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/eca-rers2012/Problem19_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:34:28,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:34:28,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:34:28,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 23:34:28,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:34:28,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:34:28,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:34:28,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:34:28,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:34:28,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:34:28,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:34:28,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:34:28,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:34:28,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:34:28,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:34:28,861 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 [2019-09-09 23:34:28,875 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:34:28,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:34:28,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:34:28,876 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:34:28,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:34:28,877 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:34:28,877 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:34:28,878 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:34:28,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:34:28,878 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:34:28,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:34:28,881 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:34:28,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:34:28,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:34:28,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:34:28,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:34:28,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:34:28,882 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:34:28,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:34:28,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:34:28,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:34:28,883 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:34:28,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:34:28,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:34:28,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:34:28,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:34:28,884 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:34:28,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:34:28,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:34:28,885 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:34:28,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:34:28,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:34:28,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:34:28,962 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:34:28,962 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:34:28,963 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44.c [2019-09-09 23:34:29,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326c19ece/eb8e19f3a01c4768bbcbee90b0a6959b/FLAG41bdc9f83 [2019-09-09 23:34:29,978 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:34:29,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label44.c [2019-09-09 23:34:30,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326c19ece/eb8e19f3a01c4768bbcbee90b0a6959b/FLAG41bdc9f83 [2019-09-09 23:34:30,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326c19ece/eb8e19f3a01c4768bbcbee90b0a6959b [2019-09-09 23:34:30,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:34:30,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:34:30,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:34:30,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:34:30,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:34:30,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:34:30" (1/1) ... [2019-09-09 23:34:30,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc50eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:30, skipping insertion in model container [2019-09-09 23:34:30,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:34:30" (1/1) ... [2019-09-09 23:34:30,385 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:34:30,643 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:34:32,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:34:32,953 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:34:34,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:34:34,296 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:34:34,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34 WrapperNode [2019-09-09 23:34:34,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:34:34,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:34:34,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:34:34,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:34:34,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (1/1) ... [2019-09-09 23:34:34,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (1/1) ... [2019-09-09 23:34:34,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (1/1) ... [2019-09-09 23:34:34,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (1/1) ... [2019-09-09 23:34:34,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (1/1) ... [2019-09-09 23:34:34,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (1/1) ... [2019-09-09 23:34:34,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (1/1) ... [2019-09-09 23:34:34,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:34:34,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:34:34,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:34:34,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:34:34,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (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 [2019-09-09 23:34:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:34:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:34:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:34:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:34:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:34:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:34:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:34:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:34:34,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:34:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:34:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:34:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:34:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:34:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:34:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:34:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:34:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:34:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:34:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:34:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:34:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:34:45,604 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:34:45,605 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:34:45,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:34:45 BoogieIcfgContainer [2019-09-09 23:34:45,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:34:45,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:34:45,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:34:45,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:34:45,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:34:30" (1/3) ... [2019-09-09 23:34:45,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77aaea3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:34:45, skipping insertion in model container [2019-09-09 23:34:45,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:34:34" (2/3) ... [2019-09-09 23:34:45,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77aaea3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:34:45, skipping insertion in model container [2019-09-09 23:34:45,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:34:45" (3/3) ... [2019-09-09 23:34:45,617 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label44.c [2019-09-09 23:34:45,631 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:34:45,651 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:34:45,674 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:34:45,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:34:45,719 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:34:45,719 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:34:45,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:34:45,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:34:45,720 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:34:45,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:34:45,721 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:34:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:34:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-09 23:34:45,817 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:34:45,818 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:34:45,822 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:34:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:34:45,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1535599542, now seen corresponding path program 1 times [2019-09-09 23:34:45,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:34:45,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:34:45,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:34:45,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:34:45,909 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:34:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:34:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:34:46,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:34:46,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 23:34:46,267 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:34:46,273 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 23:34:46,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 23:34:46,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:34:46,292 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-09 23:34:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:34:57,417 INFO L93 Difference]: Finished difference Result 3224 states and 5806 transitions. [2019-09-09 23:34:57,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 23:34:57,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-09-09 23:34:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:34:57,468 INFO L225 Difference]: With dead ends: 3224 [2019-09-09 23:34:57,468 INFO L226 Difference]: Without dead ends: 3156 [2019-09-09 23:34:57,471 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:34:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2019-09-09 23:34:57,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3153. [2019-09-09 23:34:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-09 23:34:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5691 transitions. [2019-09-09 23:34:57,680 