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/Problem18_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:12:57,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:12:57,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:12:57,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 22:12:57,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:12:57,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:12:57,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:12:57,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:12:57,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:12:57,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:12:57,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:12:57,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:12:57,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:12:57,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:12:57,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:12:57,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:12:57,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 22:12:57,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:12:57,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:12:57,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:12:57,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 22:12:57,799 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:12:57,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:12:57,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:12:57,800 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:12:57,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:12:57,801 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:12:57,801 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:12:57,801 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:12:57,801 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:12:57,802 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:12:57,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:12:57,802 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:12:57,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:12:57,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:12:57,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:12:57,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:12:57,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:12:57,803 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:12:57,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:12:57,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:12:57,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:12:57,804 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:12:57,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:12:57,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:12:57,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:12:57,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:12:57,805 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:12:57,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:12:57,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:12:57,806 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:12:57,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:12:57,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:12:57,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:12:57,849 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:12:57,850 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:12:57,850 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-10-02 22:12:57,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4ce93bf/e9c53bd6d3274c8fb59b5f5845cf1b0f/FLAG6214fe42b [2019-10-02 22:12:58,574 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:12:58,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-10-02 22:12:58,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4ce93bf/e9c53bd6d3274c8fb59b5f5845cf1b0f/FLAG6214fe42b [2019-10-02 22:12:58,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4ce93bf/e9c53bd6d3274c8fb59b5f5845cf1b0f [2019-10-02 22:12:58,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:12:58,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:12:58,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:12:58,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:12:58,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:12:58,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:12:58" (1/1) ... [2019-10-02 22:12:58,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf90c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:12:58, skipping insertion in model container [2019-10-02 22:12:58,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:12:58" (1/1) ... [2019-10-02 22:12:58,783 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:12:58,927 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:13:00,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:13:00,029 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:13:00,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:13:00,619 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:13:00,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00 WrapperNode [2019-10-02 22:13:00,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:13:00,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:13:00,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:13:00,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:13:00,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... [2019-10-02 22:13:00,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... [2019-10-02 22:13:00,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... [2019-10-02 22:13:00,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... [2019-10-02 22:13:00,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... [2019-10-02 22:13:00,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... [2019-10-02 22:13:00,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... [2019-10-02 22:13:00,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:13:00,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:13:00,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:13:00,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:13:00,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:13:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:13:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:13:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 22:13:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 22:13:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 22:13:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:13:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 22:13:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 22:13:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 22:13:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:13:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:13:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:13:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:13:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:13:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:13:04,770 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:13:04,770 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 22:13:04,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:13:04 BoogieIcfgContainer [2019-10-02 22:13:04,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:13:04,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:13:04,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:13:04,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:13:04,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:12:58" (1/3) ... [2019-10-02 22:13:04,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f9d89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:13:04, skipping insertion in model container [2019-10-02 22:13:04,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:00" (2/3) ... [2019-10-02 22:13:04,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f9d89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:13:04, skipping insertion in model container [2019-10-02 22:13:04,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:13:04" (3/3) ... [2019-10-02 22:13:04,783 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label51.c [2019-10-02 22:13:04,794 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:13:04,806 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 22:13:04,824 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 22:13:04,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:13:04,859 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:13:04,859 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:13:04,859 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:13:04,859 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:13:04,860 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:13:04,860 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:13:04,860 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:13:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-02 22:13:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-02 22:13:04,921 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:04,922 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:13:04,925 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:04,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:04,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1085163511, now seen corresponding path program 1 times [2019-10-02 22:13:04,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:04,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:04,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:04,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:04,984 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:13:05,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:05,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:13:05,349 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:05,355 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:13:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:13:05,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:13:05,373 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-10-02 22:13:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:12,803 INFO L93 Difference]: Finished difference Result 2202 states and 3439 transitions. [2019-10-02 22:13:12,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:13:12,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2019-10-02 22:13:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:12,846 INFO L225 Difference]: With dead ends: 2202 [2019-10-02 22:13:12,847 INFO L226 Difference]: Without dead ends: 2114 [2019-10-02 22:13:12,848 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:13:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-10-02 