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/Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 15:52:07,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 15:52:07,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 15:52:07,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 15:52:07,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 15:52:07,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 15:52:07,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 15:52:07,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 15:52:07,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 15:52:07,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 15:52:07,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 15:52:07,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 15:52:07,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 15:52:07,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 15:52:07,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 15:52:07,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 15:52:07,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 15:52:07,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 15:52:07,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 15:52:07,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 15:52:07,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 15:52:07,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 15:52:07,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 15:52:07,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 15:52:07,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 15:52:07,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 15:52:07,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 15:52:07,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 15:52:07,253 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 15:52:07,279 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 15:52:07,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 15:52:07,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 15:52:07,280 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 15:52:07,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 15:52:07,281 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 15:52:07,281 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 15:52:07,282 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 15:52:07,282 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 15:52:07,282 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 15:52:07,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 15:52:07,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 15:52:07,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 15:52:07,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 15:52:07,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 15:52:07,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 15:52:07,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 15:52:07,286 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 15:52:07,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 15:52:07,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 15:52:07,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 15:52:07,287 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 15:52:07,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 15:52:07,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 15:52:07,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 15:52:07,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 15:52:07,288 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 15:52:07,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 15:52:07,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 15:52:07,288 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 15:52:07,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 15:52:07,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 15:52:07,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 15:52:07,341 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 15:52:07,342 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 15:52:07,342 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2019-09-09 15:52:07,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f3ecdcb/de0e86122d134f6880f57459c2e50341/FLAG8d05ee968 [2019-09-09 15:52:08,196 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 15:52:08,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2019-09-09 15:52:08,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f3ecdcb/de0e86122d134f6880f57459c2e50341/FLAG8d05ee968 [2019-09-09 15:52:08,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f3ecdcb/de0e86122d134f6880f57459c2e50341 [2019-09-09 15:52:08,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 15:52:08,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 15:52:08,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 15:52:08,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 15:52:08,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 15:52:08,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:52:08" (1/1) ... [2019-09-09 15:52:08,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720701ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:08, skipping insertion in model container [2019-09-09 15:52:08,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:52:08" (1/1) ... [2019-09-09 15:52:08,325 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 15:52:08,490 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 15:52:09,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:52:09,781 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 15:52:10,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:52:10,513 INFO L192 MainTranslator]: Completed translation [2019-09-09 15:52:10,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10 WrapperNode [2019-09-09 15:52:10,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 15:52:10,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 15:52:10,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 15:52:10,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 15:52:10,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (1/1) ... [2019-09-09 15:52:10,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (1/1) ... [2019-09-09 15:52:10,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (1/1) ... [2019-09-09 15:52:10,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (1/1) ... [2019-09-09 15:52:10,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (1/1) ... [2019-09-09 15:52:10,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (1/1) ... [2019-09-09 15:52:10,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (1/1) ... [2019-09-09 15:52:10,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 15:52:10,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 15:52:10,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 15:52:10,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 15:52:10,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (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 15:52:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 15:52:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 15:52:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 15:52:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 15:52:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 15:52:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 15:52:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 15:52:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 15:52:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 15:52:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 15:52:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 15:52:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 15:52:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 15:52:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 15:52:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 15:52:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 15:52:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 15:52:15,600 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 15:52:15,601 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 15:52:15,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:52:15 BoogieIcfgContainer [2019-09-09 15:52:15,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 15:52:15,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 15:52:15,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 15:52:15,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 15:52:15,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 03:52:08" (1/3) ... [2019-09-09 15:52:15,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6478c60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:52:15, skipping insertion in model container [2019-09-09 15:52:15,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:52:10" (2/3) ... [2019-09-09 15:52:15,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6478c60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:52:15, skipping insertion in model container [2019-09-09 15:52:15,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:52:15" (3/3) ... [2019-09-09 15:52:15,621 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label00.c [2019-09-09 15:52:15,632 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 15:52:15,643 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 15:52:15,661 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 15:52:15,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 15:52:15,691 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 15:52:15,692 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 15:52:15,692 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 15:52:15,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 15:52:15,692 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 15:52:15,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 15:52:15,692 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 15:52:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-09 15:52:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-09 15:52:15,743 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:15,744 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] [2019-09-09 15:52:15,746 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1784275510, now seen corresponding path program 1 times [2019-09-09 15:52:15,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:15,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:15,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:15,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:15,798 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:15,989 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 15:52:15,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:15,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 15:52:15,992 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:15,998 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 15:52:16,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 15:52:16,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 15:52:16,098 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-09 15:52:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:21,819 INFO L93 Difference]: Finished difference Result 1610 states and 2915 transitions. [2019-09-09 15:52:21,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 