07:31:17,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:31:17" (3/3) ... [2019-09-10 07:31:17,522 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 07:31:17,530 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 07:31:17,537 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 07:31:17,554 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 07:31:17,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 07:31:17,580 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 07:31:17,580 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 07:31:17,580 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 07:31:17,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 07:31:17,580 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 07:31:17,580 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 07:31:17,581 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 07:31:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2019-09-10 07:31:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-10 07:31:17,605 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:17,606 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] [2019-09-10 07:31:17,608 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:17,613 INFO L82 PathProgramCache]: Analyzing trace with hash -427904680, now seen corresponding path program 1 times [2019-09-10 07:31:17,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:17,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:17,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:17,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:17,665 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:17,949 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 07:31:17,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:17,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:31:17,957 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:17,962 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:31:17,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:31:17,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:17,981 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2019-09-10 07:31:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:18,063 INFO L93 Difference]: Finished difference Result 103 states and 160 transitions. [2019-09-10 07:31:18,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:31:18,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-09-10 07:31:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:18,077 INFO L225 Difference]: With dead ends: 103 [2019-09-10 07:31:18,078 INFO L226 Difference]: Without dead ends: 95 [2019-09-10 07:31:18,079 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 07:31:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-09-10 07:31:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2019-09-10 07:31:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-09-10 07:31:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 134 transitions. [2019-09-10 07:31:18,128 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 134 transitions. Word has length 40 [2019-09-10 07:31:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:18,129 INFO L475 AbstractCegarLoop]: Abstraction has 93 states and 134 transitions. [2019-09-10 07:31:18,129 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:31:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 134 transitions. [2019-09-10 07:31:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-10 07:31:18,133 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:18,133 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] [2019-09-10 07:31:18,133 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1893549176, now seen corresponding path program 1 times [2019-09-10 07:31:18,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:18,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:18,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,138 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:18,288 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 07:31:18,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:18,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:31:18,289 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:18,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:31:18,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:31:18,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:18,294 INFO L87 Difference]: Start difference. First operand 93 states and 134 transitions. Second operand 3 states. [2019-09-10 07:31:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:18,346 INFO L93 Difference]: Finished difference Result 147 states and 217 transitions. [2019-09-10 07:31:18,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:31:18,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-10 07:31:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:18,351 INFO L225 Difference]: With dead ends: 147 [2019-09-10 07:31:18,352 INFO L226 Difference]: Without dead ends: 147 [2019-09-10 07:31:18,354 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 07:31:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-10 07:31:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2019-09-10 07:31:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-09-10 07:31:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 216 transitions. [2019-09-10 07:31:18,390 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 216 transitions. Word has length 41 [2019-09-10 07:31:18,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:18,391 INFO L475 AbstractCegarLoop]: Abstraction has 145 states and 216 transitions. [2019-09-10 07:31:18,391 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:31:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 216 transitions. [2019-09-10 07:31:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-10 07:31:18,396 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:18,396 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] [2019-09-10 07:31:18,397 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:18,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:18,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1082568320, now seen corresponding path program 1 times [2019-09-10 07:31:18,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:18,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:18,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,403 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:18,542 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 07:31:18,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:18,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:31:18,543 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:18,545 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:31:18,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:31:18,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:18,546 INFO L87 Difference]: Start difference. First operand 145 states and 216 transitions. Second operand 3 states. [2019-09-10 07:31:18,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:18,584 INFO L93 Difference]: Finished difference Result 235 states and 353 transitions. [2019-09-10 07:31:18,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:31:18,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-10 07:31:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:18,594 INFO L225 Difference]: With dead ends: 235 [2019-09-10 07:31:18,594 INFO L226 Difference]: Without dead ends: 235 [2019-09-10 07:31:18,594 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 07:31:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-09-10 07:31:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-09-10 07:31:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-10 07:31:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 352 transitions. [2019-09-10 07:31:18,626 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 352 transitions. Word has length 42 [2019-09-10 07:31:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:18,627 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 352 transitions. [2019-09-10 07:31:18,627 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:31:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 352 transitions. [2019-09-10 07:31:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 07:31:18,644 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:18,645 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] [2019-09-10 07:31:18,645 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:18,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:18,646 INFO L82 PathProgramCache]: Analyzing trace with hash 304274593, now seen corresponding path program 1 times [2019-09-10 07:31:18,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:18,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:18,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,648 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:18,742 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 07:31:18,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:18,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:31:18,743 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:18,744 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:18,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:18,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:31:18,745 INFO L87 Difference]: Start difference. First operand 233 states and 352 transitions. Second operand 5 states. [2019-09-10 07:31:18,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:18,840 INFO L93 Difference]: Finished difference Result 233 states and 348 transitions. [2019-09-10 07:31:18,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:31:18,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-10 07:31:18,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:18,843 INFO L225 Difference]: With dead ends: 233 [2019-09-10 07:31:18,843 INFO L226 Difference]: Without dead ends: 233 [2019-09-10 07:31:18,844 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 07:31:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2019-09-10 07:31:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2019-09-10 07:31:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-10 07:31:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2019-09-10 07:31:18,855 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 43 [2019-09-10 07:31:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:18,855 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2019-09-10 07:31:18,855 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2019-09-10 07:31:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 07:31:18,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:18,857 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] [2019-09-10 07:31:18,857 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:18,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1578142598, now seen corresponding path program 1 times [2019-09-10 07:31:18,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:18,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:18,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:18,860 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:18,942 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 07:31:18,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:18,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:31:18,943 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:18,943 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:18,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:31:18,946 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand 5 states. [2019-09-10 07:31:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:19,043 INFO L93 Difference]: Finished difference Result 233 states and 344 transitions. [2019-09-10 07:31:19,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:31:19,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-10 07:31:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:19,046 INFO L225 Difference]: With dead ends: 233 [2019-09-10 07:31:19,046 INFO L226 Difference]: Without dead ends: 233 [2019-09-10 07:31:19,048 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 07:31:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2019-09-10 07:31:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2019-09-10 07:31:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-10 07:31:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 344 transitions. [2019-09-10 07:31:19,061 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 344 transitions. Word has length 43 [2019-09-10 07:31:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:19,062 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 344 transitions. [2019-09-10 07:31:19,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 344 transitions. [2019-09-10 07:31:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 07:31:19,063 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:19,063 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:31:19,063 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:19,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:19,064 INFO L82 PathProgramCache]: Analyzing trace with hash -263887935, now seen corresponding path program 1 times [2019-09-10 07:31:19,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:19,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:19,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,066 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:19,175 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 07:31:19,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:19,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:31:19,176 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:19,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:19,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:31:19,178 INFO L87 Difference]: Start difference. First operand 233 states and 344 transitions. Second operand 5 states. [2019-09-10 07:31:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:19,265 INFO L93 Difference]: Finished difference Result 863 states and 1291 transitions. [2019-09-10 07:31:19,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:31:19,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-10 07:31:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:19,273 INFO L225 Difference]: With dead ends: 863 [2019-09-10 07:31:19,273 INFO L226 Difference]: Without dead ends: 863 [2019-09-10 07:31:19,274 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:31:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-09-10 07:31:19,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 649. [2019-09-10 07:31:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-09-10 07:31:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 968 transitions. [2019-09-10 07:31:19,298 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 968 transitions. Word has length 43 [2019-09-10 07:31:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:19,299 INFO L475 AbstractCegarLoop]: Abstraction has 649 states and 968 transitions. [2019-09-10 07:31:19,299 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 968 transitions. [2019-09-10 07:31:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-10 07:31:19,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:19,312 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] [2019-09-10 07:31:19,312 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1086429188, now seen corresponding path program 1 times [2019-09-10 07:31:19,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:19,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:19,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,319 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:19,436 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 07:31:19,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:19,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:31:19,437 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:19,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:31:19,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:31:19,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:19,441 INFO L87 Difference]: Start difference. First operand 649 states and 968 transitions. Second operand 3 states. [2019-09-10 07:31:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:19,474 INFO L93 Difference]: Finished difference Result 949 states and 1395 transitions. [2019-09-10 07:31:19,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:31:19,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-09-10 07:31:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:19,482 INFO L225 Difference]: With dead ends: 949 [2019-09-10 07:31:19,483 INFO L226 Difference]: Without dead ends: 949 [2019-09-10 07:31:19,483 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 07:31:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2019-09-10 07:31:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 947. [2019-09-10 07:31:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2019-09-10 07:31:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1394 transitions. [2019-09-10 07:31:19,514 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1394 transitions. Word has length 45 [2019-09-10 07:31:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:19,515 INFO L475 AbstractCegarLoop]: Abstraction has 947 states and 1394 transitions. [2019-09-10 07:31:19,515 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:31:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1394 transitions. [2019-09-10 07:31:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-10 07:31:19,517 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:19,517 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] [2019-09-10 07:31:19,517 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:19,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1066379845, now seen corresponding path program 1 times [2019-09-10 07:31:19,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:19,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:19,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,520 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:19,776 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 07:31:19,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:19,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:31:19,777 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:19,777 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:19,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:19,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:31:19,778 INFO L87 Difference]: Start difference. First operand 947 states and 1394 transitions. Second operand 5 states. [2019-09-10 07:31:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:19,846 INFO L93 Difference]: Finished difference Result 1563 states and 2288 transitions. [2019-09-10 07:31:19,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:31:19,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-09-10 07:31:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:19,854 INFO L225 Difference]: With dead ends: 1563 [2019-09-10 07:31:19,854 INFO L226 Difference]: Without dead ends: 1563 [2019-09-10 07:31:19,855 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:31:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2019-09-10 07:31:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1255. [2019-09-10 07:31:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-09-10 07:31:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1826 transitions. [2019-09-10 07:31:19,884 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1826 transitions. Word has length 45 [2019-09-10 07:31:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:19,885 INFO L475 AbstractCegarLoop]: Abstraction has 1255 states and 1826 transitions. [2019-09-10 07:31:19,885 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1826 transitions. [2019-09-10 07:31:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-10 07:31:19,886 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:19,886 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] [2019-09-10 07:31:19,886 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1300053745, now seen corresponding path program 1 times [2019-09-10 07:31:19,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:19,888 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:19,955 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 07:31:19,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:19,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:31:19,956 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:19,956 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:19,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:31:19,957 INFO L87 Difference]: Start difference. First operand 1255 states and 1826 transitions. Second operand 5 states. [2019-09-10 07:31:20,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:20,017 INFO L93 Difference]: Finished difference Result 2401 states and 3428 transitions. [2019-09-10 07:31:20,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:31:20,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-09-10 07:31:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:20,029 INFO L225 Difference]: With dead ends: 2401 [2019-09-10 07:31:20,029 INFO L226 Difference]: Without dead ends: 2401 [2019-09-10 07:31:20,030 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 07:31:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2019-09-10 07:31:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1335. [2019-09-10 07:31:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2019-09-10 07:31:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1902 transitions. [2019-09-10 07:31:20,068 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1902 transitions. Word has length 46 [2019-09-10 07:31:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:20,069 INFO L475 AbstractCegarLoop]: Abstraction has 1335 states and 1902 transitions. [2019-09-10 07:31:20,069 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1902 transitions. [2019-09-10 07:31:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 07:31:20,070 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:20,070 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:31:20,071 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:20,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:20,071 INFO L82 PathProgramCache]: Analyzing trace with hash 619866378, now seen corresponding path program 1 times [2019-09-10 07:31:20,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:20,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:20,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:20,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:20,073 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:20,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:20,148 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:20,149 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2019-09-10 07:31:20,151 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [66], [68], [71], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [139], [142], [145], [147], [162], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:20,189 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:20,190 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:20,318 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:20,824 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:20,827 INFO L272 AbstractInterpreter]: Visited 59 different actions 441 times. Merged at 36 different actions 331 times. Widened at 15 different actions 55 times. Performed 1576 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1576 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 16 different actions. Largest state had 90 variables. [2019-09-10 07:31:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:20,833 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:20,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:20,834 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:31:20,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:20,875 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:31:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:20,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 07:31:20,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:31:21,061 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:31:21,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 07:31:21,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-09-10 07:31:21,111 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:21,111 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:21,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:21,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:31:21,112 INFO L87 Difference]: Start difference. First operand 1335 states and 1902 transitions. Second operand 5 states. [2019-09-10 07:31:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:21,173 INFO L93 Difference]: Finished difference Result 1563 states and 2228 transitions. [2019-09-10 07:31:21,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:31:21,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-10 07:31:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:21,180 INFO L225 Difference]: With dead ends: 1563 [2019-09-10 07:31:21,181 INFO L226 Difference]: Without dead ends: 1563 [2019-09-10 07:31:21,181 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:31:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2019-09-10 07:31:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1335. [2019-09-10 07:31:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2019-09-10 07:31:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1890 transitions. [2019-09-10 07:31:21,211 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1890 transitions. Word has length 64 [2019-09-10 07:31:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:21,212 INFO L475 AbstractCegarLoop]: Abstraction has 1335 states and 1890 transitions. [2019-09-10 07:31:21,212 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1890 transitions. [2019-09-10 07:31:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 07:31:21,213 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:21,213 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:31:21,214 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:21,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash 596121156, now seen corresponding path program 1 times [2019-09-10 07:31:21,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:21,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:21,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:21,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:21,216 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 07:31:21,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:21,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:31:21,295 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:21,296 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:21,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:31:21,297 INFO L87 Difference]: Start difference. First operand 1335 states and 1890 transitions. Second operand 5 states. [2019-09-10 07:31:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:21,386 INFO L93 Difference]: Finished difference Result 1897 states and 2705 transitions. [2019-09-10 07:31:21,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:31:21,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-10 07:31:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:21,396 INFO L225 Difference]: With dead ends: 1897 [2019-09-10 07:31:21,397 INFO L226 Difference]: Without dead ends: 1897 [2019-09-10 07:31:21,397 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:31:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2019-09-10 07:31:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1667. [2019-09-10 07:31:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2019-09-10 07:31:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2366 transitions. [2019-09-10 07:31:21,438 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2366 transitions. Word has length 64 [2019-09-10 07:31:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:21,439 INFO L475 AbstractCegarLoop]: Abstraction has 1667 states and 2366 transitions. [2019-09-10 07:31:21,439 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2366 transitions. [2019-09-10 07:31:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 07:31:21,441 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:21,441 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:31:21,441 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:21,442 INFO L82 PathProgramCache]: Analyzing trace with hash 223595262, now seen corresponding path program 1 times [2019-09-10 07:31:21,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:21,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:21,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:21,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:21,443 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:21,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:21,533 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:21,533 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2019-09-10 07:31:21,533 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [79], [81], [84], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [137], [139], [142], [145], [147], [162], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:21,539 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:21,539 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:21,563 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:21,765 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:21,766 INFO L272 AbstractInterpreter]: Visited 59 different actions 361 times. Merged at 36 different actions 261 times. Widened at 12 different actions 41 times. Performed 1363 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1363 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 32 fixpoints after 10 different actions. Largest state had 90 variables. [2019-09-10 07:31:21,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:21,766 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:21,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:21,767 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 07:31:21,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:21,794 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 07:31:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:21,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 07:31:21,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:31:21,970 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-10 07:31:22,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 07:31:22,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-09-10 07:31:22,017 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:22,018 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:31:22,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:31:22,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:31:22,018 INFO L87 Difference]: Start difference. First operand 1667 states and 2366 transitions. Second operand 5 states. [2019-09-10 07:31:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:22,100 INFO L93 Difference]: Finished difference Result 2121 states and 3033 transitions. [2019-09-10 07:31:22,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:31:22,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-10 07:31:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:22,109 INFO L225 Difference]: With dead ends: 2121 [2019-09-10 07:31:22,109 INFO L226 Difference]: Without dead ends: 2121 [2019-09-10 07:31:22,110 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:31:22,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2019-09-10 07:31:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1891. [2019-09-10 07:31:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2019-09-10 07:31:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2694 transitions. [2019-09-10 07:31:22,159 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2694 transitions. Word has length 64 [2019-09-10 07:31:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:22,160 INFO L475 AbstractCegarLoop]: Abstraction has 1891 states and 2694 transitions. [2019-09-10 07:31:22,161 