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5691 transitions. Word has length 40 [2019-09-09 23:34:57,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:34:57,681 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5691 transitions. [2019-09-09 23:34:57,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 23:34:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5691 transitions. [2019-09-09 23:34:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-09 23:34:57,686 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:34:57,687 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:34:57,687 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:34:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:34:57,688 INFO L82 PathProgramCache]: Analyzing trace with hash 220681975, now seen corresponding path program 1 times [2019-09-09 23:34:57,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:34:57,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:34:57,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:34:57,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:34:57,690 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:34:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:34:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:34:57,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:34:57,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:34:57,889 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:34:57,891 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:34:57,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:34:57,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:34:57,892 INFO L87 Difference]: Start difference. First operand 3153 states and 5691 transitions. Second operand 6 states. [2019-09-09 23:35:13,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:35:13,252 INFO L93 Difference]: Finished difference Result 4698 states and 7866 transitions. [2019-09-09 23:35:13,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:35:13,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-09-09 23:35:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:35:13,290 INFO L225 Difference]: With dead ends: 4698 [2019-09-09 23:35:13,291 INFO L226 Difference]: Without dead ends: 4698 [2019-09-09 23:35:13,292 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:35:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2019-09-09 23:35:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4645. [2019-09-09 23:35:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4645 states. [2019-09-09 23:35:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 7795 transitions. [2019-09-09 23:35:13,418 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 7795 transitions. Word has length 111 [2019-09-09 23:35:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:35:13,420 INFO L475 AbstractCegarLoop]: Abstraction has 4645 states and 7795 transitions. [2019-09-09 23:35:13,420 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:35:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 7795 transitions. [2019-09-09 23:35:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-09 23:35:13,429 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:35:13,430 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:35:13,431 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:35:13,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:35:13,431 INFO L82 PathProgramCache]: Analyzing trace with hash -206565556, now seen corresponding path program 1 times [2019-09-09 23:35:13,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:35:13,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:35:13,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:35:13,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:35:13,433 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:35:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:35:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:35:13,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:35:13,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:35:13,639 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:35:13,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:35:13,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:35:13,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:35:13,641 INFO L87 Difference]: Start difference. First operand 4645 states and 7795 transitions. Second operand 6 states. [2019-09-09 23:35:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:35:28,996 INFO L93 Difference]: Finished difference Result 9315 states and 15687 transitions. [2019-09-09 23:35:29,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:35:29,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2019-09-09 23:35:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:35:29,117 INFO L225 Difference]: With dead ends: 9315 [2019-09-09 23:35:29,117 INFO L226 Difference]: Without dead ends: 9315 [2019-09-09 23:35:29,118 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:35:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9315 states. [2019-09-09 23:35:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9315 to 9121. [2019-09-09 23:35:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9121 states. [2019-09-09 23:35:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9121 states to 9121 states and 15294 transitions. [2019-09-09 23:35:29,395 INFO L78 Accepts]: Start accepts. Automaton has 9121 states and 15294 transitions. Word has length 113 [2019-09-09 23:35:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:35:29,398 INFO L475 AbstractCegarLoop]: Abstraction has 9121 states and 15294 transitions. [2019-09-09 23:35:29,398 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:35:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 9121 states and 15294 transitions. [2019-09-09 23:35:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-09 23:35:29,406 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:35:29,407 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:35:29,407 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:35:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:35:29,409 INFO L82 PathProgramCache]: Analyzing trace with hash 906135111, now seen corresponding path program 1 times [2019-09-09 23:35:29,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:35:29,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:35:29,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:35:29,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:35:29,411 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:35:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:35:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:35:29,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:35:29,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:35:29,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:35:29,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:35:29,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:35:29,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:35:29,626 INFO L87 Difference]: Start difference. First operand 9121 states and 15294 transitions. Second operand 5 states. [2019-09-09 23:35:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:35:44,937 INFO L93 Difference]: Finished difference Result 18825 states and 28446 transitions. [2019-09-09 23:35:44,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:35:44,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-09-09 23:35:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:35:45,012 INFO L225 Difference]: With dead ends: 18825 [2019-09-09 23:35:45,012 INFO L226 Difference]: Without dead ends: 18825 [2019-09-09 23:35:45,012 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 23:35:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18825 states. [2019-09-09 23:35:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18825 to 18461. [2019-09-09 23:35:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18461 states. [2019-09-09 23:35:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18461 states to 18461 states and 27586 transitions. [2019-09-09 23:35:45,425 INFO L78 Accepts]: Start accepts. Automaton has 18461 states and 27586 transitions. Word has length 144 [2019-09-09 23:35:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:35:45,426 INFO L475 AbstractCegarLoop]: Abstraction has 18461 states and 27586 transitions. [2019-09-09 23:35:45,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:35:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 18461 states and 27586 transitions. [2019-09-09 23:35:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-09-09 23:35:45,440 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:35:45,440 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:35:45,441 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:35:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:35:45,441 INFO L82 PathProgramCache]: Analyzing trace with hash -517585330, now seen corresponding path program 1 times [2019-09-09 23:35:45,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:35:45,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:35:45,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:35:45,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:35:45,443 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:35:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:35:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 66 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 23:35:45,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:35:45,618 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:35:45,619 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2019-09-09 23:35:45,621 INFO L207 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5454], [5456], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6815], [6819], [6821], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:35:45,699 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:35:45,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:35:54,664 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:35:54,666 INFO L272 AbstractInterpreter]: Visited 103 different actions 103 times. Never merged. Never widened. Performed 250 root evaluator evaluations with a maximum evaluation depth of 14. Performed 250 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:35:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:35:54,670 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:36:01,255 INFO L227 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 75.63% of their original sizes. [2019-09-09 23:36:01,255 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:36:01,324 INFO L420 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2019-09-09 23:36:01,325 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:36:01,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:36:01,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 23:36:01,326 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:36:01,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 23:36:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 23:36:01,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:36:01,327 INFO L87 Difference]: Start difference. First operand 18461 states and 27586 transitions. Second operand 10 states. [2019-09-09 23:39:20,418 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.