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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:31:11,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:31:11,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:31:11,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 23:31:11,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:31:11,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:31:11,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:31:11,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:31:11,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:31:11,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:31:11,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:31:11,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:31:11,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:31:11,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:31:11,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:31:11,343 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 23:31:11,359 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:31:11,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:31:11,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:31:11,360 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:31:11,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:31:11,361 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:31:11,361 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:31:11,361 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:31:11,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:31:11,362 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:31:11,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:31:11,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:31:11,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:31:11,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:31:11,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:31:11,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:31:11,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:31:11,364 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:31:11,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:31:11,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:31:11,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:31:11,365 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:31:11,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:31:11,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:31:11,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:31:11,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:31:11,366 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:31:11,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:31:11,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:31:11,366 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:31:11,395 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:31:11,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:31:11,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:31:11,414 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:31:11,414 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:31:11,415 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label38.c [2019-09-09 23:31:11,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0b70eed/e09e8ca1d238427ca65887d3934e6b32/FLAG97fb17a92 [2019-09-09 23:31:12,465 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:31:12,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label38.c [2019-09-09 23:31:12,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0b70eed/e09e8ca1d238427ca65887d3934e6b32/FLAG97fb17a92 [2019-09-09 23:31:12,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0b70eed/e09e8ca1d238427ca65887d3934e6b32 [2019-09-09 23:31:12,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:31:12,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:31:12,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:31:12,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:31:12,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:31:12,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:31:12" (1/1) ... [2019-09-09 23:31:12,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fbd674b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:12, skipping insertion in model container [2019-09-09 23:31:12,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:31:12" (1/1) ... [2019-09-09 23:31:12,839 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:31:13,121 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:31:15,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:31:15,573 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:31:16,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:31:16,703 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:31:16,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16 WrapperNode [2019-09-09 23:31:16,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:31:16,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:31:16,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:31:16,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:31:16,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... [2019-09-09 23:31:16,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... [2019-09-09 23:31:16,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... [2019-09-09 23:31:16,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... [2019-09-09 23:31:16,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... [2019-09-09 23:31:17,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... [2019-09-09 23:31:17,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... [2019-09-09 23:31:17,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:31:17,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:31:17,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:31:17,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:31:17,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:31:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:31:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:31:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:31:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:31:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:31:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:31:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:31:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:31:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:31:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:31:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:31:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:31:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:31:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:31:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:31:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:31:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:31:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:31:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:31:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:31:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:31:29,251 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:31:29,251 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:31:29,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:31:29 BoogieIcfgContainer [2019-09-09 23:31:29,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:31:29,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:31:29,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:31:29,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:31:29,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:31:12" (1/3) ... [2019-09-09 23:31:29,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2ef4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:31:29, skipping insertion in model container [2019-09-09 23:31:29,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:31:16" (2/3) ... [2019-09-09 23:31:29,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2ef4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:31:29, skipping insertion in model container [2019-09-09 23:31:29,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:31:29" (3/3) ... [2019-09-09 23:31:29,270 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label38.c [2019-09-09 23:31:29,282 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:31:29,290 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:31:29,306 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:31:29,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:31:29,334 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:31:29,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:31:29,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:31:29,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:31:29,335 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:31:29,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:31:29,335 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:31:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:31:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-09 23:31:29,395 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:31:29,397 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:31:29,399 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:31:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:31:29,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1148667028, now seen corresponding path program 1 times [2019-09-09 23:31:29,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:31:29,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:31:29,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:31:29,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:31:29,452 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:31:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:31:29,810 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 23:31:29,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:31:29,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 23:31:29,813 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:31:29,819 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 23:31:29,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 23:31:29,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:31:29,837 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-09 23:31:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:31:45,698 INFO L93 Difference]: Finished difference Result 3225 states and 5799 transitions. [2019-09-09 23:31:45,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 23:31:45,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-09 23:31:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:31:45,749 INFO L225 Difference]: With dead ends: 3225 [2019-09-09 23:31:45,749 INFO L226 Difference]: Without dead ends: 3157 [2019-09-09 23:31:45,751 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:31:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2019-09-09 23:31:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3153. [2019-09-09 23:31:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-09 23:31:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5682 transitions. [2019-09-09 23:31:45,926 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5682 transitions. Word has length 65 [2019-09-09 23:31:45,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:31:45,929 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5682 