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:31:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2694 transitions. [2019-09-10 07:31:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 07:31:22,164 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:22,164 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] [2019-09-10 07:31:22,165 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:22,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1815695605, now seen corresponding path program 1 times [2019-09-10 07:31:22,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:22,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:22,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:22,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:22,168 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:31:22,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:22,261 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:22,261 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-09-10 07:31:22,262 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [66], [68], [71], [79], [81], [84], [92], [94], [97], [100], [104], [106], [109], [110], [112], [114], [119], [121], [124], [137], [139], [142], [145], [147], [162], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:22,270 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:22,271 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:22,293 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:22,492 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:22,492 INFO L272 AbstractInterpreter]: Visited 59 different actions 437 times. Merged at 36 different actions 316 times. Widened at 17 different actions 61 times. Performed 1537 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1537 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 49 fixpoints after 19 different actions. Largest state had 90 variables. [2019-09-10 07:31:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:22,493 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:22,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:22,493 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:31:22,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:22,509 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 07:31:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:22,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-10 07:31:22,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:22,675 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:22,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 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 07:31:22,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:31:22,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2019-09-10 07:31:22,789 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:31:22,790 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:31:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:31:22,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-09-10 07:31:22,791 INFO L87 Difference]: Start difference. First operand 1891 states and 2694 transitions. Second operand 7 states. [2019-09-10 07:31:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:22,901 INFO L93 Difference]: Finished difference Result 3759 states and 5224 transitions. [2019-09-10 07:31:22,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:31:22,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-10 07:31:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:22,918 INFO L225 Difference]: With dead ends: 3759 [2019-09-10 07:31:22,918 INFO L226 Difference]: Without dead ends: 3759 [2019-09-10 07:31:22,919 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-09-10 07:31:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2019-09-10 07:31:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3735. [2019-09-10 07:31:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3735 states. [2019-09-10 07:31:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 5198 transitions. [2019-09-10 07:31:22,990 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 5198 transitions. Word has length 65 [2019-09-10 07:31:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:22,990 INFO L475 AbstractCegarLoop]: Abstraction has 3735 states and 5198 transitions. [2019-09-10 07:31:22,991 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:31:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 5198 transitions. [2019-09-10 07:31:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 07:31:22,992 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:22,992 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] [2019-09-10 07:31:22,992 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:22,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2112957636, now seen corresponding path program 1 times [2019-09-10 07:31:22,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:22,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:22,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:22,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:22,995 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:23,209 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 07:31:23,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:23,212 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:23,212 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 07:31:23,212 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [66], [68], [71], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [133], [139], [142], [145], [147], [162], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:23,215 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:23,215 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:23,234 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:23,407 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:23,407 INFO L272 AbstractInterpreter]: Visited 59 different actions 395 times. Merged at 36 different actions 289 times. Widened at 13 different actions 43 times. Performed 1399 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1399 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 34 fixpoints after 16 different actions. Largest state had 90 variables. [2019-09-10 07:31:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:23,408 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:23,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:23,408 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:31:23,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:23,423 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:31:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:23,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 07:31:23,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:23,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:23,970 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 07:31:23,970 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:24,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:24,331 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 07:31:24,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:31:24,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2019-09-10 07:31:24,344 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:31:24,344 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 07:31:24,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 07:31:24,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2019-09-10 07:31:24,346 INFO L87 Difference]: Start difference. First operand 3735 states and 5198 transitions. Second operand 17 states. [2019-09-10 07:31:25,589 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-10 07:31:26,837 WARN L188 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-09-10 07:31:27,800 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 07:31:29,964 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2019-09-10 07:31:32,064 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-09-10 07:31:36,104 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 07:31:40,235 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 07:31:40,937 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2019-09-10 07:31:41,619 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-10 07:31:42,649 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-10 07:31:45,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:45,061 INFO L93 Difference]: Finished difference Result 62522 states and 83163 transitions. [2019-09-10 07:31:45,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2019-09-10 07:31:45,062 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2019-09-10 07:31:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:45,236 INFO L225 Difference]: With dead ends: 62522 [2019-09-10 07:31:45,236 INFO L226 Difference]: Without dead ends: 62522 [2019-09-10 07:31:45,251 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22975 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=7296, Invalid=48164, Unknown=0, NotChecked=0, Total=55460 [2019-09-10 07:31:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62522 states. [2019-09-10 07:31:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62522 to 17461. [2019-09-10 07:31:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2019-09-10 07:31:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 23750 transitions. [2019-09-10 07:31:45,944 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 23750 transitions. Word has length 66 [2019-09-10 07:31:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:45,945 INFO L475 AbstractCegarLoop]: Abstraction has 17461 states and 23750 transitions. [2019-09-10 07:31:45,945 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 07:31:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 23750 transitions. [2019-09-10 07:31:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 07:31:45,948 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:45,948 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:31:45,948 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:45,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1295369161, now seen corresponding path program 1 times [2019-09-10 07:31:45,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:45,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:45,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:45,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:45,952 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:46,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:46,174 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:46,174 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 07:31:46,175 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [137], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:46,182 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:46,182 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:46,199 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:46,412 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:46,413 INFO L272 AbstractInterpreter]: Visited 61 different actions 420 times. Merged at 38 different actions 317 times. Widened at 13 different actions 47 times. Performed 1578 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1578 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 36 fixpoints after 12 different actions. Largest state had 90 variables. [2019-09-10 07:31:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:46,414 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:46,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:46,414 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:31:46,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:46,620 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:31:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:46,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 07:31:46,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:46,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:47,012 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:47,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 07:31:47,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:31:47,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 07:31:47,245 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:31:47,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 07:31:47,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 07:31:47,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2019-09-10 07:31:47,250 INFO L87 Difference]: Start difference. First operand 17461 states and 23750 transitions. Second operand 17 states. [2019-09-10 07:31:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:50,250 INFO L93 Difference]: Finished difference Result 95738 states and 127352 transitions. [2019-09-10 07:31:50,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-10 07:31:50,251 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2019-09-10 07:31:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:50,377 INFO L225 Difference]: With dead ends: 95738 [2019-09-10 07:31:50,377 INFO L226 Difference]: Without dead ends: 95738 [2019-09-10 07:31:50,378 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=874, Invalid=2432, Unknown=0, NotChecked=0, Total=3306 [2019-09-10 07:31:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95738 states. [2019-09-10 07:31:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95738 to 43474. [2019-09-10 07:31:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43474 states. [2019-09-10 07:31:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43474 states to 43474 states and 58839 transitions. [2019-09-10 07:31:52,413 INFO L78 Accepts]: Start accepts. Automaton has 43474 states and 58839 transitions. Word has length 66 [2019-09-10 07:31:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:52,413 INFO L475 AbstractCegarLoop]: Abstraction has 43474 states and 58839 transitions. [2019-09-10 07:31:52,413 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 07:31:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 43474 states and 58839 transitions. [2019-09-10 07:31:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 07:31:52,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:52,416 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:31:52,416 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:52,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:52,417 INFO L82 PathProgramCache]: Analyzing trace with hash -401806685, now seen corresponding path program 1 times [2019-09-10 07:31:52,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:52,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:52,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:52,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:52,419 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:53,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:53,367 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:53,367 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 68 with the following transitions: [2019-09-10 07:31:53,367 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:53,371 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:53,371 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:53,388 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:53,537 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:53,538 INFO L272 AbstractInterpreter]: Visited 62 different actions 348 times. Merged at 39 different actions 252 times. Widened at 8 different actions 23 times. Performed 1230 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1230 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 31 fixpoints after 13 different actions. Largest state had 90 variables. [2019-09-10 07:31:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:53,538 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:53,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:53,538 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 07:31:53,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:53,562 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:31:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:53,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-10 07:31:53,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:54,096 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-10 07:31:54,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:54,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:54,749 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2019-09-10 07:31:55,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:55,643 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:56,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:56,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:56,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:56,694 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2019-09-10 07:31:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:56,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:31:56,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 47 [2019-09-10 07:31:56,721 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:31:56,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-10 07:31:56,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-10 07:31:56,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1983, Unknown=0, NotChecked=0, Total=2162 [2019-09-10 07:31:56,723 INFO L87 Difference]: Start difference. First operand 43474 states and 58839 transitions. Second operand 36 states. [2019-09-10 07:31:57,960 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2019-09-10 07:31:58,337 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2019-09-10 07:31:58,588 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2019-09-10 07:31:58,998 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 53 [2019-09-10 07:31:59,366 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 56 [2019-09-10 07:31:59,667 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 53 [2019-09-10 07:32:00,023 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 56 [2019-09-10 07:32:00,458 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2019-09-10 07:32:00,933 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2019-09-10 07:32:01,292 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:32:01,672 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:32:02,035 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2019-09-10 07:32:02,549 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:32:03,308 WARN L188 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-09-10 07:32:03,738 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:32:03,949 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2019-09-10 07:32:04,199 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2019-09-10 07:32:04,520 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2019-09-10 07:32:04,891 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-10 07:32:05,306 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:32:05,555 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2019-09-10 07:32:05,859 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:32:06,277 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-10 07:32:06,672 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:32:07,040 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-09-10 07:32:07,509 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-09-10 07:32:07,769 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2019-09-10 07:32:08,082 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:32:08,424 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-10 07:32:08,832 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-10 07:32:09,264 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2019-09-10 07:32:09,718 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2019-09-10 07:32:10,045 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2019-09-10 07:32:10,383 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:32:10,848 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2019-09-10 07:32:11,377 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 69 [2019-09-10 07:32:11,822 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2019-09-10 07:32:12,219 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2019-09-10 07:32:12,655 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2019-09-10 07:32:12,837 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2019-09-10 07:32:13,123 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2019-09-10 07:32:13,551 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2019-09-10 07:32:13,866 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:32:14,486 WARN L188 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 69 [2019-09-10 07:32:14,747 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2019-09-10 07:32:15,079 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2019-09-10 07:32:15,662 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 89 [2019-09-10 07:32:16,068 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2019-09-10 07:32:16,351 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2019-09-10 07:32:16,548 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2019-09-10 07:32:16,890 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2019-09-10 07:32:17,118 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 07:32:17,548 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2019-09-10 07:32:17,797 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-10 07:32:18,154 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2019-09-10 07:32:18,545 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-10 07:32:18,933 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2019-09-10 07:32:19,197 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2019-09-10 07:32:19,580 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2019-09-10 07:32:19,857 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2019-09-10 07:32:20,111 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2019-09-10 07:32:20,378 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2019-09-10 07:32:20,967 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-10 07:32:21,478 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2019-09-10 07:32:21,700 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2019-09-10 07:32:21,961 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2019-09-10 07:32:22,441 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2019-09-10 07:32:22,843 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2019-09-10 07:32:23,226 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2019-09-10 07:32:23,572 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2019-09-10 07:32:23,789 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-09-10 07:32:24,233 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 93 [2019-09-10 07:32:24,458 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-10 07:32:25,039 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2019-09-10 07:32:25,426 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2019-09-10 07:32:25,982 WARN L188 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 80 [2019-09-10 07:32:26,249 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-10 07:32:26,719 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-10 07:32:27,088 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2019-09-10 07:32:27,392 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:32:27,924 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 97 [2019-09-10 07:32:28,186 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-09-10 07:32:28,518 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-10 07:32:28,687 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-10 07:32:29,105 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2019-09-10 07:32:29,393 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-10 07:32:29,604 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-10 07:32:29,833 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2019-09-10 07:32:30,243 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2019-09-10 07:32:30,402 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2019-09-10 07:32:30,654 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2019-09-10 07:32:31,067 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-09-10 07:32:31,560 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2019-09-10 07:32:31,918 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2019-09-10 07:32:32,467 WARN L188 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 80 [2019-09-10 07:32:32,699 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2019-09-10 07:32:32,889 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2019-09-10 07:32:33,159 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2019-09-10 07:32:33,571 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2019-09-10 07:32:33,865 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 07:32:34,337 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 75 [2019-09-10 07:32:34,903 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:32:35,107 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 07:32:35,774 WARN L188 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 101 [2019-09-10 07:32:36,180 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2019-09-10 07:32:36,460 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-10 07:32:36,850 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2019-09-10 07:32:37,057 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:32:37,538 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 97 [2019-09-10 07:32:37,804 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:32:38,108 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-09-10 07:32:38,367 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2019-09-10 07:32:38,592 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-09-10 07:32:38,935 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:32:39,218 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-10 07:32:39,540 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-09-10 07:32:39,779 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:32:40,027 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2019-09-10 07:32:40,376 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2019-09-10 07:32:40,960 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 63 [2019-09-10 07:32:41,307 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:32:41,648 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 69 [2019-09-10 07:32:42,108 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2019-09-10 07:32:42,391 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2019-09-10 07:32:42,945 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2019-09-10 07:32:43,166 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2019-09-10 07:32:43,476 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2019-09-10 07:32:43,702 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:32:44,134 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2019-09-10 07:32:44,374 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2019-09-10 07:32:44,710 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-10 07:32:45,195 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:32:45,572 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:32:45,922 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-10 07:32:46,166 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2019-09-10 07:32:46,373 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:32:46,762 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 63 [2019-09-10 07:32:47,036 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2019-09-10 07:32:47,231 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 07:32:47,570 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2019-09-10 07:32:47,786 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:32:48,005 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2019-09-10 07:32:48,455 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2019-09-10 07:32:48,756 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2019-09-10 07:32:49,092 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2019-09-10 07:32:49,471 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:32:49,718 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2019-09-10 07:32:50,189 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:32:50,368 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:32:50,632 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-10 07:32:51,022 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2019-09-10 07:32:51,333 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-10 07:32:51,813 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:32:52,158 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2019-09-10 07:32:52,430 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2019-09-10 07:32:53,269 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-10 07:32:53,645 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:32:54,267 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2019-09-10 07:32:54,632 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:32:55,001 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-10 07:32:55,416 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-10 07:32:56,002 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-09-10 07:32:56,447 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:32:56,689 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 07:32:57,243 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2019-09-10 07:32:57,578 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2019-09-10 07:32:57,916 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:32:58,709 WARN L188 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:32:59,090 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:32:59,598 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:33:00,231 WARN L188 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2019-09-10 07:33:00,488 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 07:33:00,839 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2019-09-10 07:33:01,162 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 07:33:01,546 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2019-09-10 07:33:02,069 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2019-09-10 07:33:02,366 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2019-09-10 07:33:02,742 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2019-09-10 07:33:03,201 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:33:03,747 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:33:04,106 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:33:04,550 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-09-10 07:33:05,020 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:33:05,419 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:33:05,631 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 07:33:06,121 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:33:06,665 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:33:06,929 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 07:33:07,455 WARN L188 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2019-09-10 07:33:07,754 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-09-10 07:33:08,264 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-09-10 07:33:08,715 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2019-09-10 07:33:09,038 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-09-10 07:33:09,404 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-09-10 07:33:09,822 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-10 07:33:10,299 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2019-09-10 07:33:10,868 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:33:11,241 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:33:11,591 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 07:33:12,066 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:33:12,397 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2019-09-10 07:33:12,804 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:33:13,148 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:33:13,529 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:33:13,844 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2019-09-10 07:33:14,198 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:33:14,662 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:33:14,872 