java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 06:37:16,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 06:37:16,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 06:37:16,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 06:37:16,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 06:37:16,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 06:37:16,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 06:37:16,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 06:37:16,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 06:37:16,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 06:37:16,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 06:37:16,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-10 06:37:16,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 06:37:16,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 06:37:16,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 06:37:16,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 06:37:16,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 06:37:16,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 06:37:16,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 06:37:16,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 06:37:16,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 06:37:16,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 06:37:16,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 06:37:16,728 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 06:37:16,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 06:37:16,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 06:37:16,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 06:37:16,759 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 06:37:16,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 06:37:16,760 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 06:37:16,760 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 06:37:16,761 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 06:37:16,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 06:37:16,761 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 06:37:16,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 06:37:16,763 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 06:37:16,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 06:37:16,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 06:37:16,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 06:37:16,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 06:37:16,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 06:37:16,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 06:37:16,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 06:37:16,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 06:37:16,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 06:37:16,766 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 06:37:16,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 06:37:16,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 06:37:16,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 06:37:16,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 06:37:16,768 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 06:37:16,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 06:37:16,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 06:37:16,768 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 06:37:16,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 06:37:16,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 06:37:16,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 06:37:16,818 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 06:37:16,818 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 06:37:16,819 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:37:16,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d0ce317/a91f5503fd214befa506a4ca2ee2480f/FLAG1b1ce4e62 [2019-09-10 06:37:17,397 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 06:37:17,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:37:17,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d0ce317/a91f5503fd214befa506a4ca2ee2480f/FLAG1b1ce4e62 [2019-09-10 06:37:17,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d0ce317/a91f5503fd214befa506a4ca2ee2480f [2019-09-10 06:37:17,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 06:37:17,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 06:37:17,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 06:37:17,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 06:37:17,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 06:37:17,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 06:37:17" (1/1) ... [2019-09-10 06:37:17,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b60ac12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:17, skipping insertion in model container [2019-09-10 06:37:17,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 06:37:17" (1/1) ... [2019-09-10 06:37:17,807 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 06:37:17,845 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 06:37:18,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 06:37:18,080 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 06:37:18,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 06:37:18,276 INFO L192 MainTranslator]: Completed translation [2019-09-10 06:37:18,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18 WrapperNode [2019-09-10 06:37:18,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 06:37:18,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 06:37:18,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 06:37:18,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 06:37:18,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (1/1) ... [2019-09-10 06:37:18,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (1/1) ... [2019-09-10 06:37:18,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (1/1) ... [2019-09-10 06:37:18,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (1/1) ... [2019-09-10 06:37:18,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (1/1) ... [2019-09-10 06:37:18,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (1/1) ... [2019-09-10 06:37:18,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (1/1) ... [2019-09-10 06:37:18,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 06:37:18,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 06:37:18,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 06:37:18,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 06:37:18,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (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 06:37:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 06:37:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 06:37:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 06:37:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 06:37:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 06:37:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 06:37:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 06:37:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 06:37:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 06:37:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 06:37:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 06:37:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 06:37:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 06:37:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 06:37:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 06:37:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 06:37:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 06:37:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 06:37:19,059 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 06:37:19,059 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 06:37:19,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 06:37:19 BoogieIcfgContainer [2019-09-10 06:37:19,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 06:37:19,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 06:37:19,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 06:37:19,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 06:37:19,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 06:37:17" (1/3) ... [2019-09-10 06:37:19,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62dedc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 06:37:19, skipping insertion in model container [2019-09-10 06:37:19,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 06:37:18" (2/3) ... [2019-09-10 06:37:19,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62dedc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 06:37:19, skipping insertion in model container [2019-09-10 06:37:19,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 06:37:19" (3/3) ... [2019-09-10 06:37:19,070 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 06:37:19,080 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 06:37:19,089 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 06:37:19,107 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 06:37:19,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 06:37:19,137 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 06:37:19,137 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 06:37:19,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 06:37:19,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 06:37:19,138 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 06:37:19,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 06:37:19,139 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 06:37:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-09-10 06:37:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-10 06:37:19,172 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:19,174 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 06:37:19,176 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash 346351739, now seen corresponding path program 1 times [2019-09-10 06:37:19,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:19,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:19,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:19,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:19,242 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:19,579 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 06:37:19,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:19,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:37:19,582 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:19,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:37:19,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:37:19,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:19,612 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2019-09-10 06:37:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:19,727 INFO L93 Difference]: Finished difference Result 130 states and 203 transitions. [2019-09-10 06:37:19,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:37:19,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-10 06:37:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:19,752 INFO L225 Difference]: With dead ends: 130 [2019-09-10 06:37:19,752 INFO L226 Difference]: Without dead ends: 122 [2019-09-10 06:37:19,757 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 06:37:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-09-10 06:37:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2019-09-10 06:37:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-10 06:37:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2019-09-10 06:37:19,841 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 41 [2019-09-10 06:37:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:19,842 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2019-09-10 06:37:19,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:37:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2019-09-10 06:37:19,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-10 06:37:19,848 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:19,849 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 06:37:19,849 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:19,851 INFO L82 PathProgramCache]: Analyzing trace with hash -686518527, now seen corresponding path program 1 times [2019-09-10 06:37:19,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:19,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:19,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:19,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:19,855 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:20,025 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 06:37:20,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:20,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:37:20,026 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:20,028 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:37:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:37:20,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:20,029 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand 3 states. [2019-09-10 06:37:20,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:20,063 INFO L93 Difference]: Finished difference Result 184 states and 274 transitions. [2019-09-10 06:37:20,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:37:20,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-10 06:37:20,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:20,067 INFO L225 Difference]: With dead ends: 184 [2019-09-10 06:37:20,067 INFO L226 Difference]: Without dead ends: 184 [2019-09-10 06:37:20,068 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 06:37:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-09-10 06:37:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2019-09-10 06:37:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-09-10 06:37:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 273 transitions. [2019-09-10 06:37:20,085 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 273 transitions. Word has length 42 [2019-09-10 06:37:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:20,086 INFO L475 AbstractCegarLoop]: Abstraction has 182 states and 273 transitions. [2019-09-10 06:37:20,086 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:37:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 273 transitions. [2019-09-10 06:37:20,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 06:37:20,088 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:20,088 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 06:37:20,088 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash 844613284, now seen corresponding path program 1 times [2019-09-10 06:37:20,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:20,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:20,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,092 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:20,224 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 06:37:20,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:20,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:37:20,224 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:20,225 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:37:20,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:37:20,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:37:20,229 INFO L87 Difference]: Start difference. First operand 182 states and 273 transitions. Second operand 5 states. [2019-09-10 06:37:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:20,369 INFO L93 Difference]: Finished difference Result 656 states and 1012 transitions. [2019-09-10 06:37:20,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:37:20,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-10 06:37:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:20,376 INFO L225 Difference]: With dead ends: 656 [2019-09-10 06:37:20,377 INFO L226 Difference]: Without dead ends: 656 [2019-09-10 06:37:20,377 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 06:37:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-09-10 06:37:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 338. [2019-09-10 06:37:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2019-09-10 06:37:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 513 transitions. [2019-09-10 06:37:20,413 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 513 transitions. Word has length 43 [2019-09-10 06:37:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:20,413 INFO L475 AbstractCegarLoop]: Abstraction has 338 states and 513 transitions. [2019-09-10 06:37:20,414 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:37:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 513 transitions. [2019-09-10 06:37:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-10 06:37:20,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:20,416 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:37:20,416 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:20,417 INFO L82 PathProgramCache]: Analyzing trace with hash 394675230, now seen corresponding path program 1 times [2019-09-10 06:37:20,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:20,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:20,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,419 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:20,546 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 06:37:20,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:20,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:37:20,547 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:20,547 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:37:20,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:37:20,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:37:20,548 INFO L87 Difference]: Start difference. First operand 338 states and 513 transitions. Second operand 5 states. [2019-09-10 06:37:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:20,631 INFO L93 Difference]: Finished difference Result 854 states and 1299 transitions. [2019-09-10 06:37:20,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:37:20,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-09-10 06:37:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:20,641 INFO L225 Difference]: With dead ends: 854 [2019-09-10 06:37:20,641 INFO L226 Difference]: Without dead ends: 854 [2019-09-10 06:37:20,641 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:37:20,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2019-09-10 06:37:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 850. [2019-09-10 06:37:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2019-09-10 06:37:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1297 transitions. [2019-09-10 06:37:20,689 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1297 transitions. Word has length 44 [2019-09-10 06:37:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:20,689 INFO L475 AbstractCegarLoop]: Abstraction has 850 states and 1297 transitions. [2019-09-10 06:37:20,689 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:37:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1297 transitions. [2019-09-10 06:37:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-10 06:37:20,692 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:20,692 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] [2019-09-10 06:37:20,692 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:20,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1517509475, now seen corresponding path program 1 times [2019-09-10 06:37:20,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:20,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:20,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,695 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:20,753 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 06:37:20,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:20,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:37:20,755 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:20,755 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:37:20,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:37:20,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:20,756 INFO L87 Difference]: Start difference. First operand 850 states and 1297 transitions. Second operand 3 states. [2019-09-10 06:37:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:20,784 INFO L93 Difference]: Finished difference Result 1412 states and 2114 transitions. [2019-09-10 06:37:20,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:37:20,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-09-10 06:37:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:20,795 INFO L225 Difference]: With dead ends: 1412 [2019-09-10 06:37:20,795 INFO L226 Difference]: Without dead ends: 1412 [2019-09-10 06:37:20,796 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 06:37:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-09-10 06:37:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1410. [2019-09-10 06:37:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1410 states. [2019-09-10 06:37:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2113 transitions. [2019-09-10 06:37:20,837 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2113 transitions. Word has length 44 [2019-09-10 06:37:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:20,838 INFO L475 AbstractCegarLoop]: Abstraction has 1410 states and 2113 transitions. [2019-09-10 06:37:20,838 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:37:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2113 transitions. [2019-09-10 06:37:20,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-10 06:37:20,844 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:20,845 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 06:37:20,845 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash -108258923, now seen corresponding path program 1 times [2019-09-10 06:37:20,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:20,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:20,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:20,848 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:20,990 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 06:37:20,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:20,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 06:37:20,991 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:20,992 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 06:37:20,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 06:37:20,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-10 06:37:20,994 INFO L87 Difference]: Start difference. First operand 1410 states and 2113 transitions. Second operand 6 states. [2019-09-10 06:37:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:21,239 INFO L93 Difference]: Finished difference Result 4070 states and 6067 transitions. [2019-09-10 06:37:21,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:37:21,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2019-09-10 06:37:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:21,263 INFO L225 Difference]: With dead ends: 4070 [2019-09-10 06:37:21,263 INFO L226 Difference]: Without dead ends: 4070 [2019-09-10 06:37:21,264 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-09-10 06:37:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2019-09-10 06:37:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 4066. [2019-09-10 06:37:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4066 states. [2019-09-10 06:37:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 6065 transitions. [2019-09-10 06:37:21,387 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 6065 transitions. Word has length 46 [2019-09-10 06:37:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:21,387 INFO L475 AbstractCegarLoop]: Abstraction has 4066 states and 6065 transitions. [2019-09-10 06:37:21,387 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 06:37:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 6065 transitions. [2019-09-10 06:37:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-10 06:37:21,389 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:21,389 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 06:37:21,389 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:21,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1517905744, now seen corresponding path program 1 times [2019-09-10 06:37:21,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:21,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:21,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:21,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:21,393 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:21,480 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 06:37:21,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:21,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:37:21,481 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:21,482 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:37:21,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:37:21,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:37:21,483 INFO L87 Difference]: Start difference. First operand 4066 states and 6065 transitions. Second operand 5 states. [2019-09-10 06:37:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:21,592 INFO L93 Difference]: Finished difference Result 8394 states and 12249 transitions. [2019-09-10 06:37:21,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 06:37:21,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-09-10 06:37:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:21,634 INFO L225 Difference]: With dead ends: 8394 [2019-09-10 06:37:21,635 INFO L226 Difference]: Without dead ends: 8394 [2019-09-10 06:37:21,635 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 06:37:21,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8394 states. [2019-09-10 06:37:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8394 to 4354. [2019-09-10 06:37:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2019-09-10 06:37:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6353 transitions. [2019-09-10 06:37:21,841 