22:13:12,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-10-02 22:13:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-10-02 22:13:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3320 transitions. [2019-10-02 22:13:13,005 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3320 transitions. Word has length 66 [2019-10-02 22:13:13,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:13,006 INFO L475 AbstractCegarLoop]: Abstraction has 2114 states and 3320 transitions. [2019-10-02 22:13:13,006 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:13:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3320 transitions. [2019-10-02 22:13:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-02 22:13:13,013 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:13,014 INFO L411 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, 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] [2019-10-02 22:13:13,014 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash 340179813, now seen corresponding path program 1 times [2019-10-02 22:13:13,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:13,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:13,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:13,017 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:13:13,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:13,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:13:13,169 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:13,171 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:13:13,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:13:13,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:13:13,172 INFO L87 Difference]: Start difference. First operand 2114 states and 3320 transitions. Second operand 5 states. [2019-10-02 22:13:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:19,077 INFO L93 Difference]: Finished difference Result 4328 states and 6510 transitions. [2019-10-02 22:13:19,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:13:19,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-10-02 22:13:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:19,106 INFO L225 Difference]: With dead ends: 4328 [2019-10-02 22:13:19,106 INFO L226 Difference]: Without dead ends: 4328 [2019-10-02 22:13:19,107 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 22:13:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-10-02 22:13:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-10-02 22:13:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-10-02 22:13:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6416 transitions. [2019-10-02 22:13:19,216 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6416 transitions. Word has length 135 [2019-10-02 22:13:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:19,217 INFO L475 AbstractCegarLoop]: Abstraction has 4296 states and 6416 transitions. [2019-10-02 22:13:19,217 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:13:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6416 transitions. [2019-10-02 22:13:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-02 22:13:19,221 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:19,221 INFO L411 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, 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] [2019-10-02 22:13:19,221 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:19,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1733405200, now seen corresponding path program 1 times [2019-10-02 22:13:19,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:19,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:19,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:19,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:19,224 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:13:19,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:19,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 22:13:19,383 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:19,383 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:13:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:13:19,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:13:19,384 INFO L87 Difference]: Start difference. First operand 4296 states and 6416 transitions. Second operand 6 states. [2019-10-02 22:13:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:25,093 INFO L93 Difference]: Finished difference Result 8811 states and 13351 transitions. [2019-10-02 22:13:25,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:13:25,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2019-10-02 22:13:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:25,149 INFO L225 Difference]: With dead ends: 8811 [2019-10-02 22:13:25,150 INFO L226 Difference]: Without dead ends: 8811 [2019-10-02 22:13:25,150 INFO L640 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 [2019-10-02 22:13:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8811 states. [2019-10-02 22:13:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8811 to 8751. [2019-10-02 22:13:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8751 states. [2019-10-02 22:13:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8751 states to 8751 states and 13061 transitions. [2019-10-02 22:13:25,441 INFO L78 Accepts]: Start accepts. Automaton has 8751 states and 13061 transitions. Word has length 162 [2019-10-02 22:13:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:25,442 INFO L475 AbstractCegarLoop]: Abstraction has 8751 states and 13061 transitions. [2019-10-02 22:13:25,442 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:13:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8751 states and 13061 transitions. [2019-10-02 22:13:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-02 22:13:25,447 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:25,448 INFO L411 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, 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] [2019-10-02 22:13:25,448 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash -762986116, now seen corresponding path program 1 times [2019-10-02 22:13:25,449 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:25,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:25,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:25,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:25,457 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:13:25,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:25,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:13:25,720 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:25,721 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:13:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:13:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:13:25,721 INFO L87 Difference]: Start difference. First operand 8751 states and 13061 transitions. Second operand 4 states. [2019-10-02 22:13:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:32,004 INFO L93 Difference]: Finished difference Result 13008 states and 17080 transitions. [2019-10-02 22:13:32,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:13:32,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-02 22:13:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:32,068 INFO L225 Difference]: With dead ends: 13008 [2019-10-02 22:13:32,068 INFO L226 Difference]: Without dead ends: 13008 [2019-10-02 22:13:32,068 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:13:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13008 states. [2019-10-02 22:13:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13008 to 13008. [2019-10-02 22:13:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13008 states. [2019-10-02 22:13:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13008 states to 13008 states and 17080 transitions. [2019-10-02 22:13:32,324 INFO L78 Accepts]: Start accepts. Automaton has 13008 states and 17080 transitions. Word has length 172 [2019-10-02 22:13:32,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:32,326 INFO L475 AbstractCegarLoop]: Abstraction has 13008 states and 17080 transitions. [2019-10-02 22:13:32,326 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:13:32,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13008 states and 17080 transitions. [2019-10-02 22:13:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-02 22:13:32,331 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:32,331 INFO L411 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:13:32,332 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:32,332 INFO L82 PathProgramCache]: Analyzing trace with hash -929813213, now seen corresponding path program 1 times [2019-10-02 22:13:32,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:32,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:32,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:32,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:32,333 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 118 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 22:13:32,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:13:32,555 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:13:32,556 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2019-10-02 22:13:32,558 INFO L207 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2059], [2061], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-10-02 22:13:32,604 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:13:32,604 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:13:37,112 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:13:37,114 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Performed 237 root evaluator evaluations with a maximum evaluation depth of 13. Performed 237 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 22:13:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:37,118 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:13:41,521 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.41% of their original sizes. [2019-10-02 22:13:41,521 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:13:41,579 INFO L420 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2019-10-02 22:13:41,580 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:13:41,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:13:41,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-10-02 22:13:41,581 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:41,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 22:13:41,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 22:13:41,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 22:13:41,586 INFO L87 Difference]: Start difference. First operand 13008 states and 17080 transitions. Second operand 10 states. [2019-10-02 22:15:25,023 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.