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 07:33:15,200 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 07:33:15,402 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:33:15,734 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-10 07:33:16,106 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-09-10 07:33:16,468 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2019-09-10 07:33:17,036 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-09-10 07:33:17,222 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-10 07:33:17,628 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2019-09-10 07:33:18,126 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2019-09-10 07:33:18,626 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:33:19,044 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2019-09-10 07:33:19,581 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2019-09-10 07:33:20,163 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:33:20,525 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-10 07:33:20,807 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 07:33:21,263 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2019-09-10 07:33:21,692 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 07:33:22,384 WARN L188 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-10 07:33:22,946 WARN L188 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2019-09-10 07:33:23,246 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:33:23,573 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2019-09-10 07:33:23,919 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2019-09-10 07:33:24,247 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-10 07:33:24,557 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2019-09-10 07:33:24,892 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2019-09-10 07:33:25,314 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-10 07:33:25,837 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:33:26,072 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:33:26,567 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 07:33:26,853 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2019-09-10 07:33:27,184 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:33:27,427 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 07:33:27,607 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2019-09-10 07:33:28,087 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2019-09-10 07:33:28,774 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:33:29,093 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 07:33:29,509 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2019-09-10 07:33:29,804 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 07:33:30,221 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:33:30,635 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 67 [2019-09-10 07:33:30,968 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-09-10 07:33:31,416 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2019-09-10 07:33:31,704 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2019-09-10 07:33:32,288 WARN L188 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2019-09-10 07:33:32,747 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2019-09-10 07:33:33,129 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-10 07:33:33,779 WARN L188 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 73 [2019-09-10 07:33:34,426 WARN L188 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2019-09-10 07:33:34,717 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:33:34,961 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 07:33:35,486 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2019-09-10 07:33:36,034 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2019-09-10 07:33:36,469 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2019-09-10 07:33:37,144 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:33:37,422 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:33:37,715 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 07:33:38,092 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2019-09-10 07:33:38,368 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 07:33:38,902 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2019-09-10 07:33:39,151 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-10 07:33:39,553 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:33:39,907 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2019-09-10 07:33:40,353 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-10 07:33:40,854 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:33:41,070 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-10 07:33:41,439 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-10 07:33:41,754 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 07:33:42,015 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 48 [2019-09-10 07:33:42,462 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2019-09-10 07:33:42,950 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2019-09-10 07:33:43,134 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:33:43,722 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2019-09-10 07:33:44,164 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2019-09-10 07:33:44,883 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:33:45,396 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:33:45,718 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2019-09-10 07:33:46,220 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2019-09-10 07:33:46,508 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 07:33:46,875 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2019-09-10 07:33:47,261 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 67 [2019-09-10 07:33:47,503 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2019-09-10 07:33:47,822 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2019-09-10 07:33:48,337 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2019-09-10 07:33:49,165 WARN L188 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 75 [2019-09-10 07:33:49,787 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 73 [2019-09-10 07:33:50,365 WARN L188 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2019-09-10 07:33:50,611 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 07:33:50,852 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-10 07:33:51,075 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 07:33:51,459 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:33:51,925 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2019-09-10 07:33:52,611 WARN L188 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2019-09-10 07:33:53,174 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2019-09-10 07:33:53,437 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:33:53,700 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-10 07:33:54,047 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:33:54,352 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:33:54,750 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2019-09-10 07:33:54,970 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-10 07:33:55,297 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-10 07:33:55,500 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:33:55,797 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:33:56,181 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2019-09-10 07:33:56,397 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-10 07:33:56,844 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2019-09-10 07:33:57,221 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:33:57,569 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2019-09-10 07:33:58,131 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2019-09-10 07:33:58,672 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2019-09-10 07:33:58,852 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:33:59,264 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 07:33:59,626 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:33:59,943 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 07:34:00,162 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2019-09-10 07:34:00,619 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:34:00,806 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:34:01,207 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2019-09-10 07:34:01,992 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:34:02,374 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2019-09-10 07:34:02,582 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-10 07:34:02,956 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2019-09-10 07:34:03,219 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2019-09-10 07:34:03,986 WARN L188 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 75 [2019-09-10 07:34:04,236 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2019-09-10 07:34:04,599 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:34:04,955 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 07:34:05,373 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:34:06,202 WARN L188 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 96 [2019-09-10 07:34:06,448 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 07:34:06,718 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-10 07:34:07,065 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:34:07,550 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2019-09-10 07:34:08,047 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 73 [2019-09-10 07:34:08,441 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2019-09-10 07:34:08,718 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 07:34:09,004 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-10 07:34:09,212 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:34:09,381 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-09-10 07:34:09,591 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 07:34:10,005 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2019-09-10 07:34:10,632 WARN L188 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 76 [2019-09-10 07:34:11,181 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2019-09-10 07:34:11,666 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2019-09-10 07:34:11,837 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-10 07:34:11,999 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-09-10 07:34:12,360 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-10 07:34:12,694 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 07:34:13,128 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2019-09-10 07:34:13,621 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 07:34:13,783 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:34:14,025 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:34:14,328 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2019-09-10 07:34:14,749 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 07:34:15,143 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:34:15,495 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 07:34:15,769 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-10 07:34:16,248 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 73 [2019-09-10 07:34:16,520 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 07:34:17,328 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 76 [2019-09-10 07:34:17,512 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-10 07:34:17,759 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:34:18,015 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:34:18,338 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 07:34:18,969 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2019-09-10 07:34:19,151 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-10 07:34:19,397 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:34:19,819 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:34:20,354 WARN L188 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2019-09-10 07:34:20,901 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 60 [2019-09-10 07:34:21,361 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2019-09-10 07:34:21,934 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 07:34:22,308 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:34:22,570 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:34:22,802 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2019-09-10 07:34:23,225 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-10 07:34:23,616 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 60 [2019-09-10 07:34:24,100 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2019-09-10 07:34:24,698 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2019-09-10 07:34:25,141 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-10 07:34:25,527 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-10 07:34:25,890 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:34:26,138 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2019-09-10 07:34:26,368 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2019-09-10 07:34:26,691 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:34:27,514 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:34:27,877 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2019-09-10 07:34:28,122 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-10 07:34:28,346 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:34:28,706 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2019-09-10 07:34:28,958 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-09-10 07:34:29,519 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:34:30,195 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2019-09-10 07:34:30,558 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2019-09-10 07:34:30,937 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-10 07:34:31,306 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:34:31,774 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:34:32,245 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2019-09-10 07:34:32,530 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-09-10 07:34:32,968 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 07:34:33,241 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-09-10 07:34:33,599 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2019-09-10 07:34:33,928 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2019-09-10 07:34:34,370 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-09-10 07:34:34,860 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:34:35,153 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-10 07:34:35,520 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:34:35,827 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-09-10 07:34:36,159 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 07:34:36,365 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 07:34:36,811 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2019-09-10 07:34:37,195 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2019-09-10 07:34:37,667 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-09-10 07:34:38,163 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:34:38,499 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2019-09-10 07:34:38,873 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2019-09-10 07:34:39,312 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-09-10 07:34:39,829 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2019-09-10 07:34:40,224 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 07:34:40,490 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 07:34:41,002 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2019-09-10 07:34:41,347 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2019-09-10 07:34:41,734 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2019-09-10 07:34:42,258 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:34:42,797 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2019-09-10 07:34:43,105 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2019-09-10 07:34:43,445 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2019-09-10 07:34:43,805 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2019-09-10 07:34:44,249 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2019-09-10 07:34:44,433 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2019-09-10 07:34:44,662 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2019-09-10 07:34:45,077 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 07:34:45,294 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:34:45,793 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2019-09-10 07:34:46,248 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2019-09-10 07:34:46,897 WARN L188 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:34:47,427 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:34:47,923 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2019-09-10 07:34:48,379 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2019-09-10 07:34:48,868 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2019-09-10 07:34:49,031 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2019-09-10 07:34:49,400 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2019-09-10 07:34:49,591 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2019-09-10 07:34:49,866 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2019-09-10 07:34:50,434 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 07:34:50,880 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:34:51,531 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:34:52,215 WARN L188 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 92 [2019-09-10 07:34:52,583 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2019-09-10 07:34:53,068 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:34:53,796 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-10 07:34:54,103 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-10 07:34:54,326 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-10 07:34:54,561 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 07:34:55,219 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2019-09-10 07:34:55,517 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-10 07:34:55,837 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-10 07:34:56,237 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-10 07:34:56,460 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-10 07:34:56,687 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 07:34:56,997 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-10 07:34:57,329 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2019-09-10 07:34:57,634 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-10 07:34:57,876 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:34:58,176 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 07:34:58,459 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:34:58,710 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:34:58,932 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:34:59,199 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:34:59,425 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:34:59,949 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 07:35:00,242 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:35:00,894 WARN L188 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2019-09-10 07:35:01,213 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-10 07:35:01,455 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:35:01,706 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-10 07:35:02,101 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:35:02,328 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:35:02,625 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-10 07:35:03,046 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 07:35:03,436 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:35:03,823 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:35:04,201 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-10 07:35:04,455 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:35:04,812 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:35:05,028 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-10 07:35:05,335 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 07:35:05,792 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2019-09-10 07:35:06,089 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 07:35:06,384 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:35:06,789 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:35:07,061 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:35:07,406 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:35:07,661 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:35:08,016 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:35:08,260 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:35:08,585 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2019-09-10 07:35:08,926 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2019-09-10 07:35:09,385 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 07:35:09,835 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 07:35:10,154 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-10 07:35:10,433 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:35:10,811 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:35:11,097 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:35:11,379 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-10 07:35:11,729 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-10 07:35:12,093 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-10 07:35:12,352 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:35:12,608 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:35:12,994 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:35:13,218 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:35:13,477 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:35:13,874 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2019-09-10 07:35:14,294 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 07:35:14,570 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 07:35:15,055 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2019-09-10 07:35:15,514 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2019-09-10 07:35:15,812 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 07:35:16,113 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-09-10 07:35:16,396 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:35:16,731 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 07:35:17,117 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:35:17,410 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:35:17,678 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 07:35:17,890 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-10 07:35:18,154 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-10 07:35:18,430 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-09-10 07:35:18,657 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-10 07:35:19,057 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:35:19,325 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:35:19,767 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 07:35:20,166 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:35:20,407 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:35:20,934 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:35:21,427 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2019-09-10 07:35:21,890 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2019-09-10 07:35:22,215 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-10 07:35:22,541 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2019-09-10 07:35:22,955 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-10 07:35:23,216 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 07:35:23,630 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2019-09-10 07:35:24,033 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2019-09-10 07:35:24,308 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:35:24,598 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 07:35:24,845 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-10 07:35:25,026 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-10 07:35:25,263 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-09-10 07:35:25,674 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:35:26,061 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-10 07:35:26,255 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:35:26,445 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 07:35:26,955 WARN L188 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 07:35:27,395 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 07:35:27,769 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:35:27,992 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-09-10 07:35:28,183 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:35:28,421 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 07:35:29,051 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:35:29,543 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:35:30,000 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2019-09-10 07:35:30,431 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2019-09-10 07:35:30,746 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 07:35:31,011 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-10 07:35:31,489 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 07:35:31,925 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:35:32,266 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:35:32,455 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:35:32,636 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:35:32,836 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 07:35:33,192 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 07:35:33,647 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 07:35:33,853 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2019-09-10 07:35:34,032 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:35:34,309 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:35:34,957 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:35:35,415 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 07:35:35,607 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:35:35,906 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:35:36,201 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:35:36,734 WARN L188 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 07:35:36,933 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:35:37,135 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 07:35:37,420 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:35:37,762 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:35:38,078 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:35:38,287 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 07:35:38,787 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:35:38,992 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:35:39,224 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2019-09-10 07:35:39,571 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 07:35:39,812 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2019-09-10 07:35:40,193 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 07:35:41,498 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:35:41,901 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:35:42,190 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:35:42,614 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-10 07:35:42,948 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:35:43,232 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:35:43,484 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:35:43,742 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-10 07:35:44,053 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:44,353 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:44,574 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:44,823 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:45,116 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:35:45,374 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:35:45,729 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:45,969 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 07:35:46,382 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:46,646 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-10 07:35:46,862 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:47,213 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:47,487 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:47,878 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:48,112 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:35:48,433 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:48,649 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:48,921 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:35:49,401 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:51,611 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:35:51,863 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 07:35:52,082 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:35:52,314 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:35:52,672 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:52,917 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 07:35:53,206 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-10 07:35:53,574 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:35:53,848 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:35:54,241 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:35:54,508 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-10 07:35:54,795 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 07:35:55,024 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:35:55,425 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:35:55,783 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:35:56,001 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:35:56,319 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-10 07:35:56,587 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:35:57,065 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:35:57,484 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:35:57,737 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:35:58,165 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:35:58,568 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:35:58,913 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:35:59,153 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 07:35:59,712 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:36:00,201 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:36:00,614 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:36:00,871 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 07:36:01,301 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:36:01,817 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:36:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:36:01,898 INFO L93 Difference]: Finished difference Result 284048 states and 374702 transitions. [2019-09-10 07:36:01,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 763 states. [2019-09-10 07:36:01,898 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 67 [2019-09-10 07:36:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:36:02,511 INFO L225 Difference]: With dead ends: 284048 [2019-09-10 07:36:02,511 INFO L226 Difference]: Without dead ends: 284048 [2019-09-10 07:36:02,561 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293632 ImplicationChecksByTransitivity, 232.6s TimeCoverageRelationStatistics Valid=60554, Invalid=569088, Unknown=0, NotChecked=0, Total=629642 [2019-09-10 07:36:02,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284048 states. [2019-09-10 07:36:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284048 to 44972. [2019-09-10 07:36:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44972 states. [2019-09-10 07:36:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44972 states to 44972 states and 60978 transitions. [2019-09-10 07:36:04,469 INFO L78 Accepts]: Start accepts. Automaton has 44972 states and 60978 transitions. Word has length 67 [2019-09-10 07:36:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:36:04,469 INFO L475 AbstractCegarLoop]: Abstraction has 44972 states and 60978 transitions. [2019-09-10 07:36:04,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-10 07:36:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 44972 states and 60978 transitions. [2019-09-10 07:36:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 07:36:04,472 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:36:04,473 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:36:04,473 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:36:04,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:36:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1602445283, now seen corresponding path program 1 times [2019-09-10 07:36:04,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:36:04,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:36:04,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:36:04,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:36:04,475 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:36:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:36:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:36:05,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:36:05,390 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:36:05,391 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 68 with the following transitions: [2019-09-10 07:36:05,391 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:36:05,395 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:36:05,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:36:05,404 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:36:05,553 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:36:05,554 INFO L272 AbstractInterpreter]: Visited 62 different actions 403 times. Merged at 39 different actions 302 times. Widened at 10 different actions 43 times. Performed 1441 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1441 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 35 fixpoints after 12 different actions. Largest state had 90 variables. [2019-09-10 07:36:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:36:05,554 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:36:05,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:36:05,555 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 07:36:05,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:36:05,572 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 07:36:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:36:05,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 43 conjunts are in the unsatisfiable core [2019-09-10 07:36:05,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:36:06,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:36:06,726 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:36:06,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 07:36:06,968 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-09-10 07:36:07,242 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-09-10 07:36:07,576 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 07:36:07,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:36:08,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:36:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:36:08,355 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:36:09,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:36:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:36:10,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:36:10,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 57 [2019-09-10 07:36:10,164 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:36:10,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-10 07:36:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-10 07:36:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2897, Unknown=0, NotChecked=0, Total=3192 [2019-09-10 07:36:10,166 INFO L87 Difference]: Start difference. First operand 44972 states and 60978 transitions. Second operand 38 states. [2019-09-10 07:36:11,717 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2019-09-10 07:36:11,968 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2019-09-10 07:36:12,198 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2019-09-10 07:36:12,497 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2019-09-10 07:36:12,916 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2019-09-10 07:36:13,669 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2019-09-10 07:36:13,886 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2019-09-10 07:36:14,494 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2019-09-10 07:36:14,884 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2019-09-10 07:36:15,906 WARN L188 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2019-09-10 07:36:16,291 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2019-09-10 07:36:17,135 WARN L188 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2019-09-10 07:36:17,706 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 86 [2019-09-10 07:36:18,161 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2019-09-10 07:36:18,566 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 07:36:18,847 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2019-09-10 07:36:19,002 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2019-09-10 07:36:19,441 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2019-09-10 07:36:20,893 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2019-09-10 07:36:21,244 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-10 07:36:21,929 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 88 [2019-09-10 07:36:22,136 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2019-09-10 07:36:22,916 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-10 07:36:23,255 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2019-09-10 07:36:23,872 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 90 [2019-09-10 07:36:24,095 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2019-09-10 07:36:24,751 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2019-09-10 07:36:25,309 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 07:36:25,736 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:36:26,492 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-10 07:36:26,861 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2019-09-10 07:36:27,657 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:36:28,652 WARN L188 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 92 [2019-09-10 07:36:29,233 WARN L188 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 90 [2019-09-10 07:36:31,328 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2019-09-10 07:36:31,687 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 07:36:31,949 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-10 07:36:34,981 WARN L188 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 100 [2019-09-10 07:36:35,418 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-09-10 07:36:36,371 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2019-09-10 07:36:36,613 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 07:36:37,265 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:36:37,488 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2019-09-10 07:36:39,505 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2019-09-10 07:36:39,855 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-10 07:36:40,120 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-09-10 07:36:40,444 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2019-09-10 07:36:40,647 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2019-09-10 07:36:42,057 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 07:36:42,767 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-10 07:36:43,090 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-10 07:36:43,390 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2019-09-10 07:36:43,731 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2019-09-10 07:36:44,041 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 07:36:44,266 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-10 07:36:44,453 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-10 07:36:44,993 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 07:36:45,431 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 07:36:45,837 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 07:36:46,182 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2019-09-10 07:36:46,351 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2019-09-10 07:36:46,836 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2019-09-10 07:36:47,311 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:36:47,545 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2019-09-10 07:36:47,830 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 07:36:48,282 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 07:36:48,752 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2019-09-10 07:36:49,125 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 07:36:50,488 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2019-09-10 07:36:51,013 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2019-09-10 07:36:51,385 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-10 07:36:51,894 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2019-09-10 07:36:52,321 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-10 07:36:52,901 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2019-09-10 07:36:53,300 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-09-10 07:36:53,504 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2019-09-10 07:36:53,865 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2019-09-10 07:36:54,106 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-09-10 07:36:54,653 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2019-09-10 07:36:54,911 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 07:36:55,580 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2019-09-10 07:36:55,853 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2019-09-10 07:36:56,236 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 07:36:57,160 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2019-09-10 07:36:57,670 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2019-09-10 07:36:58,037 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2019-09-10 07:36:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:36:58,121 INFO L93 Difference]: Finished difference Result 111045 states and 148372 transitions. [2019-09-10 07:36:58,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2019-09-10 07:36:58,121 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 67 [2019-09-10 07:36:58,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:36:58,272 INFO L225 Difference]: With dead ends: 111045 [2019-09-10 07:36:58,272 INFO L226 Difference]: Without dead ends: 111045 [2019-09-10 07:36:58,275 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13899 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=6649, Invalid=34762, Unknown=1, NotChecked=0, Total=41412 [2019-09-10 07:36:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111045 states. [2019-09-10 07:36:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111045 to 48784. [2019-09-10 07:36:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48784 states. [2019-09-10 07:36:59,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48784 states to 48784 states and 66461 transitions. [2019-09-10 07:36:59,360 INFO L78 Accepts]: Start accepts. Automaton has 48784 states and 66461 transitions. Word has length 67 [2019-09-10 07:36:59,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:36:59,360 INFO L475 AbstractCegarLoop]: Abstraction has 48784 states and 66461 transitions. [2019-09-10 07:36:59,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-10 07:36:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 48784 states and 66461 transitions. [2019-09-10 07:36:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 07:36:59,363 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:36:59,364 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:36:59,364 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:36:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:36:59,365 INFO L82 PathProgramCache]: Analyzing trace with hash 871871289, now seen corresponding path program 1 times [2019-09-10 07:36:59,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:36:59,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:36:59,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:36:59,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:36:59,366 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:36:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:36:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:36:59,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:36:59,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:36:59,408 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:36:59,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:36:59,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:36:59,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:36:59,409 INFO L87 Difference]: Start difference. First operand 48784 states and 66461 transitions. Second operand 3 states. [2019-09-10 07:36:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:36:59,543 INFO L93 Difference]: Finished difference Result 40349 states and 54176 transitions. [2019-09-10 07:36:59,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:36:59,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-10 07:36:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:36:59,589 INFO L225 Difference]: With dead ends: 40349 [2019-09-10 07:36:59,590 INFO L226 Difference]: Without dead ends: 40349 [2019-09-10 07:36:59,590 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 07:36:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40349 states. [2019-09-10 07:36:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40349 to 40349. [2019-09-10 07:36:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40349 states. [2019-09-10 07:36:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40349 states to 40349 states and 54176 transitions. [2019-09-10 07:36:59,967 INFO L78 Accepts]: Start accepts. Automaton has 40349 states and 54176 transitions. Word has length 67 [2019-09-10 07:36:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:36:59,967 INFO L475 AbstractCegarLoop]: Abstraction has 40349 states and 54176 transitions. [2019-09-10 07:36:59,967 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:36:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 40349 states and 54176 transitions. [2019-09-10 07:36:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:36:59,969 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:36:59,970 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:36:59,970 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:36:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:36:59,970 INFO L82 PathProgramCache]: Analyzing trace with hash -217937935, now seen corresponding path program 1 times [2019-09-10 07:36:59,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:36:59,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:36:59,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:36:59,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:36:59,972 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:00,036 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 07:37:00,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:37:00,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:37:00,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:37:00,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:37:00,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:37:00,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:37:00,037 INFO L87 Difference]: Start difference. First operand 40349 states and 54176 transitions. Second operand 3 states. [2019-09-10 07:37:00,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:00,126 INFO L93 Difference]: Finished difference Result 38817 states and 50875 transitions. [2019-09-10 07:37:00,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:37:00,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-10 07:37:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:00,167 INFO L225 Difference]: With dead ends: 38817 [2019-09-10 07:37:00,168 INFO L226 Difference]: Without dead ends: 38817 [2019-09-10 07:37:00,168 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 07:37:00,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38817 states. [2019-09-10 07:37:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38817 to 37570. [2019-09-10 07:37:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37570 states. [2019-09-10 07:37:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37570 states to 37570 states and 49629 transitions. [2019-09-10 07:37:00,461 INFO L78 Accepts]: Start accepts. Automaton has 37570 states and 49629 transitions. Word has length 68 [2019-09-10 07:37:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:00,461 INFO L475 AbstractCegarLoop]: Abstraction has 37570 states and 49629 transitions. [2019-09-10 07:37:00,461 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:37:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 37570 states and 49629 transitions. [2019-09-10 07:37:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:37:00,463 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:00,463 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:37:00,463 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1310845681, now seen corresponding path program 1 times [2019-09-10 07:37:00,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:00,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:00,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:00,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:00,464 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:00,500 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 07:37:00,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:37:00,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:37:00,500 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:37:00,500 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:37:00,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:37:00,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:37:00,501 INFO L87 Difference]: Start difference. First operand 37570 states and 49629 transitions. Second operand 3 states. [2019-09-10 07:37:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:00,544 INFO L93 Difference]: Finished difference Result 17125 states and 22096 transitions. [2019-09-10 07:37:00,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:37:00,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-10 07:37:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:00,562 INFO L225 Difference]: With dead ends: 17125 [2019-09-10 07:37:00,562 INFO L226 Difference]: Without dead ends: 17125 [2019-09-10 07:37:00,562 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 07:37:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17125 states. [2019-09-10 07:37:00,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17125 to 17123. [2019-09-10 07:37:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17123 states. [2019-09-10 07:37:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17123 states to 17123 states and 22095 transitions. [2019-09-10 07:37:00,724 INFO L78 Accepts]: Start accepts. Automaton has 17123 states and 22095 transitions. Word has length 68 [2019-09-10 07:37:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:00,726 INFO L475 AbstractCegarLoop]: Abstraction has 17123 states and 22095 transitions. [2019-09-10 07:37:00,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:37:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 17123 states and 22095 transitions. [2019-09-10 07:37:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:37:00,728 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:00,728 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] [2019-09-10 07:37:00,729 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:00,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:00,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2039229901, now seen corresponding path program 1 times [2019-09-10 07:37:00,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:00,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:00,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:00,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:00,730 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:00,758 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 07:37:00,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:37:00,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:37:00,758 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:37:00,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:37:00,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:37:00,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:37:00,759 INFO L87 Difference]: Start difference. First operand 17123 states and 22095 transitions. Second operand 3 states. [2019-09-10 07:37:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:00,825 INFO L93 Difference]: Finished difference Result 13644 states and 17365 transitions. [2019-09-10 07:37:00,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:37:00,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-10 07:37:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:00,839 INFO L225 Difference]: With dead ends: 13644 [2019-09-10 07:37:00,840 INFO L226 Difference]: Without dead ends: 13644 [2019-09-10 07:37:00,840 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 07:37:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13644 states. [2019-09-10 07:37:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13644 to 13644. [2019-09-10 07:37:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13644 states. [2019-09-10 07:37:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13644 states to 13644 states and 17365 transitions. [2019-09-10 07:37:00,970 INFO L78 Accepts]: Start accepts. Automaton has 13644 states and 17365 transitions. Word has length 68 [2019-09-10 07:37:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:00,971 INFO L475 AbstractCegarLoop]: Abstraction has 13644 states and 17365 transitions. [2019-09-10 07:37:00,971 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:37:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 13644 states and 17365 transitions. [2019-09-10 07:37:00,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:37:00,972 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:00,973 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] [2019-09-10 07:37:00,973 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:00,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:00,973 INFO L82 PathProgramCache]: Analyzing trace with hash 59080277, now seen corresponding path program 1 times [2019-09-10 07:37:00,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:00,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:00,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:00,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:00,974 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:02,220 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 07:37:02,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:02,220 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:37:02,221 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 70 with the following transitions: [2019-09-10 07:37:02,221 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [155], [160], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:37:02,223 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:37:02,223 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:37:02,231 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:37:02,392 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:37:02,392 INFO L272 AbstractInterpreter]: Visited 62 different actions 420 times. Merged at 39 different actions 318 times. Widened at 12 different actions 42 times. Performed 1485 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1485 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 14 different actions. Largest state had 90 variables. [2019-09-10 07:37:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:02,393 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:37:02,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:02,393 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) [2019-09-10 07:37:02,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:02,412 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:37:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:02,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-10 07:37:02,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:37:02,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:03,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:03,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:03,830 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 07:37:03,830 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:37:04,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:04,667 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 07:37:04,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:37:04,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 14] total 48 [2019-09-10 07:37:04,671 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:37:04,671 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-10 07:37:04,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-10 07:37:04,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2086, Unknown=0, NotChecked=0, Total=2256 [2019-09-10 07:37:04,672 INFO L87 Difference]: Start difference. First operand 13644 states and 17365 transitions. Second operand 36 states. [2019-09-10 07:37:05,762 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2019-09-10 07:37:05,996 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-10 07:37:06,191 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 07:37:06,417 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-10 07:37:06,654 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 07:37:06,912 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 07:37:07,296 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2019-09-10 07:37:07,611 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 07:37:07,806 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 07:37:08,124 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 07:37:08,373 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:37:08,564 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2019-09-10 07:37:08,899 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:37:09,211 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 07:37:09,419 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 40 [2019-09-10 07:37:09,770 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:37:10,271 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-10 07:37:10,584 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-10 07:37:10,743 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-09-10 07:37:10,943 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 36 [2019-09-10 07:37:11,216 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-10 07:37:11,536 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-10 07:37:13,337 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:37:14,250 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-10 07:37:14,454 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-10 07:37:14,905 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 07:37:15,074 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2019-09-10 07:37:15,291 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-10 07:37:15,653 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 07:37:15,991 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:37:16,320 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 07:37:16,602 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:37:16,913 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 07:37:17,282 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2019-09-10 07:37:17,687 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2019-09-10 07:37:17,889 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:37:18,191 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 07:37:18,392 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:37:18,622 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:37:18,838 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 07:37:19,015 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:37:19,223 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:37:19,415 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:37:19,656 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:37:19,847 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:37:20,061 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:37:20,231 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-10 07:37:20,594 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:37:21,035 WARN L188 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:37:21,235 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-10 07:37:21,469 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:37:21,726 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 07:37:21,987 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:37:22,250 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:37:22,446 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:37:22,722 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:37:22,938 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 07:37:23,162 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:37:23,372 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 07:37:23,656 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:37:23,850 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:37:24,071 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 07:37:24,328 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:37:24,610 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 07:37:24,762 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 07:37:25,005 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 07:37:25,258 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 07:37:25,587 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:37:25,789 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 07:37:26,179 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-09-10 07:37:26,555 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-10 07:37:26,739 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:37:26,992 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 07:37:27,186 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:37:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:27,279 INFO L93 Difference]: Finished difference Result 24307 states and 31190 transitions. [2019-09-10 07:37:27,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-09-10 07:37:27,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2019-09-10 07:37:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:27,303 INFO L225 Difference]: With dead ends: 24307 [2019-09-10 07:37:27,303 INFO L226 Difference]: Without dead ends: 24307 [2019-09-10 07:37:27,304 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7007 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=3321, Invalid=19631, Unknown=0, NotChecked=0, Total=22952 [2019-09-10 07:37:27,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24307 states. [2019-09-10 07:37:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24307 to 16101. [2019-09-10 07:37:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16101 states. [2019-09-10 07:37:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16101 states to 16101 states and 20613 transitions. [2019-09-10 07:37:27,448 INFO L78 Accepts]: Start accepts. Automaton has 16101 states and 20613 transitions. Word has length 69 [2019-09-10 07:37:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:27,448 INFO L475 AbstractCegarLoop]: Abstraction has 16101 states and 20613 transitions. [2019-09-10 07:37:27,449 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-10 07:37:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 