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6353 transitions. Word has length 46 [2019-09-10 06:37:21,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:21,842 INFO L475 AbstractCegarLoop]: Abstraction has 4354 states and 6353 transitions. [2019-09-10 06:37:21,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:37:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6353 transitions. [2019-09-10 06:37:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-10 06:37:21,843 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:21,843 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:37:21,844 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash -179942495, now seen corresponding path program 1 times [2019-09-10 06:37:21,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:21,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:21,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:21,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:21,847 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:21,906 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 06:37:21,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:21,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:37:21,907 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:21,908 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:37:21,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:37:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:21,909 INFO L87 Difference]: Start difference. First operand 4354 states and 6353 transitions. Second operand 3 states. [2019-09-10 06:37:21,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:21,979 INFO L93 Difference]: Finished difference Result 6076 states and 8782 transitions. [2019-09-10 06:37:21,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:37:21,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-10 06:37:21,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:22,018 INFO L225 Difference]: With dead ends: 6076 [2019-09-10 06:37:22,018 INFO L226 Difference]: Without dead ends: 6076 [2019-09-10 06:37:22,019 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:22,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2019-09-10 06:37:22,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 6074. [2019-09-10 06:37:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2019-09-10 06:37:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 8781 transitions. [2019-09-10 06:37:22,289 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 8781 transitions. Word has length 47 [2019-09-10 06:37:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:22,290 INFO L475 AbstractCegarLoop]: Abstraction has 6074 states and 8781 transitions. [2019-09-10 06:37:22,290 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:37:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 8781 transitions. [2019-09-10 06:37:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 06:37:22,293 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:22,293 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] [2019-09-10 06:37:22,294 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:22,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:22,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1778003244, now seen corresponding path program 1 times [2019-09-10 06:37:22,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:22,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:22,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:22,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:22,296 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:37:22,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:37:22,476 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:37:22,477 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2019-09-10 06:37:22,480 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [122], [127], [140], [142], [155], [163], [182], [193], [195], [198], [201], [204], [206], [208], [246], [248], [261], [269], [291], [292], [296], [297], [298] [2019-09-10 06:37:22,537 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:37:22,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:37:22,696 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:37:23,079 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:37:23,082 INFO L272 AbstractInterpreter]: Visited 58 different actions 358 times. Merged at 34 different actions 256 times. Widened at 11 different actions 41 times. Performed 1243 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1243 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 36 fixpoints after 13 different actions. Largest state had 97 variables. [2019-09-10 06:37:23,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:23,088 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:37:23,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:37:23,088 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 06:37:23,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:23,107 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:37:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:23,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 06:37:23,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:37:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 06:37:23,299 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:37:23,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:37:23,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:37:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:37:23,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:37:23,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2019-09-10 06:37:23,463 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:37:23,464 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 06:37:23,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 06:37:23,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2019-09-10 06:37:23,464 INFO L87 Difference]: Start difference. First operand 6074 states and 8781 transitions. Second operand 6 states. [2019-09-10 06:37:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:23,602 INFO L93 Difference]: Finished difference Result 10711 states and 15368 transitions. [2019-09-10 06:37:23,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:37:23,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2019-09-10 06:37:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:23,654 INFO L225 Difference]: With dead ends: 10711 [2019-09-10 06:37:23,655 INFO L226 Difference]: Without dead ends: 10711 [2019-09-10 06:37:23,656 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2019-09-10 06:37:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10711 states. [2019-09-10 06:37:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10711 to 10066. [2019-09-10 06:37:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10066 states. [2019-09-10 06:37:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 14437 transitions. [2019-09-10 06:37:23,971 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 14437 transitions. Word has length 64 [2019-09-10 06:37:23,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:23,972 INFO L475 AbstractCegarLoop]: Abstraction has 10066 states and 14437 transitions. [2019-09-10 06:37:23,972 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 06:37:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 14437 transitions. [2019-09-10 06:37:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 06:37:23,982 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:23,983 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:37:23,983 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:23,984 INFO L82 PathProgramCache]: Analyzing trace with hash 123591245, now seen corresponding path program 1 times [2019-09-10 06:37:23,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:23,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:23,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:23,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:23,988 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:24,131 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 06:37:24,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:37:24,132 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:37:24,132 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-09-10 06:37:24,133 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [74], [77], [80], [83], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [184], [187], [195], [198], [201], [204], [206], [208], [248], [261], [269], [291], [292], [296], [297], [298] [2019-09-10 06:37:24,140 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:37:24,141 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:37:24,172 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:37:24,303 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:37:24,303 INFO L272 AbstractInterpreter]: Visited 52 different actions 202 times. Merged at 25 different actions 128 times. Widened at 9 different actions 11 times. Performed 736 root evaluator evaluations with a maximum evaluation depth of 5. Performed 736 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 7 fixpoints after 4 different actions. Largest state had 97 variables. [2019-09-10 06:37:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:24,304 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:37:24,473 INFO L227 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 82.56% of their original sizes. [2019-09-10 06:37:24,473 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:37:26,249 INFO L420 sIntCurrentIteration]: We unified 64 AI predicates to 64 [2019-09-10 06:37:26,250 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:37:26,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:37:26,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [39] imperfect sequences [7] total 44 [2019-09-10 06:37:26,251 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:26,252 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-10 06:37:26,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-10 06:37:26,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2019-09-10 06:37:26,253 INFO L87 Difference]: Start difference. First operand 10066 states and 14437 transitions. Second operand 39 states. [2019-09-10 06:37:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:40,044 INFO L93 Difference]: Finished difference Result 22063 states and 31284 transitions. [2019-09-10 06:37:40,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2019-09-10 06:37:40,044 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 65 [2019-09-10 06:37:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:40,106 INFO L225 Difference]: With dead ends: 22063 [2019-09-10 06:37:40,106 INFO L226 Difference]: Without dead ends: 22063 [2019-09-10 06:37:40,112 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6706 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2861, Invalid=16321, Unknown=0, NotChecked=0, Total=19182 [2019-09-10 06:37:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22063 states. [2019-09-10 06:37:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22063 to 13357. [2019-09-10 06:37:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13357 states. [2019-09-10 06:37:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13357 states to 13357 states and 19016 transitions. [2019-09-10 06:37:40,454 INFO L78 Accepts]: Start accepts. Automaton has 13357 states and 19016 transitions. Word has length 65 [2019-09-10 06:37:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:40,454 INFO L475 AbstractCegarLoop]: Abstraction has 13357 states and 19016 transitions. [2019-09-10 06:37:40,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-10 06:37:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 13357 states and 19016 transitions. [2019-09-10 06:37:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 06:37:40,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:40,458 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] [2019-09-10 06:37:40,458 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:40,459 INFO L82 PathProgramCache]: Analyzing trace with hash -310142611, now seen corresponding path program 1 times [2019-09-10 06:37:40,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:40,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:40,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:40,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:40,461 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:37:40,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:40,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:37:40,526 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:40,527 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:37:40,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:37:40,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:40,527 INFO L87 Difference]: Start difference. First operand 13357 states and 19016 transitions. Second operand 3 states. [2019-09-10 06:37:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:40,643 INFO L93 Difference]: Finished difference Result 19861 states and 27803 transitions. [2019-09-10 06:37:40,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:37:40,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-10 06:37:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:40,685 INFO L225 Difference]: With dead ends: 19861 [2019-09-10 06:37:40,685 INFO L226 Difference]: Without dead ends: 19861 [2019-09-10 06:37:40,685 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 06:37:40,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19861 states. [2019-09-10 06:37:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19861 to 19859. [2019-09-10 06:37:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19859 states. [2019-09-10 06:37:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19859 states to 19859 states and 27802 transitions. [2019-09-10 06:37:41,023 INFO L78 Accepts]: Start accepts. Automaton has 19859 states and 27802 transitions. Word has length 65 [2019-09-10 06:37:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:41,023 INFO L475 AbstractCegarLoop]: Abstraction has 19859 states and 27802 transitions. [2019-09-10 06:37:41,023 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:37:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19859 states and 27802 transitions. [2019-09-10 06:37:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 06:37:41,030 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:41,030 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] [2019-09-10 06:37:41,030 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2019538005, now seen corresponding path program 1 times [2019-09-10 06:37:41,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:41,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:41,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:41,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:41,033 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:37:41,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:41,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:37:41,080 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:41,080 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:37:41,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:37:41,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:41,081 INFO L87 Difference]: Start difference. First operand 19859 states and 27802 transitions. Second operand 3 states. [2019-09-10 06:37:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:41,149 INFO L93 Difference]: Finished difference Result 23171 states and 31583 transitions. [2019-09-10 06:37:41,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:37:41,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-10 06:37:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:41,202 INFO L225 Difference]: With dead ends: 23171 [2019-09-10 06:37:41,203 INFO L226 Difference]: Without dead ends: 20009 [2019-09-10 06:37:41,203 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 06:37:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2019-09-10 06:37:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 16780. [2019-09-10 06:37:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16780 states. [2019-09-10 06:37:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16780 states to 16780 states and 22967 transitions. [2019-09-10 06:37:41,476 INFO L78 Accepts]: Start accepts. Automaton has 16780 states and 22967 transitions. Word has length 65 [2019-09-10 06:37:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:41,476 INFO L475 AbstractCegarLoop]: Abstraction has 16780 states and 22967 transitions. [2019-09-10 06:37:41,476 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:37:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 16780 states and 22967 transitions. [2019-09-10 06:37:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 06:37:41,488 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:41,488 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:37:41,488 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:41,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1823556591, now seen corresponding path program 1 times [2019-09-10 06:37:41,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:41,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:41,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:41,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:41,491 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:37:41,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:41,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:37:41,560 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:41,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:37:41,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:37:41,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:37:41,561 INFO L87 Difference]: Start difference. First operand 16780 states and 22967 transitions. Second operand 3 states. [2019-09-10 06:37:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:41,623 INFO L93 Difference]: Finished difference Result 22007 states and 29521 transitions. [2019-09-10 06:37:41,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:37:41,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-10 06:37:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:41,668 INFO L225 Difference]: With dead ends: 22007 [2019-09-10 06:37:41,668 INFO L226 Difference]: Without dead ends: 21486 [2019-09-10 06:37:41,668 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 06:37:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21486 states. [2019-09-10 06:37:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21486 to 21248. [2019-09-10 06:37:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21248 states. [2019-09-10 06:37:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 28612 transitions. [2019-09-10 06:37:42,583 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 28612 transitions. Word has length 65 [2019-09-10 06:37:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:42,584 INFO L475 AbstractCegarLoop]: Abstraction has 21248 states and 28612 transitions. [2019-09-10 06:37:42,584 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:37:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 28612 transitions. [2019-09-10 06:37:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 06:37:42,591 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:42,592 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:37:42,592 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1984574874, now seen corresponding path program 1 times [2019-09-10 06:37:42,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:42,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:42,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:42,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:42,598 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:37:42,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:37:42,714 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:37:42,715 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-09-10 06:37:42,715 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [248], [261], [269], [291], [292], [296], [297], [298] [2019-09-10 06:37:42,718 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:37:42,718 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:37:42,729 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:37:42,802 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:37:42,802 INFO L272 AbstractInterpreter]: Visited 52 different actions 229 times. Merged at 25 different actions 152 times. Widened at 8 different actions 11 times. Performed 781 root evaluator evaluations with a maximum evaluation depth of 5. Performed 781 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 8 fixpoints after 4 different actions. Largest state had 97 variables. [2019-09-10 06:37:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:42,802 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:37:42,871 INFO L227 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 82.66% of their original sizes. [2019-09-10 06:37:42,871 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:37:44,248 INFO L420 sIntCurrentIteration]: We unified 64 AI predicates to 64 [2019-09-10 06:37:44,248 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:37:44,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:37:44,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [39] imperfect sequences [7] total 44 [2019-09-10 06:37:44,248 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:44,249 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-10 06:37:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-10 06:37:44,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2019-09-10 06:37:44,250 INFO L87 Difference]: Start difference. First operand 21248 states and 28612 transitions. Second operand 39 states. [2019-09-10 06:37:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:57,048 INFO L93 Difference]: Finished difference Result 35773 states and 48091 transitions. [2019-09-10 06:37:57,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2019-09-10 06:37:57,048 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 65 [2019-09-10 06:37:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:57,106 INFO L225 Difference]: With dead ends: 35773 [2019-09-10 06:37:57,107 INFO L226 Difference]: Without dead ends: 35773 [2019-09-10 06:37:57,112 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2447, Invalid=14583, Unknown=0, NotChecked=0, Total=17030 [2019-09-10 06:37:57,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35773 states. [2019-09-10 06:37:57,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35773 to 22161. [2019-09-10 06:37:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22161 states. [2019-09-10 06:37:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22161 states to 22161 states and 29716 transitions. [2019-09-10 06:37:57,626 INFO L78 Accepts]: Start accepts. Automaton has 22161 states and 29716 transitions. Word has length 65 [2019-09-10 06:37:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:57,627 INFO L475 AbstractCegarLoop]: Abstraction has 22161 states and 29716 transitions. [2019-09-10 06:37:57,627 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-10 06:37:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 22161 states and 29716 transitions. [2019-09-10 06:37:57,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:37:57,631 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:57,632 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 06:37:57,632 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:57,633 INFO L82 PathProgramCache]: Analyzing trace with hash 436879228, now seen corresponding path program 1 times [2019-09-10 06:37:57,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:57,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:57,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:57,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:57,634 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-10 06:37:57,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:37:57,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:37:57,695 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:57,695 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:37:57,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:37:57,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:37:57,696 INFO L87 Difference]: Start difference. First operand 22161 states and 29716 transitions. Second operand 5 states. [2019-09-10 06:37:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:37:57,875 INFO L93 Difference]: Finished difference Result 29818 states and 39459 transitions. [2019-09-10 06:37:57,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:37:57,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-09-10 06:37:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:37:57,922 INFO L225 Difference]: With dead ends: 29818 [2019-09-10 06:37:57,922 INFO L226 Difference]: Without dead ends: 29818 [2019-09-10 06:37:57,925 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 06:37:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29818 states. [2019-09-10 06:37:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29818 to 22144. [2019-09-10 06:37:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22144 states. [2019-09-10 06:37:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22144 states to 22144 states and 29431 transitions. [2019-09-10 06:37:58,250 INFO L78 Accepts]: Start accepts. Automaton has 22144 states and 29431 transitions. Word has length 66 [2019-09-10 06:37:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:37:58,250 INFO L475 AbstractCegarLoop]: Abstraction has 22144 states and 29431 transitions. [2019-09-10 06:37:58,250 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:37:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 22144 states and 29431 transitions. [2019-09-10 06:37:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 06:37:58,256 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:37:58,256 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 06:37:58,256 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:37:58,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:58,256 