15:52:21,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-09-09 15:52:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:21,869 INFO L225 Difference]: With dead ends: 1610 [2019-09-09 15:52:21,870 INFO L226 Difference]: Without dead ends: 1542 [2019-09-09 15:52:21,873 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 15:52:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-09 15:52:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-09 15:52:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-09 15:52:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2822 transitions. [2019-09-09 15:52:22,035 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2822 transitions. Word has length 21 [2019-09-09 15:52:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:22,036 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2822 transitions. [2019-09-09 15:52:22,036 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 15:52:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2822 transitions. [2019-09-09 15:52:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-09 15:52:22,040 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:22,041 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 15:52:22,041 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:22,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1422746561, now seen corresponding path program 1 times [2019-09-09 15:52:22,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:22,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:22,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:22,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:22,044 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:22,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:22,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 15:52:22,293 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:22,296 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 15:52:22,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 15:52:22,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 15:52:22,298 INFO L87 Difference]: Start difference. First operand 1542 states and 2822 transitions. Second operand 5 states. [2019-09-09 15:52:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:29,302 INFO L93 Difference]: Finished difference Result 2376 states and 4006 transitions. [2019-09-09 15:52:29,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:52:29,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2019-09-09 15:52:29,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:29,319 INFO L225 Difference]: With dead ends: 2376 [2019-09-09 15:52:29,320 INFO L226 Difference]: Without dead ends: 2376 [2019-09-09 15:52:29,321 INFO L628 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 [2019-09-09 15:52:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-09-09 15:52:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2350. [2019-09-09 15:52:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-09-09 15:52:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3968 transitions. [2019-09-09 15:52:29,393 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3968 transitions. Word has length 94 [2019-09-09 15:52:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:29,395 INFO L475 AbstractCegarLoop]: Abstraction has 2350 states and 3968 transitions. [2019-09-09 15:52:29,395 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 15:52:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3968 transitions. [2019-09-09 15:52:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-09 15:52:29,407 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:29,407 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 15:52:29,408 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:29,408 INFO L82 PathProgramCache]: Analyzing trace with hash 547210915, now seen corresponding path program 1 times [2019-09-09 15:52:29,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:29,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:29,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:29,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:29,411 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:29,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:29,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:52:29,582 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:29,582 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:52:29,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:52:29,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:52:29,584 INFO L87 Difference]: Start difference. First operand 2350 states and 3968 transitions. Second operand 4 states. [2019-09-09 15:52:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:37,513 INFO L93 Difference]: Finished difference Result 7016 states and 11462 transitions. [2019-09-09 15:52:37,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:52:37,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-09-09 15:52:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:37,558 INFO L225 Difference]: With dead ends: 7016 [2019-09-09 15:52:37,558 INFO L226 Difference]: Without dead ends: 7016 [2019-09-09 15:52:37,559 INFO L628 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 [2019-09-09 15:52:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2019-09-09 15:52:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 7016. [2019-09-09 15:52:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2019-09-09 15:52:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 11462 transitions. [2019-09-09 15:52:37,741 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 11462 transitions. Word has length 96 [2019-09-09 15:52:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:37,742 INFO L475 AbstractCegarLoop]: Abstraction has 7016 states and 11462 transitions. [2019-09-09 15:52:37,742 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:52:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 11462 transitions. [2019-09-09 15:52:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-09 15:52:37,745 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:37,746 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 15:52:37,746 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:37,746 INFO L82 PathProgramCache]: Analyzing trace with hash 452256594, now seen corresponding path program 1 times [2019-09-09 15:52:37,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:37,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:37,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:37,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:37,748 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:52:38,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:52:38,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:52:38,018 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:52:38,020 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:52:38,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:52:38,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:52:38,021 INFO L87 Difference]: Start difference. First operand 7016 states and 11462 transitions. Second operand 6 states. [2019-09-09 15:52:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:52:44,917 INFO L93 Difference]: Finished difference Result 14332 states and 23347 transitions. [2019-09-09 15:52:44,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:52:44,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2019-09-09 15:52:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:52:45,003 INFO L225 Difference]: With dead ends: 14332 [2019-09-09 15:52:45,004 INFO L226 Difference]: Without dead ends: 14332 [2019-09-09 15:52:45,004 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 15:52:45,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14332 states. [2019-09-09 15:52:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 14236. [2019-09-09 15:52:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14236 states. [2019-09-09 15:52:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14236 states to 14236 states and 22812 transitions. [2019-09-09 15:52:45,407 INFO L78 Accepts]: Start accepts. Automaton has 14236 states and 22812 transitions. Word has length 123 [2019-09-09 15:52:45,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:52:45,410 INFO L475 AbstractCegarLoop]: Abstraction has 14236 states and 22812 transitions. [2019-09-09 15:52:45,410 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:52:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14236 states and 22812 transitions. [2019-09-09 15:52:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-09-09 15:52:45,423 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:52:45,425 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-09 15:52:45,425 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:52:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:52:45,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1552348358, now seen corresponding path program 1 times [2019-09-09 15:52:45,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:52:45,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:45,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:52:45,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:52:45,428 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:52:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:52:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 31 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-09 15:52:45,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 15:52:45,899 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 15:52:45,900 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2019-09-09 15:52:45,903 INFO L207 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1943], [1945], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3253], [3257], [3259], [3270], [3271], [3272], [3274], [3275] [2019-09-09 15:52:45,970 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 15:52:45,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 15:53:41,203 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 15:53:41,206 INFO L272 AbstractInterpreter]: Visited 155 different actions 305 times. Merged at 4 different actions 5 times. Never widened. Performed 601 root evaluator evaluations with a maximum evaluation depth of 16. Performed 601 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2019-09-09 15:53:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:53:41,211 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 15:53:57,952 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 74.99% of their original sizes. [2019-09-09 15:53:57,953 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 15:53:58,065 INFO L420 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2019-09-09 15:53:58,065 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 15:53:58,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 15:53:58,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2019-09-09 15:53:58,067 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:53:58,068 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-09 15:53:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-09 15:53:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-09 15:53:58,069 INFO L87 Difference]: Start difference. First operand 14236 states and 22812 transitions. Second operand 13 states. [2019-09-09 15:55:04,309 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.