transitions. [2019-09-09 23:31:45,929 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 23:31:45,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5682 transitions. [2019-09-09 23:31:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-09 23:31:45,943 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:31:45,944 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, 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] [2019-09-09 23:31:45,944 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:31:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:31:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -33396098, now seen corresponding path program 1 times [2019-09-09 23:31:45,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:31:45,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:31:45,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:31:45,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:31:45,948 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:31:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:31:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:31:46,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:31:46,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:31:46,212 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:31:46,214 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:31:46,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:31:46,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:31:46,215 INFO L87 Difference]: Start difference. First operand 3153 states and 5682 transitions. Second operand 6 states. [2019-09-09 23:32:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:32:05,704 INFO L93 Difference]: Finished difference Result 6092 states and 10596 transitions. [2019-09-09 23:32:05,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:32:05,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-09-09 23:32:05,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:32:05,739 INFO L225 Difference]: With dead ends: 6092 [2019-09-09 23:32:05,739 INFO L226 Difference]: Without dead ends: 6092 [2019-09-09 23:32:05,740 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 23:32:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6092 states. [2019-09-09 23:32:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6092 to 6058. [2019-09-09 23:32:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6058 states. [2019-09-09 23:32:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 10538 transitions. [2019-09-09 23:32:05,931 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 10538 transitions. Word has length 136 [2019-09-09 23:32:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:32:05,935 INFO L475 AbstractCegarLoop]: Abstraction has 6058 states and 10538 transitions. [2019-09-09 23:32:05,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:32:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 10538 transitions. [2019-09-09 23:32:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-09-09 23:32:05,940 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:32:05,940 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, 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] [2019-09-09 23:32:05,941 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:32:05,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:32:05,942 INFO L82 PathProgramCache]: Analyzing trace with hash -260459136, now seen corresponding path program 1 times [2019-09-09 23:32:05,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:32:05,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:32:05,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:32:05,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:32:05,944 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:32:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:32:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:32:06,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:32:06,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:32:06,220 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:32:06,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:32:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:32:06,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:32:06,222 INFO L87 Difference]: Start difference. First operand 6058 states and 10538 transitions. Second operand 6 states. [2019-09-09 23:32:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:32:35,982 INFO L93 Difference]: Finished difference Result 15408 states and 24133 transitions. [2019-09-09 23:32:35,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 23:32:35,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2019-09-09 23:32:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:32:36,096 INFO L225 Difference]: With dead ends: 15408 [2019-09-09 23:32:36,097 INFO L226 Difference]: Without dead ends: 15408 [2019-09-09 23:32:36,097 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:32:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15408 states. [2019-09-09 23:32:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15408 to 15321. [2019-09-09 23:32:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15321 states. [2019-09-09 23:32:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15321 states to 15321 states and 23610 transitions. [2019-09-09 23:32:36,661 INFO L78 Accepts]: Start accepts. Automaton has 15321 states and 23610 transitions. Word has length 154 [2019-09-09 23:32:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:32:36,663 INFO L475 AbstractCegarLoop]: Abstraction has 15321 states and 23610 transitions. [2019-09-09 23:32:36,663 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:32:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 15321 states and 23610 transitions. [2019-09-09 23:32:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-09-09 23:32:36,668 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:32:36,669 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, 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, 1, 1, 1, 1, 1] [2019-09-09 23:32:36,670 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:32:36,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:32:36,671 INFO L82 PathProgramCache]: Analyzing trace with hash 717442897, now seen corresponding path program 1 times [2019-09-09 23:32:36,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:32:36,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:32:36,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:32:36,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:32:36,673 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:32:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:32:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:32:36,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:32:36,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:32:36,879 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:32:36,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:32:36,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:32:36,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:32:36,880 INFO L87 Difference]: Start difference. First operand 15321 states and 23610 transitions. Second operand 5 states. [2019-09-09 23:32:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:32:54,604 INFO L93 Difference]: Finished difference Result 31177 states and 45343 transitions. [2019-09-09 23:32:54,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:32:54,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2019-09-09 23:32:54,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:32:54,749 INFO L225 Difference]: With dead ends: 31177 [2019-09-09 23:32:54,750 INFO L226 Difference]: Without dead ends: 31177 [2019-09-09 23:32:54,751 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 23:32:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31177 states. [2019-09-09 23:32:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31177 to 30109. [2019-09-09 23:32:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30109 states. [2019-09-09 23:32:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30109 states to 30109 states and 42565 transitions. [2019-09-09 23:32:55,751 INFO L78 Accepts]: Start accepts. Automaton has 30109 states and 42565 transitions. Word has length 199 [2019-09-09 23:32:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:32:55,753 INFO L475 AbstractCegarLoop]: Abstraction has 30109 states and 42565 transitions. [2019-09-09 23:32:55,753 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:32:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 30109 states and 42565 transitions. [2019-09-09 23:32:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-09-09 23:32:55,761 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:32:55,761 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:32:55,762 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:32:55,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:32:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash -254773066, now seen corresponding path program 1 times [2019-09-09 23:32:55,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:32:55,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:32:55,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:32:55,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:32:55,766 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:32:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:32:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 116 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 23:32:55,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:32:55,950 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:32:55,951 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2019-09-09 23:32:55,954 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], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5654], [5656], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6815], [6819], [6821], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:32:56,046 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:32:56,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:33:01,153 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:33:01,155 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Performed 216 root evaluator evaluations with a maximum evaluation depth of 13. Performed 216 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:33:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:33:01,160 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:33:05,181 INFO L227 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 76.11% of their original sizes. [2019-09-09 23:33:05,181 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:33:05,254 INFO L420 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2019-09-09 23:33:05,254 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:33:05,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:33:05,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 23:33:05,255 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:33:05,256 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 23:33:05,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 23:33:05,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:33:05,257 INFO L87 Difference]: Start difference. First operand 30109 states and 42565 transitions. Second operand 10 states. [2019-09-09 23:36:28,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.