INFO L82 PathProgramCache]: Analyzing trace with hash -630666185, now seen corresponding path program 1 times [2019-09-10 06:37:58,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:37:58,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:58,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:37:58,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:37:58,258 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:37:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:37:58,330 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 06:37:58,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:37:58,331 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:37:58,331 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 06:37:58,331 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [193], [195], [208], [216], [235], [237], [240], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:37:58,335 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:37:58,336 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:37:58,346 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:37:58,427 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:37:58,428 INFO L272 AbstractInterpreter]: Visited 56 different actions 239 times. Merged at 29 different actions 153 times. Widened at 8 different actions 13 times. Performed 899 root evaluator evaluations with a maximum evaluation depth of 5. Performed 899 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 13 fixpoints after 5 different actions. Largest state had 97 variables. [2019-09-10 06:37:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:37:58,428 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:37:58,506 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.18% of their original sizes. [2019-09-10 06:37:58,506 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:37:59,983 INFO L420 sIntCurrentIteration]: We unified 65 AI predicates to 65 [2019-09-10 06:37:59,984 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:37:59,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:37:59,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [7] total 45 [2019-09-10 06:37:59,984 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:37:59,985 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-10 06:37:59,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-10 06:37:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2019-09-10 06:37:59,986 INFO L87 Difference]: Start difference. First operand 22144 states and 29431 transitions. Second operand 40 states. [2019-09-10 06:38:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:38:18,285 INFO L93 Difference]: Finished difference Result 38169 states and 50513 transitions. [2019-09-10 06:38:18,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-09-10 06:38:18,285 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 66 [2019-09-10 06:38:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:38:18,330 INFO L225 Difference]: With dead ends: 38169 [2019-09-10 06:38:18,331 INFO L226 Difference]: Without dead ends: 38169 [2019-09-10 06:38:18,336 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6273 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2817, Invalid=16089, Unknown=0, NotChecked=0, Total=18906 [2019-09-10 06:38:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38169 states. [2019-09-10 06:38:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38169 to 23392. [2019-09-10 06:38:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23392 states. [2019-09-10 06:38:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23392 states to 23392 states and 30929 transitions. [2019-09-10 06:38:18,707 INFO L78 Accepts]: Start accepts. Automaton has 23392 states and 30929 transitions. Word has length 66 [2019-09-10 06:38:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:38:18,707 INFO L475 AbstractCegarLoop]: Abstraction has 23392 states and 30929 transitions. [2019-09-10 06:38:18,707 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-10 06:38:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 23392 states and 30929 transitions. [2019-09-10 06:38:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 06:38:18,713 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:38:18,713 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:38:18,714 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:38:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1155394591, now seen corresponding path program 1 times [2019-09-10 06:38:18,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:38:18,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:18,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:18,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:18,716 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:38:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:18,800 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 06:38:18,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:38:18,801 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:38:18,801 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 68 with the following transitions: [2019-09-10 06:38:18,803 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [74], [77], [80], [83], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [145], [148], [151], [153], [155], [184], [187], [195], [198], [201], [204], [206], [208], [248], [261], [269], [291], [292], [296], [297], [298] [2019-09-10 06:38:18,809 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:38:18,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:38:18,820 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:38:18,904 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:38:18,906 INFO L272 AbstractInterpreter]: Visited 54 different actions 227 times. Merged at 27 different actions 150 times. Widened at 10 different actions 15 times. Performed 824 root evaluator evaluations with a maximum evaluation depth of 5. Performed 824 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 7 fixpoints after 5 different actions. Largest state had 98 variables. [2019-09-10 06:38:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:18,906 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:38:18,997 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 82.93% of their original sizes. [2019-09-10 06:38:18,997 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:38:20,781 INFO L420 sIntCurrentIteration]: We unified 66 AI predicates to 66 [2019-09-10 06:38:20,782 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:38:20,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:38:20,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [41] imperfect sequences [7] total 46 [2019-09-10 06:38:20,782 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:38:20,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-10 06:38:20,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-10 06:38:20,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1441, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 06:38:20,785 INFO L87 Difference]: Start difference. First operand 23392 states and 30929 transitions. Second operand 41 states. [2019-09-10 06:38:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:38:40,580 INFO L93 Difference]: Finished difference Result 42172 states and 55673 transitions. [2019-09-10 06:38:40,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2019-09-10 06:38:40,580 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 67 [2019-09-10 06:38:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:38:40,619 INFO L225 Difference]: With dead ends: 42172 [2019-09-10 06:38:40,620 INFO L226 Difference]: Without dead ends: 42172 [2019-09-10 06:38:40,623 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10078 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3991, Invalid=24065, Unknown=0, NotChecked=0, Total=28056 [2019-09-10 06:38:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42172 states. [2019-09-10 06:38:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42172 to 24889. [2019-09-10 06:38:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24889 states. [2019-09-10 06:38:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24889 states to 24889 states and 32833 transitions. [2019-09-10 06:38:40,949 INFO L78 Accepts]: Start accepts. Automaton has 24889 states and 32833 transitions. Word has length 67 [2019-09-10 06:38:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:38:40,949 INFO L475 AbstractCegarLoop]: Abstraction has 24889 states and 32833 transitions. [2019-09-10 06:38:40,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-10 06:38:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 24889 states and 32833 transitions. [2019-09-10 06:38:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 06:38:40,954 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:38:40,955 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 06:38:40,955 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:38:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1243625945, now seen corresponding path program 1 times [2019-09-10 06:38:40,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:38:40,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:40,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:40,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:40,957 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:38:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:41,029 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 06:38:41,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:38:41,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:38:41,030 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:38:41,030 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:38:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:38:41,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:38:41,031 INFO L87 Difference]: Start difference. First operand 24889 states and 32833 transitions. Second operand 5 states. [2019-09-10 06:38:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:38:41,196 INFO L93 Difference]: Finished difference Result 35463 states and 47241 transitions. [2019-09-10 06:38:41,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:38:41,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2019-09-10 06:38:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:38:41,253 INFO L225 Difference]: With dead ends: 35463 [2019-09-10 06:38:41,253 INFO L226 Difference]: Without dead ends: 35463 [2019-09-10 06:38:41,253 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 06:38:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35463 states. [2019-09-10 06:38:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35463 to 30099. [2019-09-10 06:38:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30099 states. [2019-09-10 06:38:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30099 states to 30099 states and 39813 transitions. [2019-09-10 06:38:41,749 INFO L78 Accepts]: Start accepts. Automaton has 30099 states and 39813 transitions. Word has length 67 [2019-09-10 06:38:41,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:38:41,749 INFO L475 AbstractCegarLoop]: Abstraction has 30099 states and 39813 transitions. [2019-09-10 06:38:41,749 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:38:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 30099 states and 39813 transitions. [2019-09-10 06:38:41,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:38:41,756 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:38:41,756 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 06:38:41,757 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:38:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:41,757 INFO L82 PathProgramCache]: Analyzing trace with hash 22065829, now seen corresponding path program 1 times [2019-09-10 06:38:41,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:38:41,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:41,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:41,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:41,759 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:38:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:38:41,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:38:41,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:38:41,800 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:38:41,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:38:41,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:38:41,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:38:41,802 INFO L87 Difference]: Start difference. First operand 30099 states and 39813 transitions. Second operand 3 states. [2019-09-10 06:38:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:38:41,866 INFO L93 Difference]: Finished difference Result 22761 states and 29898 transitions. [2019-09-10 06:38:41,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:38:41,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-10 06:38:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:38:41,890 INFO L225 Difference]: With dead ends: 22761 [2019-09-10 06:38:41,891 INFO L226 Difference]: Without dead ends: 22761 [2019-09-10 06:38:41,891 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 06:38:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22761 states. [2019-09-10 06:38:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22761 to 22671. [2019-09-10 06:38:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22671 states. [2019-09-10 06:38:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22671 states to 22671 states and 29794 transitions. [2019-09-10 06:38:42,148 INFO L78 Accepts]: Start accepts. Automaton has 22671 states and 29794 transitions. Word has length 68 [2019-09-10 06:38:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:38:42,149 INFO L475 AbstractCegarLoop]: Abstraction has 22671 states and 29794 transitions. [2019-09-10 06:38:42,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:38:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 22671 states and 29794 transitions. [2019-09-10 06:38:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:38:42,153 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:38:42,153 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, 1] [2019-09-10 06:38:42,153 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:38:42,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:42,154 INFO L82 PathProgramCache]: Analyzing trace with hash -411668027, now seen corresponding path program 1 times [2019-09-10 06:38:42,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:38:42,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:42,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:38:42,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:38:42,160 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:38:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:38:42,263 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 06:38:42,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:38:42,263 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:38:42,264 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2019-09-10 06:38:42,264 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [193], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:38:42,267 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:38:42,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:38:42,282 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:38:42,408 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 06:38:42,409 INFO L272 AbstractInterpreter]: Visited 58 different actions 265 times. Merged at 31 different actions 175 times. Widened at 10 different actions 21 times. Performed 986 root evaluator evaluations with a maximum evaluation depth of 5. Performed 986 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 14 fixpoints after 9 different actions. Largest state had 98 variables. [2019-09-10 06:38:42,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:38:42,409 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 06:38:42,511 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 81.8% of their original sizes. [2019-09-10 06:38:42,511 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 06:38:44,184 INFO L420 sIntCurrentIteration]: We unified 67 AI predicates to 67 [2019-09-10 06:38:44,185 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 06:38:44,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 06:38:44,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [41] imperfect sequences [7] total 46 [2019-09-10 06:38:44,185 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:38:44,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-10 06:38:44,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-10 06:38:44,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2019-09-10 06:38:44,187 INFO L87 Difference]: Start difference. First operand 22671 states and 29794 transitions. Second operand 41 states. [2019-09-10 06:39:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:39:02,564 INFO L93 Difference]: Finished difference Result 41001 states and 53802 transitions. [2019-09-10 06:39:02,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2019-09-10 06:39:02,564 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 68 [2019-09-10 06:39:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:39:02,607 INFO L225 Difference]: With dead ends: 41001 [2019-09-10 06:39:02,607 INFO L226 Difference]: Without dead ends: 41001 [2019-09-10 06:39:02,609 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2911, Invalid=17395, Unknown=0, NotChecked=0, Total=20306 [2019-09-10 06:39:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41001 states. [2019-09-10 06:39:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41001 to 24988. [2019-09-10 06:39:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24988 states. [2019-09-10 06:39:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24988 states to 24988 states and 32719 transitions. [2019-09-10 06:39:02,909 INFO L78 Accepts]: Start accepts. Automaton has 24988 states and 32719 transitions. Word has length 68 [2019-09-10 06:39:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:39:02,910 INFO L475 AbstractCegarLoop]: Abstraction has 24988 states and 32719 transitions. [2019-09-10 06:39:02,910 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-10 06:39:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 24988 states and 32719 transitions. [2019-09-10 06:39:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:39:02,912 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:39:02,912 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, 1] [2019-09-10 06:39:02,913 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:39:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:39:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1890118876, now seen corresponding path program 1 times [2019-09-10 06:39:02,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:39:02,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:02,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:39:02,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:02,915 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:39:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:39:02,987 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 06:39:02,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:39:02,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:39:02,987 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:39:02,988 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:39:02,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:39:02,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:39:02,988 INFO L87 Difference]: Start difference. First operand 24988 states and 32719 transitions. Second operand 5 states. [2019-09-10 06:39:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:39:03,135 INFO L93 Difference]: Finished difference Result 32388 states and 42595 transitions. [2019-09-10 06:39:03,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:39:03,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:39:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:39:03,386 INFO L225 Difference]: With dead ends: 32388 [2019-09-10 06:39:03,386 INFO L226 Difference]: Without dead ends: 32373 [2019-09-10 06:39:03,389 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 06:39:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32373 states. [2019-09-10 06:39:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32373 to 30112. [2019-09-10 06:39:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30112 states. [2019-09-10 06:39:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30112 states to 30112 states and 39479 transitions. [2019-09-10 06:39:03,661 INFO L78 Accepts]: Start accepts. Automaton has 30112 states and 39479 transitions. Word has length 68 [2019-09-10 06:39:03,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:39:03,661 INFO L475 AbstractCegarLoop]: Abstraction has 30112 states and 39479 transitions. [2019-09-10 06:39:03,661 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:39:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 30112 states and 39479 transitions. [2019-09-10 06:39:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 06:39:03,665 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:39:03,665 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, 1] [2019-09-10 06:39:03,666 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:39:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:39:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1936151433, now seen corresponding path program 1 times [2019-09-10 06:39:03,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:39:03,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:03,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:39:03,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:03,668 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:39:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:39:03,733 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 06:39:03,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:39:03,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 06:39:03,734 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:39:03,734 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 06:39:03,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 06:39:03,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:39:03,735 INFO L87 Difference]: Start difference. First operand 30112 states and 39479 transitions. Second operand 5 states. [2019-09-10 06:39:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:39:03,883 INFO L93 Difference]: Finished difference Result 35379 states and 46482 transitions. [2019-09-10 06:39:03,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:39:03,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-10 06:39:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:39:03,919 INFO L225 Difference]: With dead ends: 35379 [2019-09-10 06:39:03,920 INFO L226 Difference]: Without dead ends: 35364 [2019-09-10 06:39:03,920 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 06:39:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35364 states. [2019-09-10 06:39:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35364 to 33088. [2019-09-10 06:39:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33088 states. [2019-09-10 06:39:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33088 states to 33088 states and 43355 transitions. [2019-09-10 06:39:04,230 INFO L78 Accepts]: Start accepts. Automaton has 33088 states and 43355 transitions. Word has length 68 [2019-09-10 06:39:04,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:39:04,230 INFO L475 AbstractCegarLoop]: Abstraction has 33088 states and 43355 transitions. [2019-09-10 06:39:04,230 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 06:39:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33088 states and 43355 transitions. [2019-09-10 06:39:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-10 06:39:04,235 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:39:04,235 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, 1, 1, 1, 1] [2019-09-10 06:39:04,235 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:39:04,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:39:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash -552320143, now seen corresponding path program 1 times [2019-09-10 06:39:04,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:39:04,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:04,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:39:04,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:04,237 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:39:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:39:04,320 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 06:39:04,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:39:04,320 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:39:04,321 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 72 with the following transitions: [2019-09-10 06:39:04,321 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [237], [240], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:39:04,322 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:39:04,323 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:39:04,332 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:39:04,453 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:39:04,454 INFO L272 AbstractInterpreter]: Visited 62 different actions 339 times. Merged at 37 different actions 242 times. Widened at 12 different actions 32 times. Performed 1144 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1144 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 20 fixpoints after 9 different actions. Largest state had 98 variables. [2019-09-10 06:39:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:39:04,454 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:39:04,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:39:04,455 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:39:04,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:39:04,472 