16101 states and 20613 transitions. [2019-09-10 07:37:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:37:27,449 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:27,450 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] [2019-09-10 07:37:27,450 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:27,450 INFO L82 PathProgramCache]: Analyzing trace with hash -156963844, now seen corresponding path program 1 times [2019-09-10 07:37:27,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:27,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:27,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:27,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:27,451 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:28,336 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 07:37:28,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:28,336 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:37:28,336 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 70 with the following transitions: [2019-09-10 07:37:28,338 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [135], [139], [142], [145], [147], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:37:28,339 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:37:28,340 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:37:28,348 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:37:28,517 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:37:28,518 INFO L272 AbstractInterpreter]: Visited 62 different actions 410 times. Merged at 39 different actions 309 times. Widened at 9 different actions 34 times. Performed 1470 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1470 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 37 fixpoints after 10 different actions. Largest state had 90 variables. [2019-09-10 07:37:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:28,518 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:37:28,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:28,518 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) [2019-09-10 07:37:28,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:28,542 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:37:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:28,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-10 07:37:28,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:37:28,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:29,125 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 07:37:29,125 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:37:29,646 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 07:37:29,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:37:29,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 38 [2019-09-10 07:37:29,659 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:37:29,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 07:37:29,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 07:37:29,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2019-09-10 07:37:29,659 INFO L87 Difference]: Start difference. First operand 16101 states and 20613 transitions. Second operand 28 states. [2019-09-10 07:37:30,729 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2019-09-10 07:37:30,890 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2019-09-10 07:37:31,145 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2019-09-10 07:37:31,438 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2019-09-10 07:37:31,729 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2019-09-10 07:37:32,039 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2019-09-10 07:37:32,331 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2019-09-10 07:37:32,764 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2019-09-10 07:37:32,993 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2019-09-10 07:37:33,282 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2019-09-10 07:37:33,556 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2019-09-10 07:37:33,743 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2019-09-10 07:37:34,003 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-10 07:37:34,258 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-10 07:37:35,326 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 28 [2019-09-10 07:37:35,576 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2019-09-10 07:37:36,104 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2019-09-10 07:37:36,405 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 34 [2019-09-10 07:37:36,714 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2019-09-10 07:37:37,133 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2019-09-10 07:37:37,285 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2019-09-10 07:37:37,496 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2019-09-10 07:37:37,761 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-09-10 07:37:37,938 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-10 07:37:38,187 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-09-10 07:37:38,373 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-10 07:37:38,642 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-09-10 07:37:39,036 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 07:37:39,313 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2019-09-10 07:37:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:39,793 INFO L93 Difference]: Finished difference Result 24706 states and 31293 transitions. [2019-09-10 07:37:39,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-10 07:37:39,793 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 69 [2019-09-10 07:37:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:39,813 INFO L225 Difference]: With dead ends: 24706 [2019-09-10 07:37:39,814 INFO L226 Difference]: Without dead ends: 24706 [2019-09-10 07:37:39,814 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1465, Invalid=5845, Unknown=0, NotChecked=0, Total=7310 [2019-09-10 07:37:39,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24706 states. [2019-09-10 07:37:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24706 to 12649. [2019-09-10 07:37:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12649 states. [2019-09-10 07:37:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12649 states to 12649 states and 16075 transitions. [2019-09-10 07:37:39,950 INFO L78 Accepts]: Start accepts. Automaton has 12649 states and 16075 transitions. Word has length 69 [2019-09-10 07:37:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:39,950 INFO L475 AbstractCegarLoop]: Abstraction has 12649 states and 16075 transitions. [2019-09-10 07:37:39,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 07:37:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12649 states and 16075 transitions. [2019-09-10 07:37:39,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:37:39,951 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:39,952 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:37:39,952 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:39,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:39,952 INFO L82 PathProgramCache]: Analyzing trace with hash -723465889, now seen corresponding path program 1 times [2019-09-10 07:37:39,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:39,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:39,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:39,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:39,954 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:40,000 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 07:37:40,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:37:40,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:37:40,001 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:37:40,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:37:40,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:37:40,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:37:40,002 INFO L87 Difference]: Start difference. First operand 12649 states and 16075 transitions. Second operand 3 states. [2019-09-10 07:37:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:40,023 INFO L93 Difference]: Finished difference Result 3903 states and 4928 transitions. [2019-09-10 07:37:40,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:37:40,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-09-10 07:37:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:40,027 INFO L225 Difference]: With dead ends: 3903 [2019-09-10 07:37:40,027 INFO L226 Difference]: Without dead ends: 3903 [2019-09-10 07:37:40,027 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 07:37:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2019-09-10 07:37:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3757. [2019-09-10 07:37:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3757 states. [2019-09-10 07:37:40,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 4771 transitions. [2019-09-10 07:37:40,060 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 4771 transitions. Word has length 69 [2019-09-10 07:37:40,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:40,061 INFO L475 AbstractCegarLoop]: Abstraction has 3757 states and 4771 transitions. [2019-09-10 07:37:40,061 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:37:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 4771 transitions. [2019-09-10 07:37:40,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:37:40,062 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:40,062 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] [2019-09-10 07:37:40,062 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:40,063 INFO L82 PathProgramCache]: Analyzing trace with hash -628683308, now seen corresponding path program 1 times [2019-09-10 07:37:40,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:40,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:40,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:40,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:40,064 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:40,096 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 07:37:40,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:37:40,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:37:40,096 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:37:40,097 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:37:40,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:37:40,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:37:40,097 INFO L87 Difference]: Start difference. First operand 3757 states and 4771 transitions. Second operand 3 states. [2019-09-10 07:37:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:40,123 INFO L93 Difference]: Finished difference Result 2504 states and 3148 transitions. [2019-09-10 07:37:40,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:37:40,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-09-10 07:37:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:40,126 INFO L225 Difference]: With dead ends: 2504 [2019-09-10 07:37:40,126 INFO L226 Difference]: Without dead ends: 2504 [2019-09-10 07:37:40,126 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 07:37:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2019-09-10 07:37:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2504. [2019-09-10 07:37:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2504 states. [2019-09-10 07:37:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3148 transitions. [2019-09-10 07:37:40,146 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3148 transitions. Word has length 69 [2019-09-10 07:37:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:40,146 INFO L475 AbstractCegarLoop]: Abstraction has 2504 states and 3148 transitions. [2019-09-10 07:37:40,146 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:37:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3148 transitions. [2019-09-10 07:37:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 07:37:40,147 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:40,147 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] [2019-09-10 07:37:40,148 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1308029272, now seen corresponding path program 1 times [2019-09-10 07:37:40,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:40,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:40,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:40,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:40,150 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:40,816 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 07:37:40,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:40,816 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:37:40,816 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 71 with the following transitions: [2019-09-10 07:37:40,817 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [135], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [180], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:37:40,824 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:37:40,825 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:37:40,833 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:37:41,045 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:37:41,045 INFO L272 AbstractInterpreter]: Visited 63 different actions 474 times. Merged at 40 different actions 363 times. Widened at 12 different actions 46 times. Performed 1728 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1728 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 44 fixpoints after 14 different actions. Largest state had 90 variables. [2019-09-10 07:37:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:41,045 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:37:41,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:41,046 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 07:37:41,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:41,060 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 07:37:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:41,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-10 07:37:41,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:37:41,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:41,801 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 07:37:41,801 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:37:42,336 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 07:37:42,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:37:42,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 42 [2019-09-10 07:37:42,340 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:37:42,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-10 07:37:42,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-10 07:37:42,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2019-09-10 07:37:42,341 INFO L87 Difference]: Start difference. First operand 2504 states and 3148 transitions. Second operand 32 states. [2019-09-10 07:37:42,531 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 07:37:43,662 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 07:37:43,977 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-10 07:37:44,301 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-10 07:37:44,708 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2019-09-10 07:37:45,106 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2019-09-10 07:37:45,301 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 07:37:45,497 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 07:37:45,864 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 07:37:46,221 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 07:37:46,646 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-09-10 07:37:47,915 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2019-09-10 07:37:48,838 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2019-09-10 07:37:49,365 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 07:37:51,252 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-09-10 07:37:52,004 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-10 07:37:52,218 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-09-10 07:37:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:52,464 INFO L93 Difference]: Finished difference Result 3968 states and 5007 transitions. [2019-09-10 07:37:52,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-09-10 07:37:52,465 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 70 [2019-09-10 07:37:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:52,468 INFO L225 Difference]: With dead ends: 3968 [2019-09-10 07:37:52,468 INFO L226 Difference]: Without dead ends: 3968 [2019-09-10 07:37:52,468 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2151 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1971, Invalid=8949, Unknown=0, NotChecked=0, Total=10920 [2019-09-10 07:37:52,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2019-09-10 07:37:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 2045. [2019-09-10 07:37:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2045 states. [2019-09-10 07:37:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2568 transitions. [2019-09-10 07:37:52,485 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2568 transitions. Word has length 70 [2019-09-10 07:37:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:52,486 INFO L475 AbstractCegarLoop]: Abstraction has 2045 states and 2568 transitions. [2019-09-10 07:37:52,486 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-10 07:37:52,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2568 transitions. [2019-09-10 07:37:52,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-10 07:37:52,488 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:52,488 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:52,488 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:52,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1671026668, now seen corresponding path program 1 times [2019-09-10 07:37:52,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:52,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:52,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:52,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:52,490 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:37:52,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:52,777 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:37:52,778 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 112 with the following transitions: [2019-09-10 07:37:52,778 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [133], [139], [142], [145], [147], [155], [160], [162], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:37:52,779 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:37:52,780 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:37:52,788 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:37:53,030 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:37:53,030 INFO L272 AbstractInterpreter]: Visited 65 different actions 591 times. Merged at 42 different actions 429 times. Widened at 18 different actions 77 times. Performed 2012 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2012 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 80 fixpoints after 20 different actions. Largest state had 90 variables. [2019-09-10 07:37:53,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:53,031 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:37:53,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:53,031 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) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:37:53,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:53,057 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:37:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:53,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 07:37:53,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:37:53,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:53,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:53,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:53,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:37:53,644 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:37:54,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 47 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:37:54,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:37:54,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2019-09-10 07:37:54,207 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:37:54,207 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-10 07:37:54,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-10 07:37:54,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2019-09-10 07:37:54,208 INFO L87 Difference]: Start difference. First operand 2045 states and 2568 transitions. Second operand 22 states. [2019-09-10 07:37:55,625 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-10 07:37:56,204 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-10 07:37:56,560 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 07:37:56,758 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 07:37:56,949 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:37:57,139 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 07:37:57,408 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-09-10 07:37:57,716 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:37:57,930 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2019-09-10 07:37:58,270 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-10 07:37:58,470 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-09-10 07:37:58,795 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:37:58,973 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2019-09-10 07:37:59,131 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-10 07:37:59,292 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 07:37:59,573 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 07:38:00,087 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2019-09-10 07:38:00,267 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:38:00,477 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-10 07:38:00,693 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-10 07:38:00,875 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 07:38:01,036 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-10 07:38:01,196 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 07:38:01,450 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-09-10 07:38:01,625 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:38:01,782 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2019-09-10 07:38:02,121 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-09-10 07:38:02,360 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-09-10 07:38:02,575 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:38:02,770 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 07:38:02,940 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-10 07:38:03,293 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2019-09-10 07:38:03,655 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 07:38:03,889 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2019-09-10 07:38:04,292 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2019-09-10 07:38:04,444 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-10 07:38:04,714 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-09-10 07:38:04,963 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 07:38:05,360 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-10 07:38:05,742 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2019-09-10 07:38:05,913 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 07:38:06,126 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2019-09-10 07:38:06,271 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 07:38:06,596 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2019-09-10 07:38:06,765 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2019-09-10 07:38:07,056 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:38:07,207 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-10 07:38:07,421 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-10 07:38:07,773 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2019-09-10 07:38:08,132 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-09-10 07:38:08,309 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2019-09-10 07:38:08,471 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2019-09-10 07:38:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:38:08,545 INFO L93 Difference]: Finished difference Result 4350 states and 5381 transitions. [2019-09-10 07:38:08,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-09-10 07:38:08,545 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2019-09-10 07:38:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:38:08,548 INFO L225 Difference]: With dead ends: 4350 [2019-09-10 07:38:08,548 INFO L226 Difference]: Without dead ends: 4350 [2019-09-10 07:38:08,549 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2943 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2320, Invalid=9890, Unknown=0, NotChecked=0, Total=12210 [2019-09-10 07:38:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2019-09-10 07:38:08,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 2279. [2019-09-10 07:38:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2019-09-10 07:38:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 2824 transitions. [2019-09-10 07:38:08,568 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 2824 transitions. Word has length 111 [2019-09-10 07:38:08,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:38:08,568 INFO L475 AbstractCegarLoop]: Abstraction has 2279 states and 2824 transitions. [2019-09-10 07:38:08,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-10 07:38:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 2824 transitions. [2019-09-10 07:38:08,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-10 07:38:08,570 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:38:08,570 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:08,570 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:38:08,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:08,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1805752035, now seen corresponding path program 1 times [2019-09-10 07:38:08,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:38:08,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:08,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:08,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:08,572 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:38:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 9 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 07:38:08,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:08,718 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:38:08,718 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 112 with the following transitions: [2019-09-10 07:38:08,719 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [100], [104], [106], [109], [110], [112], [114], [119], [121], [124], [137], [139], [142], [145], [147], [164], [167], [170], [172], [180], [185], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:38:08,721 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:38:08,721 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:38:08,730 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:38:09,014 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:38:09,014 INFO L272 AbstractInterpreter]: Visited 65 different actions 621 times. Merged at 42 different actions 455 times. Widened at 17 different actions 83 times. Performed 2159 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2159 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 89 fixpoints after 22 different actions. Largest state had 90 variables. [2019-09-10 07:38:09,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:09,015 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:38:09,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:09,015 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 07:38:09,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:09,031 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:38:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:09,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-10 07:38:09,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:38:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 67 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 07:38:09,196 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:38:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 07:38:09,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:38:09,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2019-09-10 07:38:09,346 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:38:09,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-10 07:38:09,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-10 07:38:09,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-09-10 07:38:09,347 INFO L87 Difference]: Start difference. First operand 2279 states and 2824 transitions. Second operand 9 states. [2019-09-10 07:38:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:38:09,453 INFO L93 Difference]: Finished difference Result 3762 states and 4428 transitions. [2019-09-10 07:38:09,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 07:38:09,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-10 07:38:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:38:09,456 INFO L225 Difference]: With dead ends: 3762 [2019-09-10 07:38:09,456 INFO L226 Difference]: Without dead ends: 3762 [2019-09-10 07:38:09,457 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-09-10 07:38:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2019-09-10 07:38:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3382. [2019-09-10 07:38:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3382 states. [2019-09-10 07:38:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4024 transitions. [2019-09-10 07:38:09,476 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4024 transitions. Word has length 111 [2019-09-10 07:38:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:38:09,476 INFO L475 AbstractCegarLoop]: Abstraction has 3382 states and 4024 transitions. [2019-09-10 07:38:09,476 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-10 07:38:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4024 transitions. [2019-09-10 07:38:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:38:09,478 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:38:09,478 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 07:38:09,479 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:38:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:09,479 INFO L82 PathProgramCache]: Analyzing trace with hash -975130260, now seen corresponding path program 1 times [2019-09-10 07:38:09,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:38:09,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:09,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:09,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:09,480 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:38:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:09,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:09,842 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:38:09,843 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:38:09,843 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [155], [158], [160], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:38:09,844 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:38:09,844 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:38:09,850 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:38:10,011 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:38:10,012 INFO L272 AbstractInterpreter]: Visited 63 different actions 420 times. Merged at 40 different actions 300 times. Widened at 14 different actions 48 times. Performed 1490 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1490 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 45 fixpoints after 15 different actions. Largest state had 90 variables. [2019-09-10 07:38:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:10,012 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:38:10,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:10,013 