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:39:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:39:04,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:39:04,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:39:04,627 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 06:39:04,627 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:39:04,673 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 06:39:04,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:39:04,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2019-09-10 06:39:04,683 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:39:04,684 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 06:39:04,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 06:39:04,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-10 06:39:04,685 INFO L87 Difference]: Start difference. First operand 33088 states and 43355 transitions. Second operand 11 states. [2019-09-10 06:39:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:39:05,220 INFO L93 Difference]: Finished difference Result 59322 states and 76496 transitions. [2019-09-10 06:39:05,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:39:05,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2019-09-10 06:39:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:39:05,284 INFO L225 Difference]: With dead ends: 59322 [2019-09-10 06:39:05,285 INFO L226 Difference]: Without dead ends: 59322 [2019-09-10 06:39:05,285 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-09-10 06:39:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59322 states. [2019-09-10 06:39:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59322 to 36633. [2019-09-10 06:39:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36633 states. [2019-09-10 06:39:05,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36633 states to 36633 states and 47903 transitions. [2019-09-10 06:39:05,728 INFO L78 Accepts]: Start accepts. Automaton has 36633 states and 47903 transitions. Word has length 71 [2019-09-10 06:39:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:39:05,729 INFO L475 AbstractCegarLoop]: Abstraction has 36633 states and 47903 transitions. [2019-09-10 06:39:05,729 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 06:39:05,729 INFO L276 IsEmpty]: Start isEmpty. Operand 36633 states and 47903 transitions. [2019-09-10 06:39:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-10 06:39:05,732 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:39:05,732 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, 1, 1, 1, 1, 1, 1] [2019-09-10 06:39:05,732 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:39:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:39:05,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1860539110, now seen corresponding path program 1 times [2019-09-10 06:39:05,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:39:05,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:05,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:39:05,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:39:05,734 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:39:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:39:05,946 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 06:39:05,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:39:05,946 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:39:05,947 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 74 with the following transitions: [2019-09-10 06:39:05,947 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [145], [148], [151], [153], [155], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:39:05,949 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:39:05,949 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:39:05,957 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:39:06,110 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:39:06,110 INFO L272 AbstractInterpreter]: Visited 68 different actions 464 times. Merged at 44 different actions 354 times. Widened at 13 different actions 43 times. Performed 1562 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1562 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 35 fixpoints after 12 different actions. Largest state had 99 variables. [2019-09-10 06:39:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:39:06,110 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:39:06,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:39:06,111 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 06:39:06,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:39:06,131 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 06:39:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:39:06,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 50 conjunts are in the unsatisfiable core [2019-09-10 06:39:06,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:39:06,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:39:06,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:39:06,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:39:07,375 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-10 06:39:08,091 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-10 06:39:08,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:39:08,951 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 06:39:08,951 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:39:09,636 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-09-10 06:39:10,318 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-09-10 06:39:10,592 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 06:39:10,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:39:10,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 23] total 50 [2019-09-10 06:39:10,597 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:39:10,597 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-10 06:39:10,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-10 06:39:10,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2063, Unknown=0, NotChecked=0, Total=2450 [2019-09-10 06:39:10,599 INFO L87 Difference]: Start difference. First operand 36633 states and 47903 transitions. Second operand 31 states. [2019-09-10 06:39:12,789 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-10 06:39:13,228 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 06:39:13,583 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-09-10 06:39:14,815 WARN L188 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-10 06:39:15,619 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-10 06:39:16,190 WARN L188 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 06:39:16,687 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2019-09-10 06:39:17,050 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-10 06:39:17,578 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-10 06:39:18,173 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 06:39:18,441 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:39:20,071 WARN L188 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:39:20,433 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-10 06:39:20,957 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-10 06:39:21,300 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 06:39:21,480 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:39:22,009 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 06:39:22,384 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 06:39:23,431 WARN L188 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-10 06:39:24,098 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 06:39:25,547 WARN L188 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 06:39:25,935 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 06:39:26,347 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:39:26,577 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-10 06:39:27,767 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:39:29,690 WARN L188 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 06:39:29,962 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 06:39:30,384 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-10 06:39:30,881 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 06:39:32,136 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-10 06:39:32,855 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-09-10 06:39:33,199 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:39:33,492 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-10 06:39:33,768 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:39:34,660 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:39:37,475 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:39:42,272 WARN L188 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-10 06:39:43,436 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 06:39:47,035 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-10 06:39:49,015 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-10 06:39:49,244 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 06:39:49,515 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-09-10 06:39:50,450 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 06:39:50,944 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-10 06:39:51,826 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:39:52,458 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2019-09-10 06:39:52,787 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 06:39:54,309 WARN L188 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-10 06:39:54,556 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 06:39:54,869 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 06:39:55,095 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 06:39:55,964 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:39:56,404 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-10 06:39:56,723 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2019-09-10 06:39:57,163 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-10 06:39:57,738 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 06:39:57,998 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 06:39:58,183 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 06:39:59,415 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 06:39:59,796 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:40:00,091 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-10 06:40:00,472 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-09-10 06:40:00,968 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-10 06:40:01,842 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:40:02,170 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:40:02,799 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2019-09-10 06:40:03,436 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-10 06:40:04,021 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:40:04,413 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 06:40:05,083 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 06:40:05,685 WARN L188 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-10 06:40:07,441 WARN L188 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-10 06:40:09,803 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 06:40:10,952 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-10 06:40:11,501 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:40:11,858 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 06:40:12,625 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 06:40:13,006 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 06:40:13,563 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:40:14,727 WARN L188 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-10 06:40:15,251 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-10 06:40:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:40:20,322 INFO L93 Difference]: Finished difference Result 539377 states and 697651 transitions. [2019-09-10 06:40:20,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2019-09-10 06:40:20,326 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 73 [2019-09-10 06:40:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:40:21,128 INFO L225 Difference]: With dead ends: 539377 [2019-09-10 06:40:21,128 INFO L226 Difference]: Without dead ends: 539149 [2019-09-10 06:40:21,134 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39430 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=17156, Invalid=78634, Unknown=0, NotChecked=0, Total=95790 [2019-09-10 06:40:21,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539149 states. [2019-09-10 06:40:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539149 to 103883. [2019-09-10 06:40:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103883 states. [2019-09-10 06:40:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103883 states to 103883 states and 136198 transitions. [2019-09-10 06:40:28,525 INFO L78 Accepts]: Start accepts. Automaton has 103883 states and 136198 transitions. Word has length 73 [2019-09-10 06:40:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:40:28,526 INFO L475 AbstractCegarLoop]: Abstraction has 103883 states and 136198 transitions. [2019-09-10 06:40:28,526 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-10 06:40:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 103883 states and 136198 transitions. [2019-09-10 06:40:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-10 06:40:28,529 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:40:28,529 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:40:28,530 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:40:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:40:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2027727893, now seen corresponding path program 1 times [2019-09-10 06:40:28,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:40:28,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:40:28,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:40:28,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:40:28,532 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:40:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:40:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:40:29,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:40:29,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:40:29,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:40:29,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:40:29,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:40:29,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:40:29,439 INFO L87 Difference]: Start difference. First operand 103883 states and 136198 transitions. Second operand 3 states. [2019-09-10 06:40:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:40:29,656 INFO L93 Difference]: Finished difference Result 89167 states and 115275 transitions. [2019-09-10 06:40:29,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:40:29,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-09-10 06:40:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:40:29,745 INFO L225 Difference]: With dead ends: 89167 [2019-09-10 06:40:29,745 INFO L226 Difference]: Without dead ends: 89167 [2019-09-10 06:40:29,745 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:40:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89167 states. [2019-09-10 06:40:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89167 to 75741. [2019-09-10 06:40:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75741 states. [2019-09-10 06:40:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75741 states to 75741 states and 97644 transitions. [2019-09-10 06:40:30,416 INFO L78 Accepts]: Start accepts. Automaton has 75741 states and 97644 transitions. Word has length 74 [2019-09-10 06:40:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:40:30,417 INFO L475 AbstractCegarLoop]: Abstraction has 75741 states and 97644 transitions. [2019-09-10 06:40:30,417 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:40:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 75741 states and 97644 transitions. [2019-09-10 06:40:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-10 06:40:30,421 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:40:30,421 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:40:30,421 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:40:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:40:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2138214961, now seen corresponding path program 1 times [2019-09-10 06:40:30,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:40:30,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:40:30,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:40:30,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:40:30,423 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:40:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:40:31,197 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 06:40:31,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:40:31,197 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:40:31,197 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 76 with the following transitions: [2019-09-10 06:40:31,197 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [86], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:40:31,199 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:40:31,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:40:31,208 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:40:31,368 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:40:31,368 INFO L272 AbstractInterpreter]: Visited 70 different actions 542 times. Merged at 46 different actions 427 times. Widened at 16 different actions 56 times. Performed 1834 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1834 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 43 fixpoints after 16 different actions. Largest state had 99 variables. [2019-09-10 06:40:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:40:31,369 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:40:31,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:40:31,369 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 06:40:31,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:40:31,380 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:40:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:40:31,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-10 06:40:31,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:40:31,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:40:32,012 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 06:40:32,012 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:40:32,581 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 06:40:32,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:40:32,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2019-09-10 06:40:32,591 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:40:32,591 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 06:40:32,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 06:40:32,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1359, Unknown=0, NotChecked=0, Total=1482 [2019-09-10 06:40:32,592 INFO L87 Difference]: Start difference. First operand 75741 states and 97644 transitions. Second operand 28 states. [2019-09-10 06:40:38,681 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2019-09-10 06:40:40,796 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2019-09-10 06:40:40,972 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:40:41,204 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 06:40:41,446 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 06:40:42,239 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-09-10 06:40:43,151 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-09-10 06:40:43,413 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:40:43,658 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-10 06:40:43,950 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:40:44,143 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:40:44,350 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-10 06:40:44,628 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2019-09-10 06:40:44,926 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2019-09-10 06:40:46,139 WARN L188 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:40:46,452 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-10 06:40:46,683 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 06:40:46,874 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-10 06:40:47,121 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:40:47,301 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-10 06:40:48,694 WARN L188 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:40:49,045 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-10 06:40:49,356 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:40:49,632 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:40:50,871 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:40:51,979 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-09-10 06:40:52,164 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-09-10 06:40:53,411 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-10 06:40:54,716 WARN L188 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:40:54,968 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:40:55,207 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:40:55,391 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 06:40:55,736 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:40:55,911 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:40:56,173 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:40:56,790 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-10 06:40:57,005 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-10 06:40:57,242 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:40:57,617 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:40:57,866 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-10 06:40:58,212 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:40:58,360 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 06:40:58,565 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:40:59,091 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:40:59,318 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:40:59,512 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-10 06:40:59,728 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:41:00,221 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-10 06:41:00,459 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:41:00,692 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:41:00,918 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:41:01,137 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-10 06:41:01,438 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:41:01,611 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 06:41:01,779 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-10 06:41:02,049 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:41:02,207 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-10 06:41:02,420 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-10 06:41:02,581 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 06:41:02,935 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-10 06:41:03,144 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-10 06:41:03,376 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:41:03,635 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-10 06:41:03,862 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 06:41:04,199 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-10 06:41:04,372 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 06:41:04,647 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 06:41:04,911 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:41:05,147 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-10 06:41:05,399 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 06:41:05,927 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-10 06:41:06,104 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2019-09-10 06:41:06,348 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 06:41:06,540 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-10 06:41:06,797 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-10 06:41:07,542 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:41:07,838 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:41:08,867 WARN L188 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 06:41:09,169 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-10 06:41:09,479 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-10 06:41:09,682 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2019-09-10 06:41:09,956 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:41:10,137 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:41:10,407 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 06:41:10,712 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:41:11,001 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-10 06:41:11,294 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:41:11,508 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-10 06:41:11,721 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2019-09-10 06:41:12,056 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-10 06:41:12,333 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 06:41:12,680 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:41:13,056 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-10 06:41:13,585 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:41:13,965 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 06:41:14,152 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 06:41:14,470 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-10 06:41:14,696 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2019-09-10 06:41:14,854 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 06:41:15,111 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 06:41:15,318 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-10 06:41:15,592 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-10 06:41:15,826 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-09-10 06:41:16,003 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 06:41:16,370 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2019-09-10 06:41:16,536 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-10 06:41:16,865 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:41:17,235 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:41:17,466 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:41:17,748 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 06:41:18,031 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-10 06:41:18,189 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2019-09-10 06:41:18,463 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-10 06:41:18,682 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 06:41:18,941 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2019-09-10 06:41:19,280 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:41:19,671 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-10 06:41:19,973 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2019-09-10 06:41:20,172 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:41:20,533 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:41:20,873 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-10 06:41:21,482 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-10 06:41:21,891 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2019-09-10 06:41:22,785 WARN L188 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2019-09-10 06:41:23,063 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:41:23,370 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2019-09-10 06:41:23,632 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2019-09-10 06:41:23,808 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-10 06:41:24,020 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:41:24,321 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-10 06:41:24,528 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:41:24,833 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-10 06:41:25,025 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:41:25,356 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 06:41:25,684 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-09-10 06:41:25,908 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-10 06:41:26,187 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2019-09-10 06:41:26,634 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 82 [2019-09-10 06:41:26,877 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2019-09-10 06:41:27,216 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-10 06:41:27,405 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:41:27,770 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2019-09-10 06:41:28,038 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 06:41:28,195 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-10 06:41:28,475 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-10 06:41:28,774 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2019-09-10 06:41:28,956 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:41:29,313 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2019-09-10 06:41:29,684 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:41:30,473 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-09-10 06:41:30,781 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-10 06:41:30,993 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-10 06:41:31,194 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-10 06:41:31,639 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-10 06:41:32,080 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 06:41:32,423 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-10 06:41:32,854 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2019-09-10 06:41:33,060 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-10 06:41:33,476 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:41:33,712 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-10 06:41:33,931 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:41:34,121 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 06:41:34,441 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-10 06:41:36,176 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2019-09-10 06:41:37,624 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-09-10 06:41:37,954 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-09-10 06:41:38,217 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:41:38,748 WARN L188 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-10 06:41:39,730 WARN L188 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 06:41:40,698 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-10 06:41:40,912 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-10 06:41:43,435 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 06:41:43,692 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:41:43,935 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 06:41:45,656 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2019-09-10 06:41:46,455 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-10 06:41:47,078 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-10 06:41:47,265 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-10 06:41:47,558 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:41:48,217 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-10 06:41:48,575 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:41:49,292 WARN L188 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:41:49,522 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:41:49,718 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:41:50,097 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2019-09-10 06:41:50,324 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 06:41:50,580 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:41:50,766 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:41:50,935 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:41:51,111 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-10 06:41:51,292 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-10 06:41:51,598 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-10 06:41:52,735 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-10 06:41:53,300 WARN L188 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-10 06:41:54,118 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-10 06:41:54,301 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:41:54,767 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-10 06:41:54,986 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:41:55,395 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-10 06:41:55,601 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-10 06:41:55,808 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 06:41:58,533 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-10 06:41:58,787 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 06:41:58,979 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 06:41:59,264 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2019-09-10 06:42:00,260 WARN L188 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 06:42:00,625 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:42:01,117 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-10 06:42:01,337 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-10 06:42:01,677 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-10 06:42:01,884 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 06:42:02,106 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-10 06:42:03,286 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-09-10 06:42:03,602 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2019-09-10 06:42:03,844 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-10 06:42:04,042 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-10 06:42:04,267 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-10 06:42:04,978 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-09-10 06:42:05,325 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-10 06:42:05,498 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-10 06:42:05,659 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 06:42:05,918 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 06:42:06,161 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:42:06,379 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:42:06,693 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2019-09-10 06:42:07,520 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:42:07,802 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 06:42:08,066 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-10 06:42:08,500 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 06:42:09,252 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2019-09-10 06:42:09,569 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-09-10 06:42:09,830 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:42:10,069 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-10 06:42:10,286 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-10 06:42:10,615 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-10 06:42:10,828 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-10 06:42:11,058 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:42:11,328 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 06:42:11,614 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-10 06:42:11,757 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 06:42:11,997 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-10 06:42:12,164 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 06:42:12,434 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-10 06:42:12,707 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-10 06:42:12,996 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:42:13,784 WARN L188 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:42:14,768 WARN L188 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-10 06:42:14,990 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:42:15,494 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 06:42:15,680 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-09-10 06:42:16,041 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 06:42:16,310 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:42:16,561 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:42:16,815 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:42:17,078 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2019-09-10 06:42:17,285 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-09-10 06:42:17,491 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 06:42:17,698 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 06:42:17,902 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 06:42:18,401 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 06:42:18,641 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-10 06:42:18,873 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2019-09-10 06:42:19,114 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-10 06:42:19,340 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-10 06:42:19,818 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-10 06:42:19,985 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2019-09-10 06:42:20,641 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2019-09-10 06:42:20,981 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-10 06:42:21,185 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-10 06:42:21,384 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-10 06:42:21,599 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-09-10 06:42:22,010 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-10 06:42:22,394 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2019-09-10 06:42:22,782 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2019-09-10 06:42:23,104 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:42:23,277 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:42:23,516 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-10 06:42:23,752 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2019-09-10 06:42:24,280 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-09-10 06:42:24,511 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-10 06:42:24,789 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-10 06:42:25,423 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-10 06:42:25,717 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2019-09-10 06:42:27,542 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2019-09-10 06:42:27,877 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2019-09-10 06:42:28,552 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 06:42:29,066 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2019-09-10 06:42:29,461 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-10 06:42:29,830 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 06:42:30,497 WARN L188 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-10 06:42:30,743 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2019-09-10 06:42:30,978 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2019-09-10 06:42:31,246 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-10 06:42:31,613 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:42:32,462 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-10 06:42:32,649 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:42:32,956 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2019-09-10 06:42:33,714 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2019-09-10 06:42:33,924 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-10 06:42:34,893 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 06:42:35,343 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:42:35,560 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:42:36,799 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-10 06:42:37,914 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:42:38,575 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:42:38,741 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:42:38,936 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 06:42:39,187 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 06:42:40,066 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2019-09-10 06:42:40,265 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-10 06:42:40,625 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-10 06:42:41,175 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 06:42:41,366 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:42:41,744 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 06:42:41,969 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 06:42:42,146 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-10 06:42:42,579 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-10 06:42:42,801 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:42:43,148 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 06:42:43,466 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 06:42:43,806 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-10 06:42:44,001 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 06:42:44,178 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:42:44,679 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:42:44,994 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2019-09-10 06:42:45,169 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:42:45,505 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 06:42:45,818 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-10 06:42:46,226 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 06:42:46,400 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-10 06:42:46,574 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 06:42:46,827 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-10 06:42:47,181 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2019-09-10 06:42:48,612 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-10 06:42:49,037 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2019-09-10 06:42:49,212 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-10 06:42:49,429 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-10 06:42:49,783 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 06:42:50,021 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-10 06:42:50,214 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2019-09-10 06:42:50,428 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-09-10 06:42:50,685 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:42:51,010 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 06:42:51,180 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 06:42:51,686 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-10 06:42:51,886 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:42:52,158 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:42:52,414 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:42:52,679 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-10 06:42:52,864 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-10 06:42:53,154 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-09-10 06:42:53,399 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-10 06:42:53,670 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 06:42:53,930 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-10 06:42:54,129 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-10 06:42:54,464 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:42:55,389 WARN L188 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:42:55,593 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-10 06:42:56,611 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:42:57,863 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2019-09-10 06:42:58,221 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-10 06:42:58,458 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:42:58,675 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-10 06:42:59,194 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 06:42:59,414 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 06:42:59,590 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:42:59,794 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-10 06:43:00,185 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-10 06:43:00,351 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-10 06:43:01,161 WARN L188 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2019-09-10 06:43:01,342 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:43:01,603 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2019-09-10 06:43:01,908 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:43:02,177 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-10 06:43:02,456 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 06:43:02,713 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-10 06:43:03,282 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 06:43:03,817 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-10 06:43:03,994 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-10 06:43:04,153 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:43:04,303 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-10 06:43:04,641 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-10 06:43:05,033 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-10 06:43:05,513 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2019-09-10 06:43:06,148 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 06:43:06,332 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-10 06:43:06,570 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 06:43:06,770 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:43:07,010 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:43:07,452 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 06:43:07,636 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:43:08,697 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-10 06:43:08,905 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:43:09,085 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 06:43:09,257 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:43:09,805 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:43:10,132 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-10 06:43:10,620 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-10 06:43:10,824 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-10 06:43:11,011 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-10 06:43:11,256 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-10 06:43:11,455 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 06:43:11,658 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-10 06:43:12,050 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 06:43:12,647 WARN L188 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:43:13,372 WARN L188 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:43:13,567 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:43:13,770 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:43:14,026 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2019-09-10 06:43:14,332 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-10 06:43:14,608 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-10 06:43:15,063 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 06:43:15,543 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2019-09-10 06:43:15,813 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 06:43:16,053 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-10 06:43:16,226 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-10 06:43:16,458 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-10 06:43:16,993 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2019-09-10 06:43:17,261 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2019-09-10 06:43:17,535 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-10 06:43:17,734 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 06:43:17,999 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:43:18,181 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:43:18,413 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 06:43:18,764 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 06:43:19,337 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-09-10 06:43:19,721 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 06:43:20,424 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 06:43:20,643 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:43:21,161 WARN L188 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-10 06:43:21,378 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 06:43:21,630 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-10 06:43:21,927 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:43:22,221 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2019-09-10 06:43:22,499 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2019-09-10 06:43:22,944 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2019-09-10 06:43:24,229 WARN L188 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 06:43:24,761 WARN L188 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:43:25,031 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 06:43:25,327 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:43:25,616 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 06:43:25,926 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:43:26,265 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2019-09-10 06:43:26,523 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-10 06:43:26,692 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 06:43:26,944 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2019-09-10 06:43:27,692 WARN L188 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-09-10 06:43:27,869 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-10 06:43:28,095 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-10 06:43:28,521 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 06:43:28,791 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2019-09-10 06:43:29,035 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:43:29,321 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:43:29,563 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-10 06:43:29,833 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2019-09-10 06:43:30,156 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 06:43:30,801 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 06:43:30,977 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-10 06:43:31,183 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-10 06:43:31,532 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 06:43:31,728 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 06:43:32,296 WARN L188 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-10 06:43:32,618 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2019-09-10 06:43:32,928 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-10 06:43:33,581 WARN L188 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-10 06:43:33,889 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 06:43:34,270 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2019-09-10 06:43:34,467 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-10 06:43:34,798 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:43:35,764 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-10 06:43:36,040 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2019-09-10 06:43:36,809 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-10 06:43:37,355 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-09-10 06:43:37,734 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2019-09-10 06:43:37,972 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2019-09-10 06:43:38,443 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 06:43:38,664 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-10 06:43:38,823 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-09-10 06:43:39,621 WARN L188 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-10 06:43:40,309 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 06:43:41,413 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-10 06:43:41,904 