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 07:38:10,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:10,035 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:38:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:10,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 29 conjunts are in the unsatisfiable core [2019-09-10 07:38:10,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:38:10,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:10,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:10,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:10,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:10,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:10,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:10,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 34 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:11,502 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:38:11,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:12,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:12,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:12,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:13,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:13,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:38:13,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2019-09-10 07:38:13,447 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:38:13,447 INFO L454 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-09-10 07:38:13,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-09-10 07:38:13,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2019-09-10 07:38:13,448 INFO L87 Difference]: Start difference. First operand 3382 states and 4024 transitions. Second operand 30 states. [2019-09-10 07:38:13,659 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 39 [2019-09-10 07:38:14,253 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:38:14,511 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-09-10 07:38:14,888 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-10 07:38:15,140 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-10 07:38:15,399 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-10 07:38:15,666 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-10 07:38:15,919 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-09-10 07:38:16,285 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 07:38:16,564 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 07:38:16,763 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-09-10 07:38:17,142 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2019-09-10 07:38:17,336 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-10 07:38:17,703 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2019-09-10 07:38:17,903 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:38:18,115 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-10 07:38:18,332 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-10 07:38:18,665 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2019-09-10 07:38:18,871 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:38:19,090 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 07:38:19,305 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 07:38:19,771 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2019-09-10 07:38:19,951 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 07:38:20,150 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-10 07:38:20,355 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 07:38:20,621 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 07:38:20,979 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 07:38:21,263 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2019-09-10 07:38:21,462 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-10 07:38:21,677 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 07:38:21,859 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-10 07:38:22,145 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2019-09-10 07:38:22,337 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-10 07:38:22,536 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-10 07:38:22,722 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-10 07:38:23,099 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 70 [2019-09-10 07:38:23,321 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 07:38:23,697 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2019-09-10 07:38:23,935 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 07:38:24,391 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 85 [2019-09-10 07:38:24,555 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-10 07:38:24,776 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 07:38:25,262 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2019-09-10 07:38:25,486 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 07:38:25,680 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 07:38:26,420 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2019-09-10 07:38:26,760 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 07:38:27,254 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2019-09-10 07:38:27,612 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 07:38:28,136 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 93 [2019-09-10 07:38:28,338 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-10 07:38:28,751 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-10 07:38:28,970 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-09-10 07:38:29,283 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-10 07:38:29,522 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-10 07:38:29,692 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 07:38:29,950 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-10 07:38:30,215 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-10 07:38:30,460 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-10 07:38:30,726 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2019-09-10 07:38:31,647 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-09-10 07:38:31,908 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-10 07:38:32,215 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-10 07:38:32,413 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-10 07:38:32,819 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2019-09-10 07:38:33,055 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-10 07:38:33,448 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2019-09-10 07:38:33,853 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 07:38:34,048 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 07:38:34,367 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2019-09-10 07:38:34,588 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 07:38:34,855 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-09-10 07:38:35,240 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2019-09-10 07:38:35,467 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 07:38:35,748 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 07:38:35,936 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-10 07:38:36,190 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2019-09-10 07:38:36,438 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 07:38:36,682 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-10 07:38:36,975 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2019-09-10 07:38:37,327 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-09-10 07:38:37,591 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-10 07:38:38,003 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2019-09-10 07:38:38,630 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2019-09-10 07:38:38,846 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 07:38:39,110 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 07:38:39,448 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2019-09-10 07:38:39,797 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2019-09-10 07:38:40,094 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-10 07:38:40,352 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-10 07:38:40,671 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2019-09-10 07:38:41,088 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2019-09-10 07:38:41,362 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 07:38:41,651 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2019-09-10 07:38:41,845 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:38:42,086 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-09-10 07:38:42,355 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:38:42,664 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2019-09-10 07:38:42,872 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2019-09-10 07:38:43,183 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2019-09-10 07:38:43,452 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 07:38:43,693 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2019-09-10 07:38:43,928 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2019-09-10 07:38:44,325 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2019-09-10 07:38:44,767 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 64 [2019-09-10 07:38:45,129 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 68 [2019-09-10 07:38:45,640 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 80 [2019-09-10 07:38:46,151 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 81 [2019-09-10 07:38:46,604 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2019-09-10 07:38:46,963 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2019-09-10 07:38:47,399 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 88 [2019-09-10 07:38:47,676 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-10 07:38:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:38:47,714 INFO L93 Difference]: Finished difference Result 7280 states and 8436 transitions. [2019-09-10 07:38:47,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2019-09-10 07:38:47,715 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 112 [2019-09-10 07:38:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:38:47,720 INFO L225 Difference]: With dead ends: 7280 [2019-09-10 07:38:47,720 INFO L226 Difference]: Without dead ends: 7280 [2019-09-10 07:38:47,721 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 177 SyntacticMatches, 19 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8083 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=3642, Invalid=23090, Unknown=0, NotChecked=0, Total=26732 [2019-09-10 07:38:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2019-09-10 07:38:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 3382. [2019-09-10 07:38:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3382 states. [2019-09-10 07:38:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 3999 transitions. [2019-09-10 07:38:47,753 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 3999 transitions. Word has length 112 [2019-09-10 07:38:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:38:47,753 INFO L475 AbstractCegarLoop]: Abstraction has 3382 states and 3999 transitions. [2019-09-10 07:38:47,753 INFO L476 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-09-10 07:38:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 3999 transitions. [2019-09-10 07:38:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:38:47,754 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:38:47,755 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 07:38:47,755 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:38:47,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1353125581, now seen corresponding path program 1 times [2019-09-10 07:38:47,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:38:47,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:47,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:47,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:47,756 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:38:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:48,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:48,130 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:38:48,130 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:38:48,130 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [139], [142], [145], [147], [155], [158], [160], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:38:48,131 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:38:48,131 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:38:48,141 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:38:48,352 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:38:48,352 INFO L272 AbstractInterpreter]: Visited 64 different actions 609 times. Merged at 41 different actions 461 times. Widened at 14 different actions 78 times. Performed 2204 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2204 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 81 fixpoints after 17 different actions. Largest state had 90 variables. [2019-09-10 07:38:48,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:48,353 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:38:48,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:48,353 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 07:38:48,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:48,367 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:38:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:48,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 41 conjunts are in the unsatisfiable core [2019-09-10 07:38:48,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:38:48,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:48,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:48,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:49,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:49,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:49,466 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:38:49,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,834 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-09-10 07:38:50,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:50,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:51,129 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2019-09-10 07:38:52,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:38:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:52,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:38:52,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 22] total 56 [2019-09-10 07:38:52,488 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:38:52,488 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-10 07:38:52,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-10 07:38:52,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2733, Unknown=0, NotChecked=0, Total=3080 [2019-09-10 07:38:52,489 INFO L87 Difference]: Start difference. First operand 3382 states and 3999 transitions. Second operand 36 states. [2019-09-10 07:38:56,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:38:56,599 INFO L93 Difference]: Finished difference Result 6673 states and 7902 transitions. [2019-09-10 07:38:56,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-10 07:38:56,600 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 112 [2019-09-10 07:38:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:38:56,605 INFO L225 Difference]: With dead ends: 6673 [2019-09-10 07:38:56,605 INFO L226 Difference]: Without dead ends: 6673 [2019-09-10 07:38:56,606 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 171 SyntacticMatches, 16 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1125, Invalid=7617, Unknown=0, NotChecked=0, Total=8742 [2019-09-10 07:38:56,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2019-09-10 07:38:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 4643. [2019-09-10 07:38:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4643 states. [2019-09-10 07:38:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 5514 transitions. [2019-09-10 07:38:56,640 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 5514 transitions. Word has length 112 [2019-09-10 07:38:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:38:56,640 INFO L475 AbstractCegarLoop]: Abstraction has 4643 states and 5514 transitions. [2019-09-10 07:38:56,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-10 07:38:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 5514 transitions. [2019-09-10 07:38:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:38:56,641 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:38:56,641 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 07:38:56,642 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:38:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:56,642 INFO L82 PathProgramCache]: Analyzing trace with hash -360306566, now seen corresponding path program 1 times [2019-09-10 07:38:56,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:38:56,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:56,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:56,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:38:56,644 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:38:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:57,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:57,437 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:38:57,437 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:38:57,438 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [77], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [135], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:38:57,439 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:38:57,439 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:38:57,446 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:38:57,636 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:38:57,636 INFO L272 AbstractInterpreter]: Visited 64 different actions 686 times. Merged at 41 different actions 525 times. Widened at 15 different actions 86 times. Performed 2343 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2343 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 94 fixpoints after 17 different actions. Largest state had 90 variables. [2019-09-10 07:38:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:38:57,637 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:38:57,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:38:57,637 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 07:38:57,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:38:57,648 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:38:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:38:57,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-10 07:38:57,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:38:58,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:58,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:59,279 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:38:59,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,561 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2019-09-10 07:39:00,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:00,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:01,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:01,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:01,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:01,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:39:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:39:02,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:39:02,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 23] total 62 [2019-09-10 07:39:02,348 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:39:02,348 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-10 07:39:02,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-10 07:39:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3512, Unknown=0, NotChecked=0, Total=3782 [2019-09-10 07:39:02,349 INFO L87 Difference]: Start difference. First operand 4643 states and 5514 transitions. Second operand 41 states. [2019-09-10 07:39:02,758 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2019-09-10 07:39:04,191 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2019-09-10 07:39:04,406 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2019-09-10 07:39:04,626 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2019-09-10 07:39:05,823 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-10 07:39:06,376 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 07:39:06,948 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-10 07:39:07,340 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-10 07:39:07,833 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 07:39:08,452 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:39:08,738 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-10 07:39:08,985 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2019-09-10 07:39:09,262 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2019-09-10 07:39:09,637 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:39:10,070 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2019-09-10 07:39:10,366 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2019-09-10 07:39:10,763 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 07:39:11,130 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2019-09-10 07:39:11,548 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2019-09-10 07:39:11,856 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 07:39:12,335 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2019-09-10 07:39:12,644 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-10 07:39:13,166 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2019-09-10 07:39:13,607 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2019-09-10 07:39:14,080 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2019-09-10 07:39:14,376 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2019-09-10 07:39:14,700 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2019-09-10 07:39:15,251 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-10 07:39:15,672 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-10 07:39:16,042 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2019-09-10 07:39:16,492 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 07:39:16,880 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:39:17,146 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2019-09-10 07:39:17,870 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2019-09-10 07:39:18,350 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-10 07:39:18,714 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:39:19,019 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-10 07:39:19,435 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-10 07:39:20,263 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 07:39:20,505 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-10 07:39:20,957 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 07:39:21,259 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-10 07:39:21,847 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-10 07:39:22,141 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 07:39:22,729 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 07:39:22,955 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-10 07:39:23,295 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-10 07:39:24,031 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:39:24,262 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 07:39:24,564 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:39:24,944 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 07:39:25,533 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 07:39:26,322 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:39:27,573 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-10 07:39:28,336 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-10 07:39:29,241 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:39:29,692 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:39:30,705 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-10 07:39:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:39:33,173 INFO L93 Difference]: Finished difference Result 9466 states and 11182 transitions. [2019-09-10 07:39:33,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2019-09-10 07:39:33,173 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 112 [2019-09-10 07:39:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:39:33,180 INFO L225 Difference]: With dead ends: 9466 [2019-09-10 07:39:33,180 INFO L226 Difference]: Without dead ends: 9466 [2019-09-10 07:39:33,182 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 175 SyntacticMatches, 9 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11617 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=3867, Invalid=36735, Unknown=0, NotChecked=0, Total=40602 [2019-09-10 07:39:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9466 states. [2019-09-10 07:39:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9466 to 5988. [2019-09-10 07:39:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5988 states. [2019-09-10 07:39:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 7112 transitions. [2019-09-10 07:39:33,229 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 7112 transitions. Word has length 112 [2019-09-10 07:39:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:39:33,229 INFO L475 AbstractCegarLoop]: Abstraction has 5988 states and 7112 transitions. [2019-09-10 07:39:33,229 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-10 07:39:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 7112 transitions. [2019-09-10 07:39:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:39:33,231 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:39:33,231 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 07:39:33,231 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:39:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:39:33,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1966694071, now seen corresponding path program 1 times [2019-09-10 07:39:33,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:39:33,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:39:33,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:39:33,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:39:33,232 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:39:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:39:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:39:33,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:39:33,610 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:39:33,610 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:39:33,610 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [139], [142], [145], [147], [164], [167], [170], [172], [180], [183], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:39:33,612 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:39:33,612 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:39:33,622 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:39:33,835 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:39:33,836 INFO L272 AbstractInterpreter]: Visited 64 different actions 540 times. Merged at 41 different actions 404 times. Widened at 16 different actions 55 times. Performed 1893 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1893 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 64 fixpoints after 16 different actions. Largest state had 90 variables. [2019-09-10 07:39:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:39:33,836 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:39:33,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:39:33,837 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) [2019-09-10 07:39:33,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:39:33,861 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:39:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:39:33,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 36 conjunts are in the unsatisfiable core [2019-09-10 07:39:33,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:39:34,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:39:34,813 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:39:35,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:35,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:35,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:39:35,971 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2019-09-10 07:39:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:39:36,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:39:36,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 52 [2019-09-10 07:39:36,243 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:39:36,244 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-10 07:39:36,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-10 07:39:36,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2450, Unknown=0, NotChecked=0, Total=2652 [2019-09-10 07:39:36,244 INFO L87 Difference]: Start difference. First operand 5988 states and 7112 transitions. Second operand 36 states. [2019-09-10 07:39:40,854 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2019-09-10 07:39:41,415 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-10 07:39:41,783 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-09-10 07:39:42,002 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 07:39:42,498 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 07:39:43,472 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 07:39:44,371 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-09-10 07:39:45,516 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 07:39:46,390 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-09-10 07:39:47,286 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2019-09-10 07:39:47,668 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-09-10 07:39:48,013 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2019-09-10 07:39:48,276 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-09-10 07:39:48,620 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2019-09-10 07:39:48,828 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2019-09-10 07:39:49,243 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2019-09-10 07:39:49,675 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2019-09-10 07:39:49,930 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-10 07:39:50,374 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 07:39:50,576 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 07:39:50,901 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-09-10 07:39:51,209 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-10 07:39:51,450 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-10 07:39:51,814 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2019-09-10 07:39:51,971 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2019-09-10 07:39:52,359 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-09-10 07:39:52,706 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2019-09-10 07:39:53,004 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2019-09-10 07:39:53,170 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-10 07:39:53,578 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2019-09-10 07:39:54,034 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-09-10 07:39:54,324 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-09-10 07:39:54,841 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-09-10 07:39:55,125 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 07:39:55,503 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2019-09-10 07:39:55,896 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-09-10 07:39:56,165 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-10 07:39:56,503 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-10 07:39:57,069 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-09-10 07:39:57,271 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-10 07:39:57,477 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2019-09-10 07:39:57,702 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2019-09-10 07:39:57,939 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2019-09-10 07:39:58,203 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 07:39:58,567 