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-10 06:43:42,080 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-10 06:43:42,851 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 06:43:44,208 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-10 06:43:44,390 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-10 06:43:44,804 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-10 06:43:45,434 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-10 06:43:45,982 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 06:43:46,713 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 06:43:46,921 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 06:43:47,281 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 06:43:47,792 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-10 06:43:48,182 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 06:43:48,362 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 06:43:48,855 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 06:43:49,049 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 06:43:49,915 WARN L188 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 06:43:50,537 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 06:43:50,782 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-10 06:43:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:43:50,852 INFO L93 Difference]: Finished difference Result 440007 states and 561172 transitions. [2019-09-10 06:43:50,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 789 states. [2019-09-10 06:43:50,852 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 75 [2019-09-10 06:43:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:43:51,345 INFO L225 Difference]: With dead ends: 440007 [2019-09-10 06:43:51,345 INFO L226 Difference]: Without dead ends: 440007 [2019-09-10 06:43:51,364 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 816 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315428 ImplicationChecksByTransitivity, 165.8s TimeCoverageRelationStatistics Valid=59116, Invalid=609190, Unknown=0, NotChecked=0, Total=668306 [2019-09-10 06:43:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440007 states. [2019-09-10 06:43:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440007 to 95234. [2019-09-10 06:43:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95234 states. [2019-09-10 06:43:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95234 states to 95234 states and 123101 transitions. [2019-09-10 06:43:54,065 INFO L78 Accepts]: Start accepts. Automaton has 95234 states and 123101 transitions. Word has length 75 [2019-09-10 06:43:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:43:54,065 INFO L475 AbstractCegarLoop]: Abstraction has 95234 states and 123101 transitions. [2019-09-10 06:43:54,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 06:43:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 95234 states and 123101 transitions. [2019-09-10 06:43:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-10 06:43:54,082 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:43:54,082 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:54,082 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:43:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:43:54,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1697802756, now seen corresponding path program 1 times [2019-09-10 06:43:54,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:43:54,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:43:54,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:43:54,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:43:54,083 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:43:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:43:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-10 06:43:54,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:43:54,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:43:54,131 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:43:54,131 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:43:54,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:43:54,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:43:54,132 INFO L87 Difference]: Start difference. First operand 95234 states and 123101 transitions. Second operand 3 states. [2019-09-10 06:43:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:43:54,415 INFO L93 Difference]: Finished difference Result 104591 states and 135742 transitions. [2019-09-10 06:43:54,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:43:54,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-09-10 06:43:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:43:54,549 INFO L225 Difference]: With dead ends: 104591 [2019-09-10 06:43:54,549 INFO L226 Difference]: Without dead ends: 104591 [2019-09-10 06:43:54,549 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 06:43:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104591 states. [2019-09-10 06:43:55,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104591 to 87019. [2019-09-10 06:43:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87019 states. [2019-09-10 06:43:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87019 states to 87019 states and 112766 transitions. [2019-09-10 06:43:55,320 INFO L78 Accepts]: Start accepts. Automaton has 87019 states and 112766 transitions. Word has length 99 [2019-09-10 06:43:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:43:55,320 INFO L475 AbstractCegarLoop]: Abstraction has 87019 states and 112766 transitions. [2019-09-10 06:43:55,320 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:43:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 87019 states and 112766 transitions. [2019-09-10 06:43:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-10 06:43:55,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:43:55,330 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:43:55,330 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:43:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:43:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2076016627, now seen corresponding path program 1 times [2019-09-10 06:43:55,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:43:55,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:43:55,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:43:55,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:43:55,331 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:43:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:43:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 06:43:55,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:43:55,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:43:55,370 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:43:55,370 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:43:55,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:43:55,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:43:55,370 INFO L87 Difference]: Start difference. First operand 87019 states and 112766 transitions. Second operand 3 states. [2019-09-10 06:43:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:43:55,633 INFO L93 Difference]: Finished difference Result 74513 states and 95631 transitions. [2019-09-10 06:43:55,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:43:55,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-09-10 06:43:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:43:55,735 INFO L225 Difference]: With dead ends: 74513 [2019-09-10 06:43:55,736 INFO L226 Difference]: Without dead ends: 74513 [2019-09-10 06:43:55,736 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 06:43:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74513 states. [2019-09-10 06:43:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74513 to 72319. [2019-09-10 06:43:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72319 states. [2019-09-10 06:43:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72319 states to 72319 states and 92906 transitions. [2019-09-10 06:43:59,130 INFO L78 Accepts]: Start accepts. Automaton has 72319 states and 92906 transitions. Word has length 100 [2019-09-10 06:43:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:43:59,130 INFO L475 AbstractCegarLoop]: Abstraction has 72319 states and 92906 transitions. [2019-09-10 06:43:59,130 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:43:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 72319 states and 92906 transitions. [2019-09-10 06:43:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-10 06:43:59,139 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:43:59,139 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:59,139 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:43:59,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:43:59,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1042526479, now seen corresponding path program 1 times [2019-09-10 06:43:59,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:43:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:43:59,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:43:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:43:59,141 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:43:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:43:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:43:59,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:43:59,198 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:43:59,198 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 102 with the following transitions: [2019-09-10 06:43:59,198 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [88], [90], [93], [96], [99], [102], [104], [106], [109], [112], [114], [117], [118], [120], [129], [142], [145], [148], [151], [153], [155], [159], [161], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:43:59,200 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:43:59,200 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:43:59,209 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:43:59,344 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:43:59,345 INFO L272 AbstractInterpreter]: Visited 72 different actions 479 times. Merged at 48 different actions 359 times. Widened at 14 different actions 39 times. Performed 1542 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1542 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 17 different actions. Largest state had 99 variables. [2019-09-10 06:43:59,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:43:59,345 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:43:59,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:43:59,346 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 06:43:59,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:43:59,360 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:43:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:43:59,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:43:59,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:43:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:43:59,514 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:43:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:43:59,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:43:59,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2019-09-10 06:43:59,592 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:43:59,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 06:43:59,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 06:43:59,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-10 06:43:59,593 INFO L87 Difference]: Start difference. First operand 72319 states and 92906 transitions. Second operand 10 states. [2019-09-10 06:44:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:00,149 INFO L93 Difference]: Finished difference Result 83176 states and 103586 transitions. [2019-09-10 06:44:00,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:44:00,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2019-09-10 06:44:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:00,225 INFO L225 Difference]: With dead ends: 83176 [2019-09-10 06:44:00,225 INFO L226 Difference]: Without dead ends: 83176 [2019-09-10 06:44:00,225 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:44:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83176 states. [2019-09-10 06:44:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83176 to 59807. [2019-09-10 06:44:00,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59807 states. [2019-09-10 06:44:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59807 states to 59807 states and 75556 transitions. [2019-09-10 06:44:00,822 INFO L78 Accepts]: Start accepts. Automaton has 59807 states and 75556 transitions. Word has length 101 [2019-09-10 06:44:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:00,823 INFO L475 AbstractCegarLoop]: Abstraction has 59807 states and 75556 transitions. [2019-09-10 06:44:00,823 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 06:44:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 59807 states and 75556 transitions. [2019-09-10 06:44:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-10 06:44:00,829 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:00,829 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 06:44:00,830 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:00,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:00,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2006698838, now seen corresponding path program 1 times [2019-09-10 06:44:00,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:00,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:00,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:00,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:00,831 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 06:44:00,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:00,928 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:44:00,928 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2019-09-10 06:44:00,928 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [72], [74], [77], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [122], [127], [140], [142], [145], [148], [151], [153], [155], [193], [195], [208], [216], [235], [246], [248], [261], [269], [291], [292], [296], [297], [298] [2019-09-10 06:44:00,929 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:44:00,929 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:44:00,938 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:44:01,036 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:44:01,036 INFO L272 AbstractInterpreter]: Visited 58 different actions 353 times. Merged at 34 different actions 252 times. Widened at 11 different actions 33 times. Performed 1267 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1267 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 34 fixpoints after 10 different actions. Largest state had 97 variables. [2019-09-10 06:44:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:01,037 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:44:01,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:01,037 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 06:44:01,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:01,064 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:44:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:01,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-10 06:44:01,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:44:01,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-10 06:44:01,397 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:44:01,571 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-10 06:44:01,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:44:01,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 21 [2019-09-10 06:44:01,680 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:44:01,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-10 06:44:01,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-10 06:44:01,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:44:01,681 INFO L87 Difference]: Start difference. First operand 59807 states and 75556 transitions. Second operand 13 states. [2019-09-10 06:44:05,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:05,750 INFO L93 Difference]: Finished difference Result 213641 states and 265355 transitions. [2019-09-10 06:44:05,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-10 06:44:05,750 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2019-09-10 06:44:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:05,969 INFO L225 Difference]: With dead ends: 213641 [2019-09-10 06:44:05,970 INFO L226 Difference]: Without dead ends: 213641 [2019-09-10 06:44:05,970 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1309, Invalid=4543, Unknown=0, NotChecked=0, Total=5852 [2019-09-10 06:44:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213641 states. [2019-09-10 06:44:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213641 to 103856. [2019-09-10 06:44:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103856 states. [2019-09-10 06:44:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103856 states to 103856 states and 129650 transitions. [2019-09-10 06:44:07,176 INFO L78 Accepts]: Start accepts. Automaton has 103856 states and 129650 transitions. Word has length 102 [2019-09-10 06:44:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:07,177 INFO L475 AbstractCegarLoop]: Abstraction has 103856 states and 129650 transitions. [2019-09-10 06:44:07,177 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-10 06:44:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 103856 states and 129650 transitions. [2019-09-10 06:44:07,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-10 06:44:07,186 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:07,186 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:07,187 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:07,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:07,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1889552001, now seen corresponding path program 1 times [2019-09-10 06:44:07,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:07,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:07,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:07,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:07,188 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:44:07,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:07,241 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:44:07,241 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 116 with the following transitions: [2019-09-10 06:44:07,242 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [86], [88], [90], [93], [104], [106], [109], [112], [114], [117], [118], [120], [129], [140], [142], [155], [163], [182], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [246], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:44:07,243 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:44:07,243 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:44:07,252 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:44:07,482 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:44:07,482 INFO L272 AbstractInterpreter]: Visited 65 different actions 634 times. Merged at 40 different actions 480 times. Widened at 17 different actions 100 times. Performed 2017 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2017 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 66 fixpoints after 14 different actions. Largest state had 98 variables. [2019-09-10 06:44:07,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:07,482 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:44:07,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:07,483 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:44:07,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:07,501 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:44:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:07,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-10 06:44:07,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:44:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 43 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:44:07,668 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:44:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 43 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:44:07,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:44:07,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2019-09-10 06:44:07,749 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:44:07,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 06:44:07,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 06:44:07,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-10 06:44:07,750 INFO L87 Difference]: Start difference. First operand 103856 states and 129650 transitions. Second operand 10 states. [2019-09-10 06:44:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:08,273 INFO L93 Difference]: Finished difference Result 106864 states and 129942 transitions. [2019-09-10 06:44:08,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-10 06:44:08,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2019-09-10 06:44:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:08,372 INFO L225 Difference]: With dead ends: 106864 [2019-09-10 06:44:08,372 INFO L226 Difference]: Without dead ends: 106864 [2019-09-10 06:44:08,373 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:44:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106864 states. [2019-09-10 06:44:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106864 to 83984. [2019-09-10 06:44:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83984 states. [2019-09-10 06:44:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83984 states to 83984 states and 102826 transitions. [2019-09-10 06:44:09,512 INFO L78 Accepts]: Start accepts. Automaton has 83984 states and 102826 transitions. Word has length 115 [2019-09-10 06:44:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:09,512 INFO L475 AbstractCegarLoop]: Abstraction has 83984 states and 102826 transitions. [2019-09-10 06:44:09,512 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 06:44:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 83984 states and 102826 transitions. [2019-09-10 06:44:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:44:09,520 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:09,520 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:44:09,520 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:09,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:09,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1001256649, now seen corresponding path program 1 times [2019-09-10 06:44:09,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:09,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:09,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:09,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:09,522 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:44:09,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:44:09,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 06:44:09,573 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:44:09,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 06:44:09,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 06:44:09,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 06:44:09,574 INFO L87 Difference]: Start difference. First operand 83984 states and 102826 transitions. Second operand 4 states. [2019-09-10 06:44:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:09,829 INFO L93 Difference]: Finished difference Result 83827 states and 100998 transitions. [2019-09-10 06:44:09,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:44:09,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-09-10 06:44:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:09,903 INFO L225 Difference]: With dead ends: 83827 [2019-09-10 06:44:09,903 INFO L226 Difference]: Without dead ends: 83827 [2019-09-10 06:44:09,903 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:44:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83827 states. [2019-09-10 06:44:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83827 to 55372. [2019-09-10 06:44:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55372 states. [2019-09-10 06:44:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55372 states to 55372 states and 67110 transitions. [2019-09-10 06:44:10,462 INFO L78 Accepts]: Start accepts. Automaton has 55372 states and 67110 transitions. Word has length 118 [2019-09-10 06:44:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:10,462 INFO L475 AbstractCegarLoop]: Abstraction has 55372 states and 67110 transitions. [2019-09-10 06:44:10,462 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 06:44:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 55372 states and 67110 transitions. [2019-09-10 06:44:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:44:10,471 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:10,471 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:44:10,471 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:10,472 INFO L82 PathProgramCache]: Analyzing trace with hash -648561230, now seen corresponding path program 1 times [2019-09-10 06:44:10,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:10,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:10,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:10,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:10,473 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:44:10,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:10,750 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:44:10,750 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2019-09-10 06:44:10,751 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [70], [72], [74], [77], [80], [88], [90], [93], [96], [99], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [140], [142], [145], [148], [151], [153], [155], [191], [193], [195], [208], [216], [219], [222], [225], [227], [235], [237], [240], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:44:10,753 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:44:10,753 