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 07:39:58,829 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 07:39:59,146 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-10 07:39:59,372 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2019-09-10 07:39:59,559 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2019-09-10 07:39:59,744 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-09-10 07:39:59,952 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-09-10 07:40:00,261 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-09-10 07:40:00,627 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-10 07:40:00,810 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-10 07:40:01,050 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 07:40:01,568 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 07:40:01,844 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-10 07:40:02,087 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-10 07:40:02,612 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-10 07:40:05,320 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2019-09-10 07:40:05,709 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2019-09-10 07:40:06,373 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-10 07:40:07,249 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 07:40:07,862 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-10 07:40:08,055 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-10 07:40:08,918 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 07:40:09,264 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-10 07:40:10,046 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:40:11,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:40:11,150 INFO L93 Difference]: Finished difference Result 17634 states and 20588 transitions. [2019-09-10 07:40:11,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2019-09-10 07:40:11,150 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 112 [2019-09-10 07:40:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:40:11,164 INFO L225 Difference]: With dead ends: 17634 [2019-09-10 07:40:11,164 INFO L226 Difference]: Without dead ends: 17634 [2019-09-10 07:40:11,168 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25167 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=8737, Invalid=62819, Unknown=0, NotChecked=0, Total=71556 [2019-09-10 07:40:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17634 states. [2019-09-10 07:40:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17634 to 7674. [2019-09-10 07:40:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7674 states. [2019-09-10 07:40:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 9082 transitions. [2019-09-10 07:40:11,259 INFO L78 Accepts]: Start accepts. Automaton has 7674 states and 9082 transitions. Word has length 112 [2019-09-10 07:40:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:40:11,259 INFO L475 AbstractCegarLoop]: Abstraction has 7674 states and 9082 transitions. [2019-09-10 07:40:11,259 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-10 07:40:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 7674 states and 9082 transitions. [2019-09-10 07:40:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:40:11,260 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:40:11,260 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 07:40:11,261 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:40:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:40:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash -98883104, now seen corresponding path program 1 times [2019-09-10 07:40:11,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:40:11,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:40:11,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:40:11,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:40:11,262 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:40:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:40:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:40:11,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:40:11,789 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:40:11,790 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:40:11,790 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [137], [139], [142], [145], [147], [164], [167], [170], [172], [180], [183], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:40:11,791 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:40:11,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:40:11,800 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:40:11,999 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:40:11,999 INFO L272 AbstractInterpreter]: Visited 63 different actions 558 times. Merged at 40 different actions 415 times. Widened at 13 different actions 61 times. Performed 2073 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2073 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 71 fixpoints after 16 different actions. Largest state had 90 variables. [2019-09-10 07:40:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:40:12,000 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:40:12,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:40:12,000 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) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:40:12,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:40:12,012 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:40:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:40:12,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-10 07:40:12,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:40:12,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:40:12,729 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:40:12,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:12,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:14,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:40:14,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:40:14,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 31 [2019-09-10 07:40:14,536 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:40:14,536 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-10 07:40:14,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-10 07:40:14,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2019-09-10 07:40:14,537 INFO L87 Difference]: Start difference. First operand 7674 states and 9082 transitions. Second operand 25 states. [2019-09-10 07:40:14,740 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 07:40:15,392 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:40:15,711 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-10 07:40:16,241 WARN L188 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-09-10 07:40:16,762 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-09-10 07:40:17,556 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2019-09-10 07:40:18,078 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2019-09-10 07:40:18,970 WARN L188 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2019-09-10 07:40:19,256 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-09-10 07:40:19,765 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2019-09-10 07:40:20,316 WARN L188 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2019-09-10 07:40:20,772 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2019-09-10 07:40:21,099 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2019-09-10 07:40:21,409 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2019-09-10 07:40:21,732 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2019-09-10 07:40:22,030 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-10 07:40:22,322 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-10 07:40:22,932 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2019-09-10 07:40:23,505 WARN L188 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2019-09-10 07:40:23,871 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2019-09-10 07:40:24,353 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2019-09-10 07:40:24,587 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-10 07:40:24,953 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2019-09-10 07:40:25,403 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2019-09-10 07:40:25,853 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-10 07:40:26,234 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2019-09-10 07:40:26,679 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2019-09-10 07:40:27,565 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2019-09-10 07:40:28,027 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-10 07:40:28,406 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2019-09-10 07:40:28,871 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 07:40:29,207 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:40:29,875 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:40:30,331 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2019-09-10 07:40:30,616 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 07:40:31,106 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2019-09-10 07:40:31,444 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-10 07:40:32,186 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2019-09-10 07:40:32,569 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2019-09-10 07:40:32,910 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:40:33,157 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:40:33,444 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-10 07:40:33,807 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2019-09-10 07:40:34,303 WARN L188 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-10 07:40:34,738 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:40:35,134 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-10 07:40:35,440 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2019-09-10 07:40:37,988 WARN L188 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2019-09-10 07:40:38,560 WARN L188 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 07:40:39,010 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-10 07:40:39,417 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2019-09-10 07:40:39,981 WARN L188 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2019-09-10 07:40:41,475 WARN L188 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 112 DAG size of output: 105 [2019-09-10 07:40:41,922 WARN L188 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:40:42,608 WARN L188 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-10 07:40:43,108 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2019-09-10 07:40:43,771 WARN L188 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 07:40:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:40:43,782 INFO L93 Difference]: Finished difference Result 11698 states and 13642 transitions. [2019-09-10 07:40:43,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-09-10 07:40:43,783 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 112 [2019-09-10 07:40:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:40:43,792 INFO L225 Difference]: With dead ends: 11698 [2019-09-10 07:40:43,792 INFO L226 Difference]: Without dead ends: 11698 [2019-09-10 07:40:43,793 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 194 SyntacticMatches, 17 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2465 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=1953, Invalid=6419, Unknown=0, NotChecked=0, Total=8372 [2019-09-10 07:40:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11698 states. [2019-09-10 07:40:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11698 to 7485. [2019-09-10 07:40:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7485 states. [2019-09-10 07:40:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 8737 transitions. [2019-09-10 07:40:43,857 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 8737 transitions. Word has length 112 [2019-09-10 07:40:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:40:43,857 INFO L475 AbstractCegarLoop]: Abstraction has 7485 states and 8737 transitions. [2019-09-10 07:40:43,857 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-10 07:40:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 8737 transitions. [2019-09-10 07:40:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-10 07:40:43,858 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:40:43,858 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:40:43,858 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:40:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:40:43,859 INFO L82 PathProgramCache]: Analyzing trace with hash 260288894, now seen corresponding path program 1 times [2019-09-10 07:40:43,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:40:43,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:40:43,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:40:43,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:40:43,860 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:40:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:40:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:40:44,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:40:44,379 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:40:44,379 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2019-09-10 07:40:44,379 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [155], [158], [160], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:40:44,382 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:40:44,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:40:44,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:40:44,554 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:40:44,554 INFO L272 AbstractInterpreter]: Visited 62 different actions 506 times. Merged at 39 different actions 380 times. Widened at 14 different actions 50 times. Performed 1818 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1818 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 58 fixpoints after 19 different actions. Largest state had 90 variables. [2019-09-10 07:40:44,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:40:44,554 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:40:44,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:40:44,555 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:40:44,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:40:44,573 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:40:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:40:44,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 35 conjunts are in the unsatisfiable core [2019-09-10 07:40:44,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:40:44,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:45,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:40:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:40:45,663 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:40:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:40:47,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:40:47,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 52 [2019-09-10 07:40:47,003 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:40:47,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-09-10 07:40:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-09-10 07:40:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2456, Unknown=0, NotChecked=0, Total=2652 [2019-09-10 07:40:47,004 INFO L87 Difference]: Start difference. First operand 7485 states and 8737 transitions. Second operand 37 states. [2019-09-10 07:40:49,728 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:40:50,245 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 07:40:50,562 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:40:50,986 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:40:51,547 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-10 07:40:51,780 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:40:53,253 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:40:55,271 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:40:55,487 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 07:40:55,724 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:40:56,206 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:40:56,478 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 07:40:56,777 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:40:57,021 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-10 07:40:57,239 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:40:59,705 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 07:41:00,160 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:41:00,339 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2019-09-10 07:41:00,846 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:41:01,248 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:41:01,748 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:41:02,370 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 07:41:02,624 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-10 07:41:03,140 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-10 07:41:03,619 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-10 07:41:03,889 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-10 07:41:04,352 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:41:04,821 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-10 07:41:05,161 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:41:05,686 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:41:06,183 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 07:41:07,077 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-10 07:41:07,529 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-10 07:41:08,920 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:41:09,932 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-10 07:41:10,344 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-10 07:41:10,772 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:41:11,082 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:41:11,479 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 07:41:12,397 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:41:12,761 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-10 07:41:13,831 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-10 07:41:15,580 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:41:16,060 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-09-10 07:41:16,899 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2019-09-10 07:41:17,385 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:41:17,614 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 07:41:18,465 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 07:41:18,683 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-10 07:41:18,863 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 07:41:19,349 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-10 07:41:19,703 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:41:20,930 WARN L188 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 07:41:21,173 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-10 07:41:22,379 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-10 07:41:22,942 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-10 07:41:23,148 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-10 07:41:23,428 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-10 07:41:24,494 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-10 07:41:24,801 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 07:41:25,201 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:41:25,601 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 07:41:25,855 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-09-10 07:41:26,092 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-10 07:41:26,397 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-10 07:41:26,772 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-10 07:41:27,006 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:41:27,217 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 07:41:27,638 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:41:28,283 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:41:28,940 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:41:32,352 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:41:33,114 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 07:41:33,984 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-10 07:41:35,225 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:41:35,478 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-09-10 07:41:36,253 WARN L188 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-10 07:41:39,657 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-09-10 07:41:41,480 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:41:42,692 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 07:41:43,371 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-10 07:41:43,615 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-10 07:41:44,166 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:41:44,528 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:41:44,765 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2019-09-10 07:41:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:41:45,179 INFO L93 Difference]: Finished difference Result 13681 states and 15896 transitions. [2019-09-10 07:41:45,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2019-09-10 07:41:45,181 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 113 [2019-09-10 07:41:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:41:45,192 INFO L225 Difference]: With dead ends: 13681 [2019-09-10 07:41:45,192 INFO L226 Difference]: Without dead ends: 13681 [2019-09-10 07:41:45,195 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15350 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=5925, Invalid=42255, Unknown=0, NotChecked=0, Total=48180 [2019-09-10 07:41:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13681 states. [2019-09-10 07:41:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13681 to 8168. [2019-09-10 07:41:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8168 states. [2019-09-10 07:41:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 9499 transitions. [2019-09-10 07:41:45,262 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 9499 transitions. Word has length 113 [2019-09-10 07:41:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:41:45,263 INFO L475 AbstractCegarLoop]: Abstraction has 8168 states and 9499 transitions. [2019-09-10 07:41:45,263 INFO L476 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-09-10 07:41:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 9499 transitions. [2019-09-10 07:41:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-10 07:41:45,264 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:41:45,264 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:41:45,264 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:41:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:41:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash -759015270, now seen corresponding path program 1 times [2019-09-10 07:41:45,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:41:45,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:41:45,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:41:45,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:41:45,266 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:41:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:41:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 37 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:41:45,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:41:45,710 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:41:45,711 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2019-09-10 07:41:45,711 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [164], [167], [170], [172], [180], [183], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:41:45,713 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:41:45,713 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:41:45,720 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:41:45,912 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:41:45,912 INFO L272 AbstractInterpreter]: Visited 62 different actions 545 times. Merged at 39 different actions 422 times. Widened at 11 different actions 59 times. Performed 1928 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1928 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 60 fixpoints after 15 different actions. Largest state had 90 variables. [2019-09-10 07:41:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:41:45,913 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:41:45,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:41:45,913 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:41:45,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:41:45,988 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:41:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:41:46,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-10 07:41:46,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:41:46,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:46,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:47,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 37 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:41:47,375 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:41:48,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 37 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:41:48,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:41:48,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 55 [2019-09-10 07:41:48,891 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:41:48,891 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-10 07:41:48,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-10 07:41:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2744, Unknown=0, NotChecked=0, Total=2970 [2019-09-10 07:41:48,892 INFO L87 Difference]: Start difference. First operand 8168 states and 9499 transitions. Second operand 38 states. [2019-09-10 07:41:49,055 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2019-09-10 07:41:50,776 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-09-10 07:41:51,037 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2019-09-10 07:41:51,859 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:41:53,770 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2019-09-10 07:41:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:41:54,819 INFO L93 Difference]: Finished difference Result 10234 states and 11860 transitions. [2019-09-10 07:41:54,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-10 07:41:54,819 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 113 [2019-09-10 07:41:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:41:54,828 INFO L225 Difference]: With dead ends: 10234 [2019-09-10 07:41:54,828 INFO L226 Difference]: Without dead ends: 10234 [2019-09-10 07:41:54,829 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=852, Invalid=6804, Unknown=0, NotChecked=0, Total=7656 [2019-09-10 07:41:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10234 states. [2019-09-10 07:41:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10234 to 9246. [2019-09-10 07:41:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2019-09-10 07:41:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 10761 transitions. [2019-09-10 07:41:54,892 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 10761 transitions. Word has length 113 [2019-09-10 07:41:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:41:54,892 INFO L475 AbstractCegarLoop]: Abstraction has 9246 states and 10761 transitions. [2019-09-10 07:41:54,893 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-10 07:41:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 10761 transitions. [2019-09-10 07:41:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-10 07:41:54,894 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:41:54,894 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:41:54,894 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:41:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:41:54,894 INFO L82 PathProgramCache]: Analyzing trace with hash -783264326, now seen corresponding path program 1 times [2019-09-10 07:41:54,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:41:54,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:41:54,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:41:54,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:41:54,896 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:41:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:41:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:41:55,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:41:55,175 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:41:55,175 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2019-09-10 07:41:55,175 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [155], [160], [164], [167], [170], [172], [180], [183], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:41:55,176 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:41:55,177 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:41:55,187 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:41:55,324 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:41:55,325 INFO L272 AbstractInterpreter]: Visited 64 different actions 475 times. Merged at 41 different actions 354 times. Widened at 12 different actions 40 times. Performed 1658 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1658 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 57 fixpoints after 19 different actions. Largest state had 90 variables. [2019-09-10 07:41:55,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:41:55,325 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:41:55,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:41:55,325 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:41:55,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:41:55,337 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:41:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:41:55,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-10 07:41:55,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:41:55,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:56,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:56,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:56,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:56,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:56,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:56,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:41:56,909 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:41:56,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:57,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:57,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:57,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:57,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:41:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 47 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:41:57,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:41:57,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 24 [2019-09-10 07:41:57,254 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:41:57,255 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-10 07:41:57,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-10 07:41:57,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2019-09-10 07:41:57,255 INFO L87 Difference]: Start difference. First operand 9246 states and 10761 transitions. Second operand 18 states. [2019-09-10 07:41:59,414 WARN L188 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-10 07:42:09,260 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2019-09-10 07:42:09,745 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2019-09-10 07:42:10,777 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2019-09-10 07:42:11,225 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2019-09-10 07:42:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:42:15,280 INFO L93 Difference]: Finished difference Result 17018 states and 19988 transitions. [2019-09-10 07:42:15,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-10 07:42:15,280 