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:44:10,761 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:44:11,119 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:44:11,119 INFO L272 AbstractInterpreter]: Visited 74 different actions 876 times. Merged at 50 different actions 659 times. Widened at 20 different actions 111 times. Performed 2571 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2571 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 126 fixpoints after 20 different actions. Largest state had 99 variables. [2019-09-10 06:44:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:11,120 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:44:11,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:11,120 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:44:11,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:11,149 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:44:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:11,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:44:11,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:44:11,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:11,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:11,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:11,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:44:11,659 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:44:11,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:44:12,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:44:12,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2019-09-10 06:44:12,109 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:44:12,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-10 06:44:12,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-10 06:44:12,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2019-09-10 06:44:12,110 INFO L87 Difference]: Start difference. First operand 55372 states and 67110 transitions. Second operand 22 states. [2019-09-10 06:44:15,076 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-09-10 06:44:18,761 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2019-09-10 06:44:19,109 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2019-09-10 06:44:19,368 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 06:44:20,650 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-10 06:44:20,988 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2019-09-10 06:44:21,416 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:44:22,413 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-10 06:44:22,899 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 06:44:23,648 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-10 06:44:25,958 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2019-09-10 06:44:26,726 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-10 06:44:28,328 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:44:28,703 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:44:29,079 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2019-09-10 06:44:29,359 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:44:29,561 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2019-09-10 06:44:29,743 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:44:30,063 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-10 06:44:30,252 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:44:31,033 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 06:44:34,280 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2019-09-10 06:44:34,440 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-10 06:44:34,922 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-10 06:44:35,817 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-10 06:44:36,107 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-10 06:44:36,437 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-10 06:44:36,950 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-10 06:44:37,554 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2019-09-10 06:44:37,716 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-10 06:44:38,152 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-10 06:44:38,765 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-10 06:44:39,238 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 06:44:40,532 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-10 06:44:42,068 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-10 06:44:42,525 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2019-09-10 06:44:43,263 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-09-10 06:44:43,432 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-10 06:44:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:44,391 INFO L93 Difference]: Finished difference Result 212897 states and 252921 transitions. [2019-09-10 06:44:44,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2019-09-10 06:44:44,391 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2019-09-10 06:44:44,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:44,662 INFO L225 Difference]: With dead ends: 212897 [2019-09-10 06:44:44,662 INFO L226 Difference]: Without dead ends: 212897 [2019-09-10 06:44:44,665 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18961 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=8319, Invalid=44351, Unknown=0, NotChecked=0, Total=52670 [2019-09-10 06:44:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212897 states. [2019-09-10 06:44:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212897 to 86465. [2019-09-10 06:44:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86465 states. [2019-09-10 06:44:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86465 states to 86465 states and 104879 transitions. [2019-09-10 06:44:45,938 INFO L78 Accepts]: Start accepts. Automaton has 86465 states and 104879 transitions. Word has length 118 [2019-09-10 06:44:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:45,939 INFO L475 AbstractCegarLoop]: Abstraction has 86465 states and 104879 transitions. [2019-09-10 06:44:45,939 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-10 06:44:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 86465 states and 104879 transitions. [2019-09-10 06:44:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-10 06:44:45,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:45,949 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:44:45,949 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:45,950 INFO L82 PathProgramCache]: Analyzing trace with hash -301770922, now seen corresponding path program 2 times [2019-09-10 06:44:45,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:45,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:45,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:45,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:45,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 45 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 06:44:46,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:46,171 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:44:46,171 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 06:44:46,171 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 06:44:46,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:46,172 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 06:44:46,185 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 06:44:46,186 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 06:44:46,267 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-10 06:44:46,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 06:44:46,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:44:46,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:44:46,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 45 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 06:44:46,531 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:44:46,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 45 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 06:44:46,774 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:44:46,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 06:44:46,774 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:44:46,775 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 06:44:46,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 06:44:46,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2019-09-10 06:44:46,775 INFO L87 Difference]: Start difference. First operand 86465 states and 104879 transitions. Second operand 17 states. [2019-09-10 06:44:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:49,313 INFO L93 Difference]: Finished difference Result 119498 states and 142931 transitions. [2019-09-10 06:44:49,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-10 06:44:49,313 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 118 [2019-09-10 06:44:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:49,416 INFO L225 Difference]: With dead ends: 119498 [2019-09-10 06:44:49,416 INFO L226 Difference]: Without dead ends: 119498 [2019-09-10 06:44:49,417 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=478, Invalid=1244, Unknown=0, NotChecked=0, Total=1722 [2019-09-10 06:44:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119498 states. [2019-09-10 06:44:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119498 to 63751. [2019-09-10 06:44:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63751 states. [2019-09-10 06:44:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63751 states to 63751 states and 76421 transitions. [2019-09-10 06:44:50,100 INFO L78 Accepts]: Start accepts. Automaton has 63751 states and 76421 transitions. Word has length 118 [2019-09-10 06:44:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:50,100 INFO L475 AbstractCegarLoop]: Abstraction has 63751 states and 76421 transitions. [2019-09-10 06:44:50,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 06:44:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 63751 states and 76421 transitions. [2019-09-10 06:44:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:44:50,110 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:50,110 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:44:50,111 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:50,111 INFO L82 PathProgramCache]: Analyzing trace with hash -260311524, now seen corresponding path program 1 times [2019-09-10 06:44:50,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:50,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:50,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 06:44:50,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:50,112 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 06:44:50,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:44:50,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 06:44:50,161 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:44:50,161 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 06:44:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 06:44:50,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 06:44:50,162 INFO L87 Difference]: Start difference. First operand 63751 states and 76421 transitions. Second operand 4 states. [2019-09-10 06:44:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:44:50,403 INFO L93 Difference]: Finished difference Result 80060 states and 94690 transitions. [2019-09-10 06:44:50,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 06:44:50,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-09-10 06:44:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:44:50,473 INFO L225 Difference]: With dead ends: 80060 [2019-09-10 06:44:50,473 INFO L226 Difference]: Without dead ends: 80060 [2019-09-10 06:44:50,474 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 06:44:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80060 states. [2019-09-10 06:44:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80060 to 61654. [2019-09-10 06:44:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61654 states. [2019-09-10 06:44:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61654 states to 61654 states and 73447 transitions. [2019-09-10 06:44:51,019 INFO L78 Accepts]: Start accepts. Automaton has 61654 states and 73447 transitions. Word has length 119 [2019-09-10 06:44:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:44:51,019 INFO L475 AbstractCegarLoop]: Abstraction has 61654 states and 73447 transitions. [2019-09-10 06:44:51,019 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 06:44:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 61654 states and 73447 transitions. [2019-09-10 06:44:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:44:51,026 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:44:51,026 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:44:51,026 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:44:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:51,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1461019351, now seen corresponding path program 1 times [2019-09-10 06:44:51,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:44:51,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:51,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:51,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:44:51,028 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:44:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:44:51,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:51,358 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:44:51,358 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 120 with the following transitions: [2019-09-10 06:44:51,358 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [86], [88], [90], [93], [96], [104], [106], [109], [112], [114], [117], [118], [120], [129], [138], [142], [155], [163], [166], [169], [172], [174], [182], [184], [187], [195], [198], [201], [204], [206], [208], [237], [240], [246], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:44:51,361 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:44:51,361 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:44:51,368 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:44:51,800 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:44:51,800 INFO L272 AbstractInterpreter]: Visited 73 different actions 879 times. Merged at 49 different actions 679 times. Widened at 19 different actions 142 times. Performed 2740 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2740 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 113 fixpoints after 22 different actions. Largest state had 99 variables. [2019-09-10 06:44:51,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:44:51,800 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:44:51,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:44:51,801 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 06:44:51,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:44:51,820 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 06:44:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:44:51,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 06:44:51,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:44:51,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:44:52,412 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:44:52,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:44:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:44:52,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:44:52,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 32 [2019-09-10 06:44:52,888 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:44:52,888 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-10 06:44:52,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-10 06:44:52,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2019-09-10 06:44:52,889 INFO L87 Difference]: Start difference. First operand 61654 states and 73447 transitions. Second operand 26 states. [2019-09-10 06:44:59,261 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34 [2019-09-10 06:45:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:01,041 INFO L93 Difference]: Finished difference Result 136451 states and 159816 transitions. [2019-09-10 06:45:01,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-09-10 06:45:01,041 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 119 [2019-09-10 06:45:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:01,171 INFO L225 Difference]: With dead ends: 136451 [2019-09-10 06:45:01,171 INFO L226 Difference]: Without dead ends: 136415 [2019-09-10 06:45:01,172 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3732 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2183, Invalid=10473, Unknown=0, NotChecked=0, Total=12656 [2019-09-10 06:45:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136415 states. [2019-09-10 06:45:01,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136415 to 69200. [2019-09-10 06:45:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69200 states. [2019-09-10 06:45:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69200 states to 69200 states and 81972 transitions. [2019-09-10 06:45:01,990 INFO L78 Accepts]: Start accepts. Automaton has 69200 states and 81972 transitions. Word has length 119 [2019-09-10 06:45:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:01,990 INFO L475 AbstractCegarLoop]: Abstraction has 69200 states and 81972 transitions. [2019-09-10 06:45:01,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-10 06:45:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 69200 states and 81972 transitions. [2019-09-10 06:45:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:45:01,997 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:01,997 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:45:01,997 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1016943042, now seen corresponding path program 1 times [2019-09-10 06:45:01,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:01,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:01,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:01,999 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-10 06:45:02,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:02,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:02,042 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:02,042 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:02,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:02,043 INFO L87 Difference]: Start difference. First operand 69200 states and 81972 transitions. Second operand 3 states. [2019-09-10 06:45:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:02,621 INFO L93 Difference]: Finished difference Result 76898 states and 90766 transitions. [2019-09-10 06:45:02,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:02,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-09-10 06:45:02,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:02,681 INFO L225 Difference]: With dead ends: 76898 [2019-09-10 06:45:02,681 INFO L226 Difference]: Without dead ends: 76898 [2019-09-10 06:45:02,682 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 06:45:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76898 states. [2019-09-10 06:45:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76898 to 73798. [2019-09-10 06:45:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73798 states. [2019-09-10 06:45:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73798 states to 73798 states and 87099 transitions. [2019-09-10 06:45:03,239 INFO L78 Accepts]: Start accepts. Automaton has 73798 states and 87099 transitions. Word has length 119 [2019-09-10 06:45:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:03,240 INFO L475 AbstractCegarLoop]: Abstraction has 73798 states and 87099 transitions. [2019-09-10 06:45:03,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 73798 states and 87099 transitions. [2019-09-10 06:45:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-10 06:45:03,248 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:03,248 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:45:03,248 INFO L418 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash -414783836, now seen corresponding path program 2 times [2019-09-10 06:45:03,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:03,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:03,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:03,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:03,250 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:45:03,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:03,608 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:45:03,608 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 06:45:03,608 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 06:45:03,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:03,608 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 06:45:03,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 06:45:03,620 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-10 06:45:03,723 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-10 06:45:03,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 06:45:03,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-10 06:45:03,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:45:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-10 06:45:04,067 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:45:04,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 62 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 06:45:04,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 06:45:04,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [15, 12] total 32 [2019-09-10 06:45:04,430 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:04,431 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-10 06:45:04,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-10 06:45:04,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2019-09-10 06:45:04,431 INFO L87 Difference]: Start difference. First operand 73798 states and 87099 transitions. Second operand 12 states. [2019-09-10 06:45:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:05,446 INFO L93 Difference]: Finished difference Result 76924 states and 90289 transitions. [2019-09-10 06:45:05,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-10 06:45:05,447 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 119 [2019-09-10 06:45:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:05,516 INFO L225 Difference]: With dead ends: 76924 [2019-09-10 06:45:05,516 INFO L226 Difference]: Without dead ends: 76924 [2019-09-10 06:45:05,517 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 218 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=477, Invalid=1593, Unknown=0, NotChecked=0, Total=2070 [2019-09-10 06:45:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76924 states. [2019-09-10 06:45:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76924 to 64968. [2019-09-10 06:45:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64968 states. [2019-09-10 06:45:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64968 states to 64968 states and 76545 transitions. [2019-09-10 06:45:06,073 INFO L78 Accepts]: Start accepts. Automaton has 64968 states and 76545 transitions. Word has length 119 [2019-09-10 06:45:06,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:06,073 INFO L475 AbstractCegarLoop]: Abstraction has 64968 states and 76545 transitions. [2019-09-10 06:45:06,074 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-10 06:45:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 64968 states and 76545 transitions. [2019-09-10 06:45:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-10 06:45:06,079 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:06,080 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:45:06,080 INFO L418 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:06,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2084960889, now seen corresponding path program 1 times [2019-09-10 06:45:06,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:06,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:06,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-10 06:45:06,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:06,081 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-10 06:45:06,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 06:45:06,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 06:45:06,134 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 06:45:06,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 06:45:06,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 06:45:06,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 06:45:06,135 INFO L87 Difference]: Start difference. First operand 64968 states and 76545 transitions. Second operand 3 states. [2019-09-10 06:45:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:06,286 INFO L93 Difference]: Finished difference Result 59261 states and 67883 transitions. [2019-09-10 06:45:06,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 06:45:06,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-09-10 06:45:06,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:06,357 INFO L225 Difference]: With dead ends: 59261 [2019-09-10 06:45:06,357 INFO L226 Difference]: Without dead ends: 59261 [2019-09-10 06:45:06,357 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 06:45:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59261 states. [2019-09-10 06:45:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59261 to 57245. [2019-09-10 06:45:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57245 states. [2019-09-10 06:45:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57245 states to 57245 states and 65584 transitions. [2019-09-10 06:45:07,078 INFO L78 Accepts]: Start accepts. Automaton has 57245 states and 65584 transitions. Word has length 120 [2019-09-10 06:45:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:07,078 INFO L475 AbstractCegarLoop]: Abstraction has 57245 states and 65584 transitions. [2019-09-10 06:45:07,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 06:45:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 57245 states and 65584 transitions. [2019-09-10 06:45:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-10 06:45:07,082 