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 114 [2019-09-10 07:42:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:42:15,296 INFO L225 Difference]: With dead ends: 17018 [2019-09-10 07:42:15,296 INFO L226 Difference]: Without dead ends: 17018 [2019-09-10 07:42:15,297 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 201 SyntacticMatches, 16 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=366, Invalid=1525, Unknown=1, NotChecked=0, Total=1892 [2019-09-10 07:42:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17018 states. [2019-09-10 07:42:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17018 to 11617. [2019-09-10 07:42:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11617 states. [2019-09-10 07:42:15,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11617 states to 11617 states and 13526 transitions. [2019-09-10 07:42:15,399 INFO L78 Accepts]: Start accepts. Automaton has 11617 states and 13526 transitions. Word has length 114 [2019-09-10 07:42:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:42:15,399 INFO L475 AbstractCegarLoop]: Abstraction has 11617 states and 13526 transitions. [2019-09-10 07:42:15,399 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-10 07:42:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 11617 states and 13526 transitions. [2019-09-10 07:42:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-10 07:42:15,401 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:42:15,401 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:42:15,401 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:42:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:42:15,401 INFO L82 PathProgramCache]: Analyzing trace with hash -521371028, now seen corresponding path program 1 times [2019-09-10 07:42:15,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:42:15,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:42:15,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:42:15,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:42:15,403 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:42:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:42:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:42:16,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:42:16,978 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:42:16,979 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 116 with the following transitions: [2019-09-10 07:42:16,979 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [155], [160], [164], [167], [170], [172], [180], [183], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:42:16,980 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:42:16,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:42:16,988 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:42:17,191 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:42:17,191 INFO L272 AbstractInterpreter]: Visited 63 different actions 459 times. Merged at 40 different actions 346 times. Widened at 14 different actions 43 times. Performed 1615 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1615 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 50 fixpoints after 18 different actions. Largest state had 90 variables. [2019-09-10 07:42:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:42:17,192 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:42:17,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:42:17,192 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:42:17,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:42:17,203 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:42:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:42:17,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-10 07:42:17,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:42:18,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:42:18,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:42:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 51 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:42:18,881 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:42:19,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:42:20,334 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2019-09-10 07:42:20,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:42:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:42:21,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:42:21,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 21] total 67 [2019-09-10 07:42:21,104 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:42:21,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-09-10 07:42:21,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-09-10 07:42:21,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4166, Unknown=0, NotChecked=0, Total=4422 [2019-09-10 07:42:21,105 INFO L87 Difference]: Start difference. First operand 11617 states and 13526 transitions. Second operand 48 states. [2019-09-10 07:42:21,460 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 07:42:24,329 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2019-09-10 07:42:24,745 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2019-09-10 07:42:25,102 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2019-09-10 07:42:25,414 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-10 07:42:25,718 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-10 07:42:26,302 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-10 07:42:26,671 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 07:42:26,922 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-09-10 07:42:27,260 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2019-09-10 07:42:27,561 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 07:42:28,134 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-10 07:42:28,475 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 07:42:28,968 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-10 07:42:29,250 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-09-10 07:42:29,601 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-10 07:42:29,978 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2019-09-10 07:42:30,481 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2019-09-10 07:42:30,881 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2019-09-10 07:42:31,133 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-10 07:42:31,845 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-09-10 07:42:32,308 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2019-09-10 07:42:32,629 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 07:42:33,020 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2019-09-10 07:42:33,615 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2019-09-10 07:42:34,025 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2019-09-10 07:42:34,557 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2019-09-10 07:42:34,867 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2019-09-10 07:42:35,370 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2019-09-10 07:42:35,999 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2019-09-10 07:42:36,594 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2019-09-10 07:42:37,095 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2019-09-10 07:42:37,768 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2019-09-10 07:42:38,406 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-09-10 07:42:39,019 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2019-09-10 07:42:39,634 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-09-10 07:42:40,138 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2019-09-10 07:42:41,166 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-10 07:42:41,647 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 07:42:42,209 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2019-09-10 07:42:42,711 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-10 07:42:43,521 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2019-09-10 07:42:44,462 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2019-09-10 07:42:44,748 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2019-09-10 07:42:45,032 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2019-09-10 07:42:45,977 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-10 07:42:46,435 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2019-09-10 07:42:46,960 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-09-10 07:42:47,447 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2019-09-10 07:42:47,951 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2019-09-10 07:42:48,220 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2019-09-10 07:42:48,768 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2019-09-10 07:42:49,292 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-09-10 07:42:49,626 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2019-09-10 07:42:50,075 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-10 07:42:50,561 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-09-10 07:42:51,211 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2019-09-10 07:42:52,563 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-09-10 07:42:52,963 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-09-10 07:42:53,207 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2019-09-10 07:42:53,714 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2019-09-10 07:42:54,258 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2019-09-10 07:42:54,709 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-10 07:42:54,982 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-09-10 07:42:55,500 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2019-09-10 07:42:56,327 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 07:42:56,698 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-09-10 07:42:57,142 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-09-10 07:42:57,851 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-09-10 07:42:58,182 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-10 07:42:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:42:58,868 INFO L93 Difference]: Finished difference Result 16664 states and 19318 transitions. [2019-09-10 07:42:58,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2019-09-10 07:42:58,869 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 115 [2019-09-10 07:42:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:42:58,882 INFO L225 Difference]: With dead ends: 16664 [2019-09-10 07:42:58,882 INFO L226 Difference]: Without dead ends: 16664 [2019-09-10 07:42:58,884 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9098 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=3923, Invalid=30487, Unknown=0, NotChecked=0, Total=34410 [2019-09-10 07:42:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16664 states. [2019-09-10 07:42:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16664 to 14352. [2019-09-10 07:42:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14352 states. [2019-09-10 07:42:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14352 states to 14352 states and 16721 transitions. [2019-09-10 07:42:58,998 INFO L78 Accepts]: Start accepts. Automaton has 14352 states and 16721 transitions. Word has length 115 [2019-09-10 07:42:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:42:58,998 INFO L475 AbstractCegarLoop]: Abstraction has 14352 states and 16721 transitions. [2019-09-10 07:42:58,998 INFO L476 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-09-10 07:42:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 14352 states and 16721 transitions. [2019-09-10 07:42:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-10 07:42:59,003 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:42:59,003 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:42:59,003 INFO L418 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:42:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:42:59,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1385425472, now seen corresponding path program 1 times [2019-09-10 07:42:59,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:42:59,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:42:59,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:42:59,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:42:59,004 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:42:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:42:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 22 proven. 202 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 07:42:59,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:42:59,279 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:42:59,279 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2019-09-10 07:42:59,280 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [155], [158], [160], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:42:59,281 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:42:59,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:42:59,295 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:42:59,562 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:42:59,563 INFO L272 AbstractInterpreter]: Visited 63 different actions 581 times. Merged at 40 different actions 438 times. Widened at 14 different actions 62 times. Performed 2044 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2044 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 77 fixpoints after 16 different actions. Largest state had 90 variables. [2019-09-10 07:42:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:42:59,563 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:42:59,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:42:59,563 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:42:59,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:42:59,584 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:42:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:42:59,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 41 conjunts are in the unsatisfiable core [2019-09-10 07:42:59,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:43:00,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:00,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:00,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:00,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:00,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:00,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 147 proven. 65 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-10 07:43:01,131 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:43:01,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:02,220 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2019-09-10 07:43:03,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 07:43:03,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:03,951 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2019-09-10 07:43:04,251 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-09-10 07:43:04,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-10 07:43:04,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:05,190 WARN L188 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2019-09-10 07:43:05,731 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 81 [2019-09-10 07:43:06,085 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-09-10 07:43:06,487 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-09-10 07:43:06,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-10 07:43:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 150 proven. 69 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 07:43:13,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:43:13,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24, 25] total 52 [2019-09-10 07:43:13,777 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:43:13,777 INFO L454 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-09-10 07:43:13,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-09-10 07:43:13,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2397, Unknown=3, NotChecked=0, Total=2652 [2019-09-10 07:43:13,778 INFO L87 Difference]: Start difference. First operand 14352 states and 16721 transitions. Second operand 29 states. [2019-09-10 07:43:15,474 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2019-09-10 07:43:16,963 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2019-09-10 07:43:17,393 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-09-10 07:43:17,753 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-10 07:43:18,121 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-09-10 07:43:19,996 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-09-10 07:43:22,208 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2019-09-10 07:43:22,741 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-10 07:43:23,103 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2019-09-10 07:43:23,472 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-09-10 07:43:27,701 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2019-09-10 07:43:28,221 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-09-10 07:43:28,569 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-10 07:43:28,947 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-09-10 07:43:31,653 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2019-09-10 07:43:31,883 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2019-09-10 07:43:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:43:32,595 INFO L93 Difference]: Finished difference Result 17150 states and 19292 transitions. [2019-09-10 07:43:32,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2019-09-10 07:43:32,596 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 157 [2019-09-10 07:43:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:43:32,609 INFO L225 Difference]: With dead ends: 17150 [2019-09-10 07:43:32,609 INFO L226 Difference]: Without dead ends: 17150 [2019-09-10 07:43:32,610 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 262 SyntacticMatches, 9 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5658 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=2650, Invalid=19399, Unknown=3, NotChecked=0, Total=22052 [2019-09-10 07:43:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17150 states. [2019-09-10 07:43:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17150 to 16197. [2019-09-10 07:43:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16197 states. [2019-09-10 07:43:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16197 states to 16197 states and 18232 transitions. [2019-09-10 07:43:32,729 INFO L78 Accepts]: Start accepts. Automaton has 16197 states and 18232 transitions. Word has length 157 [2019-09-10 07:43:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:43:32,730 INFO L475 AbstractCegarLoop]: Abstraction has 16197 states and 18232 transitions. [2019-09-10 07:43:32,730 INFO L476 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-09-10 07:43:32,730 INFO L276 IsEmpty]: Start isEmpty. Operand 16197 states and 18232 transitions. [2019-09-10 07:43:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-10 07:43:32,733 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:43:32,733 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:43:32,733 INFO L418 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:43:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:43:32,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1792049049, now seen corresponding path program 1 times [2019-09-10 07:43:32,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:43:32,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:43:32,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:43:32,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:43:32,734 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:43:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:43:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 32 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:43:33,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:43:33,513 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:43:33,513 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2019-09-10 07:43:33,513 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [100], [104], [106], [109], [110], [112], [114], [119], [121], [124], [130], [135], [139], [142], [145], [147], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:43:33,515 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:43:33,515 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:43:33,524 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:43:33,765 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:43:33,765 INFO L272 AbstractInterpreter]: Visited 64 different actions 577 times. Merged at 41 different actions 428 times. Widened at 15 different actions 75 times. Performed 1987 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1987 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 73 fixpoints after 20 different actions. Largest state had 90 variables. [2019-09-10 07:43:33,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:43:33,766 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:43:33,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:43:33,766 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:43:33,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:43:33,791 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:43:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:43:33,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 33 conjunts are in the unsatisfiable core [2019-09-10 07:43:33,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:43:34,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:34,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:34,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:34,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:34,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:35,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 144 proven. 74 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 07:43:35,509 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:43:35,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:36,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:36,569 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2019-09-10 07:43:36,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:36,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:36,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:43:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 144 proven. 74 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 07:43:37,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:43:37,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 54 [2019-09-10 07:43:37,419 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:43:37,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-10 07:43:37,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-10 07:43:37,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2637, Unknown=0, NotChecked=0, Total=2862 [2019-09-10 07:43:37,420 INFO L87 Difference]: Start difference. First operand 16197 states and 18232 transitions. Second operand 38 states. [2019-09-10 07:43:37,637 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-10 07:43:38,685 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-10 07:43:38,994 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-10 07:43:39,320 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-10 07:43:39,643 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-10 07:43:39,967 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-09-10 07:43:40,619 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-10 07:43:41,193 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 07:43:41,395 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 07:43:45,487 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-09-10 07:43:45,862 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-09-10 07:43:46,130 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-09-10 07:43:46,556 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-09-10 07:43:47,340 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2019-09-10 07:43:48,170 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2019-09-10 07:43:48,928 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2019-09-10 07:43:50,194 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2019-09-10 07:43:51,006 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2019-09-10 07:43:51,721 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2019-09-10 07:43:52,676 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:43:57,524 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-10 07:43:58,457 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-09-10 07:43:58,799 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-09-10 07:43:59,987 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 07:44:00,346 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 07:44:00,795 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 07:44:01,943 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 07:44:04,256 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 07:44:05,250 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-09-10 07:44:09,973 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-09-10 07:44:12,905 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-10 07:44:13,467 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-09-10 07:44:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:44:14,897 INFO L93 Difference]: Finished difference Result 21554 states and 24086 transitions. [2019-09-10 07:44:14,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2019-09-10 07:44:14,898 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 157 [2019-09-10 07:44:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:44:14,913 INFO L225 Difference]: With dead ends: 21554 [2019-09-10 07:44:14,914 INFO L226 Difference]: Without dead ends: 21554 [2019-09-10 07:44:14,915 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16068 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=4828, Invalid=43792, Unknown=0, NotChecked=0, Total=48620 [2019-09-10 07:44:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21554 states. [2019-09-10 07:44:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21554 to 18059. [2019-09-10 07:44:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18059 states. [2019-09-10 07:44:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18059 states to 18059 states and 20309 transitions. [2019-09-10 07:44:15,046 INFO L78 Accepts]: Start accepts. Automaton has 18059 states and 20309 transitions. Word has length 157 [2019-09-10 07:44:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:44:15,047 INFO L475 AbstractCegarLoop]: Abstraction has 18059 states and 20309 transitions. [2019-09-10 07:44:15,047 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-10 07:44:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 18059 states and 20309 transitions. [2019-09-10 07:44:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-10 07:44:15,049 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:44:15,049 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:44:15,049 INFO L418 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:44:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:44:15,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1571315022, now seen corresponding path program 1 times [2019-09-10 07:44:15,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:44:15,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:44:15,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:44:15,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:44:15,051 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:44:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:44:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 48 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:44:16,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:44:16,270 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:44:16,270 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 159 with the following transitions: [2019-09-10 07:44:16,270 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [100], [104], [106], [109], [110], [112], [114], [119], [121], [124], [139], [142], [145], [147], [155], [160], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:44:16,273 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:44:16,273 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:44:16,281 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:44:16,430 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:44:16,431 INFO L272 AbstractInterpreter]: Visited 64 different actions 593 times. Merged at 41 different actions 444 times. Widened at 17 different actions 81 times. Performed 2003 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2003 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 73 fixpoints after 19 different actions. Largest state had 90 variables. [2019-09-10 07:44:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:44:16,431 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:44:16,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:44:16,431 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:44:16,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:44:16,443 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:44:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:44:16,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 43 conjunts are in the unsatisfiable core [2019-09-10 07:44:16,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:44:17,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:17,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:17,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:17,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:17,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:17,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:18,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 48 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:44:19,752 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:44:19,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:20,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:20,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:20,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:22,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:22,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:23,310 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-10 07:44:23,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:44:23,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 07:44:23,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 07:44:24,242 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-10 07:44:25,363 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-09-10 07:44:25,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-10 07:44:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 48 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:44:26,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:44:26,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 24] total 73 [2019-09-10 07:44:26,289 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:44:26,290 INFO L454 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-09-10 07:44:26,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-09-10 07:44:26,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4906, Unknown=0, NotChecked=0, Total=5256 [2019-09-10 07:44:26,290 INFO L87 Difference]: Start difference. First operand 18059 states and 20309 transitions. Second operand 54 states. [2019-09-10 07:44:26,947 WARN L188 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 101 [2019-09-10 07:44:27,851 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2019-09-10 07:44:29,830 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 07:44:30,207 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-09-10 07:44:30,561 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2019-09-10 07:44:30,879 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:44:31,186 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:44:31,538 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-10 07:44:31,931 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-10 07:44:32,230 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-10 07:44:32,488 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50