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:07,083 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:45:07,083 INFO L418 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash -544442242, now seen corresponding path program 1 times [2019-09-10 06:45:07,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:07,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:07,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:07,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:07,085 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-10 06:45:07,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:07,464 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:45:07,464 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2019-09-10 06:45:07,464 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [72], [74], [77], [80], [83], [88], [90], [93], [96], [104], [106], [109], [112], [114], [117], [118], [120], [129], [138], [142], [155], [163], [166], [169], [172], [174], [182], [184], [187], [189], [195], [198], [201], [204], [206], [208], [237], [240], [246], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:45:07,466 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:45:07,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:45:07,472 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:45:07,694 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:45:07,694 INFO L272 AbstractInterpreter]: Visited 73 different actions 657 times. Merged at 49 different actions 492 times. Widened at 16 different actions 79 times. Performed 2046 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2046 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 80 fixpoints after 17 different actions. Largest state had 99 variables. [2019-09-10 06:45:07,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:07,694 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:45:07,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:07,695 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 06:45:07,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:07,707 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:45:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:07,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-10 06:45:07,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:45:07,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:07,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:07,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:07,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:09,386 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-09-10 06:45:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:09,434 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:45:09,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:09,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:09,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:45:09,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 22 [2019-09-10 06:45:09,579 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:45:09,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-10 06:45:09,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-10 06:45:09,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-09-10 06:45:09,580 INFO L87 Difference]: Start difference. First operand 57245 states and 65584 transitions. Second operand 21 states. [2019-09-10 06:45:10,672 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2019-09-10 06:45:10,922 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2019-09-10 06:45:11,129 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2019-09-10 06:45:11,505 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 06:45:11,766 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2019-09-10 06:45:11,962 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 06:45:12,296 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-10 06:45:12,712 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-10 06:45:13,264 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-09-10 06:45:13,445 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-10 06:45:13,589 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-09-10 06:45:13,892 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-10 06:45:14,174 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2019-09-10 06:45:15,995 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2019-09-10 06:45:16,687 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2019-09-10 06:45:16,863 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-09-10 06:45:17,025 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2019-09-10 06:45:17,583 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2019-09-10 06:45:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 06:45:17,769 INFO L93 Difference]: Finished difference Result 130562 states and 149305 transitions. [2019-09-10 06:45:17,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2019-09-10 06:45:17,770 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 120 [2019-09-10 06:45:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 06:45:17,957 INFO L225 Difference]: With dead ends: 130562 [2019-09-10 06:45:17,957 INFO L226 Difference]: Without dead ends: 130562 [2019-09-10 06:45:17,958 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 230 SyntacticMatches, 20 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1164, Invalid=5316, Unknown=0, NotChecked=0, Total=6480 [2019-09-10 06:45:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130562 states. [2019-09-10 06:45:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130562 to 73929. [2019-09-10 06:45:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73929 states. [2019-09-10 06:45:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73929 states to 73929 states and 84762 transitions. [2019-09-10 06:45:19,062 INFO L78 Accepts]: Start accepts. Automaton has 73929 states and 84762 transitions. Word has length 120 [2019-09-10 06:45:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 06:45:19,062 INFO L475 AbstractCegarLoop]: Abstraction has 73929 states and 84762 transitions. [2019-09-10 06:45:19,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-10 06:45:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 73929 states and 84762 transitions. [2019-09-10 06:45:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-09-10 06:45:19,067 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 06:45:19,067 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 06:45:19,067 INFO L418 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 06:45:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1017619026, now seen corresponding path program 1 times [2019-09-10 06:45:19,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 06:45:19,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:19,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:19,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 06:45:19,069 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 06:45:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:19,995 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 06:45:19,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:19,996 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 06:45:19,996 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 123 with the following transitions: [2019-09-10 06:45:19,996 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [54], [58], [61], [64], [67], [70], [72], [74], [77], [80], [83], [86], [88], [90], [93], [96], [99], [102], [104], [106], [109], [112], [114], [117], [118], [120], [129], [131], [134], [142], [145], [148], [151], [153], [155], [184], [187], [195], [198], [201], [204], [206], [208], [246], [248], [251], [254], [257], [259], [261], [291], [292], [296], [297], [298] [2019-09-10 06:45:19,998 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 06:45:19,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 06:45:20,005 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 06:45:20,325 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 06:45:20,325 INFO L272 AbstractInterpreter]: Visited 73 different actions 956 times. Merged at 49 different actions 750 times. Widened at 19 different actions 138 times. Performed 3102 root evaluator evaluations with a maximum evaluation depth of 5. Performed 3102 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 122 fixpoints after 20 different actions. Largest state had 99 variables. [2019-09-10 06:45:20,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 06:45:20,326 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 06:45:20,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 06:45:20,326 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 06:45:20,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 06:45:20,336 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 06:45:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 06:45:20,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-10 06:45:20,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 06:45:20,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:20,992 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-09-10 06:45:21,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:21,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:21,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:21,760 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:21,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:22,414 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 06:45:22,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:23,499 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2019-09-10 06:45:25,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 06:45:25,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 06:45:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 06:45:25,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 06:45:25,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 51 [2019-09-10 06:45:25,779 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 06:45:25,779 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-09-10 06:45:25,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-09-10 06:45:25,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2019-09-10 06:45:25,780 INFO L87 Difference]: Start difference. First operand 73929 states and 84762 transitions. Second operand 34 states. [2019-09-10 06:45:26,120 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-10 06:45:27,966 WARN L188 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-10 06:45:28,725 WARN L188 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2019-09-10 06:45:29,460 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 111 [2019-09-10 06:45:30,168 WARN L188 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 102 [2019-09-10 06:45:30,799 WARN L188 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 105 [2019-09-10 06:45:33,977 WARN L188 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 119 [2019-09-10 06:45:37,008 WARN L188 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 141 DAG size of output: 113 [2019-09-10 06:45:37,756 WARN L188 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 105 [2019-09-10 06:45:38,645 WARN L188 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 113 [2019-09-10 06:45:40,235 WARN L188 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 114 [2019-09-10 06:45:41,410 WARN L188 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 122 [2019-09-10 06:45:43,016 WARN L188 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 157 DAG size of output: 117 [2019-09-10 06:45:43,950 WARN L188 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 106 [2019-09-10 06:45:45,108 WARN L188 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 120 [2019-09-10 06:45:46,140 WARN L188 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 110 [2019-09-10 06:45:46,968 WARN L188 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 116 [2019-09-10 06:45:47,695 WARN L188 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 107 [2019-09-10 06:45:48,975 WARN L188 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2019-09-10 06:45:50,312 WARN L188 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 129 [2019-09-10 06:45:51,541 WARN L188 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 123 [2019-09-10 06:45:52,503 WARN L188 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2019-09-10 06:45:53,823 WARN L188 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 125 [2019-09-10 06:45:54,756 WARN L188 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 117 [2019-09-10 06:45:55,338 WARN L188 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2019-09-10 06:45:57,188 WARN L188 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 138 DAG size of output: 110 [2019-09-10 06:46:00,641 WARN L188 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 175 DAG size of output: 131 [2019-09-10 06:46:01,598 WARN L188 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 114 [2019-09-10 06:46:02,488 WARN L188 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 120 [2019-09-10 06:46:04,486 WARN L188 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 107 [2019-09-10 06:46:06,221 WARN L188 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 189 DAG size of output: 143 [2019-09-10 06:46:08,227 WARN L188 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 192 DAG size of output: 146 [2019-09-10 06:46:09,576 WARN L188 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 118 [2019-09-10 06:46:11,682 WARN L188 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 193 DAG size of output: 145 [2019-09-10 06:46:12,554 WARN L188 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 103 [2019-09-10 06:46:13,214 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2019-09-10 06:46:13,932 WARN L188 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2019-09-10 06:46:15,041 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 95 [2019-09-10 06:46:18,256 WARN L188 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 196 DAG size of output: 148 [2019-09-10 06:46:19,889 WARN L188 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 123 DAG size of output: 106 [2019-09-10 06:46:20,290 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-10 06:46:26,066 WARN L188 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 180 DAG size of output: 139 [2019-09-10 06:46:26,558 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:46:32,551 WARN L188 SmtUtils]: Spent 3.35 s on a formula simplification. DAG size of input: 168 DAG size of output: 126 [2019-09-10 06:46:33,213 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2019-09-10 06:46:39,281 WARN L188 SmtUtils]: Spent 3.18 s on a formula simplification. DAG size of input: 156 DAG size of output: 122 [2019-09-10 06:46:40,029 WARN L188 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2019-09-10 06:46:40,486 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-10 06:46:41,205 WARN L188 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 98 [2019-09-10 06:46:42,038 WARN L188 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 99 [2019-09-10 06:46:43,444 WARN L188 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 132 [2019-09-10 06:46:44,262 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-10 06:46:45,865 WARN L188 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 184 DAG size of output: 141 [2019-09-10 06:46:46,435 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 06:46:47,039 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2019-09-10 06:46:47,476 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-10 06:46:49,978 WARN L188 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 190 DAG size of output: 147 [2019-09-10 06:46:50,530 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-10 06:46:52,029 WARN L188 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 132 [2019-09-10 06:46:52,598 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2019-09-10 06:46:57,506 WARN L188 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 134 [2019-09-10 06:46:58,225 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2019-09-10 06:46:59,082 WARN L188 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2019-09-10 06:46:59,678 WARN L188 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2019-09-10 06:47:03,997 WARN L188 SmtUtils]: Spent 3.67 s on a formula simplification. DAG size of input: 195 DAG size of output: 149 [2019-09-10 06:47:04,948 WARN L188 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 116 [2019-09-10 06:47:05,534 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:47:06,044 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 06:47:06,492 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2019-09-10 06:47:07,123 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2019-09-10 06:47:07,541 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2019-09-10 06:47:08,262 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-10 06:47:08,808 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-10 06:47:13,193 WARN L188 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 156 DAG size of output: 134 [2019-09-10 06:47:13,836 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2019-09-10 06:47:14,502 WARN L188 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2019-09-10 06:47:15,261 WARN L188 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 06:47:16,859 WARN L188 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2019-09-10 06:47:17,830 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2019-09-10 06:47:18,497 WARN L188 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2019-09-10 06:47:18,758 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 06:47:19,654 WARN L188 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 102 [2019-09-10 06:47:20,322 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 97 [2019-09-10 06:47:22,188 WARN L188 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 141 [2019-09-10 06:47:26,310 WARN L188 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 183 DAG size of output: 142 [2019-09-10 06:47:26,852 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 06:47:27,123 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 06:47:28,353 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2019-09-10 06:47:28,677 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2019-09-10 06:47:30,397 WARN L188 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2019-09-10 06:47:30,974 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2019-09-10 06:47:31,653 WARN L188 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-09-10 06:47:32,371 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 105 [2019-09-10 06:47:35,546 WARN L188 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2019-09-10 06:47:36,237 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 06:47:36,765 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 06:47:38,269 WARN L188 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 137 [2019-09-10 06:47:40,536 WARN L188 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 159 DAG size of output: 137 [2019-09-10 06:47:41,031 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2019-09-10 06:47:43,701 WARN L188 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2019-09-10 06:47:44,024 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 06:47:44,747 WARN L188 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 108 [2019-09-10 06:47:47,518 WARN L188 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2019-09-10 06:47:49,917 WARN L188 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 199 DAG size of output: 151 [2019-09-10 06:47:50,248 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-10 06:47:53,529 WARN L188 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2019-09-10 06:47:56,498 WARN L188 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 95 [2019-09-10 06:48:00,911 WARN L188 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 159 DAG size of output: 135 [2019-09-10 06:48:08,538 WARN L188 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2019-09-10 06:48:10,905 WARN L188 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2019-09-10 06:48:12,166 WARN L188 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 135 [2019-09-10 06:48:13,848 WARN L188 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 131 [2019-09-10 06:48:17,586 WARN L188 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 156 DAG size of output: 132 [2019-09-10 06:48:19,573 WARN L188 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2019-09-10 06:48:21,158 WARN L188 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 131 [2019-09-10 06:48:22,912 WARN L188 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 156 DAG size of output: 132 [2019-09-10 06:48:25,199 WARN L188 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 177 DAG size of output: 135 [2019-09-10 06:48:32,700 WARN L188 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 128 [2019-09-10 06:48:35,215 WARN L188 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2019-09-10 06:48:41,273 WARN L188 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 150 DAG size of output: 128 [2019-09-10 06:48:42,963 WARN L188 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 135 [2019-09-10 06:48:47,442 WARN L188 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 121 [2019-09-10 06:48:49,193 WARN L188 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2019-09-10 06:48:51,738 WARN L188 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 153 DAG size of output: 135 [2019-09-10 06:48:56,724 WARN L188 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 116 [2019-09-10 06:48:58,412 WARN L188 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 132 [2019-09-10 06:49:01,890 WARN L188 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 149 DAG size of output: 137 [2019-09-10 06:49:04,269 WARN L188 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 118 [2019-09-10 06:49:06,227 WARN L188 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 139 DAG size of output: 116 [2019-09-10 06:49:07,533 WARN L188 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 132 [2019-09-10 06:49:09,384 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 167 DAG size of output: 139 [2019-09-10 06:49:11,035 WARN L188 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 113 [2019-09-10 06:49:13,032 WARN L188 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 155 DAG size of output: 139 [2019-09-10 06:49:14,688 WARN L188 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2019-09-10 06:49:15,896 WARN L188 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 134 [2019-09-10 06:49:17,212 WARN L188 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 134 [2019-09-10 06:49:18,758 WARN L188 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 113 [2019-09-10 06:49:23,134 WARN L188 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 173 DAG size of output: 139 [2019-09-10 06:49:24,569 WARN L188 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 136 [2019-09-10 06:49:26,157 WARN L188 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 152 DAG size of output: 136 [2019-09-10 06:49:28,309 WARN L188 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2019-09-10 06:49:29,860 WARN L188 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 168 DAG size of output: 134 [2019-09-10 06:49:31,330 WARN L188 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 153 DAG size of output: 131 [2019-09-10 06:49:32,876 WARN L188 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 159 DAG size of output: 131 [2019-09-10 06:49:34,407 WARN L188 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 181 DAG size of output: 137 [2019-09-10 06:49:35,245 WARN L188 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2019-09-10 06:49:39,591 WARN L188 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 170 DAG size of output: 136 [2019-09-10 06:49:41,296 WARN L188 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 165 DAG size of output: 131 [2019-09-10 06:49:42,957 WARN L188 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 150 DAG size of output: 128 [2019-09-10 06:49:43,714 WARN L188 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2019-09-10 06:49:44,751 WARN L188 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 114 [2019-09-10 06:49:45,558 WARN L188 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2019-09-10 06:49:46,480 WARN L188 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2019-09-10 06:49:47,842 WARN L188 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 142 [2019-09-10 06:49:48,563 WARN L188 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 101 [2019-09-10 06:49:50,718 WARN L188 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 178 DAG size of output: 134 [2019-09-10 06:49:51,398 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 06:49:51,905 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-10 06:49:53,178 WARN L188 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 139 [2019-09-10 06:49:54,696 WARN L188 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 169 DAG size of output: 144 [2019-09-10 06:49:56,651 WARN L188 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2019-09-10 06:49:58,589 WARN L188 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 160 DAG size of output: 139 [2019-09-10 06:50:00,134 WARN L188 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 182 DAG size of output: 139 [2019-09-10 06:50:00,734 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 06:50:02,394 WARN L188 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 136 [2019-09-10 06:50:05,615 WARN L188 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 123 [2019-09-10 06:50:11,865 WARN L188 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 166 DAG size of output: 141 [2019-09-10 06:50:17,244 WARN L188 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2019-09-10 06:50:23,139 WARN L188 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 179 DAG size of output: 136 [2019-09-10 06:50:23,907 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-09-10 06:50:25,672 WARN L188 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 130 [2019-09-10 06:50:27,407 WARN L188 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 125