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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:13:16,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:13:16,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:13:16,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 22:13:16,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:13:16,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:13:16,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:13:16,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:13:16,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:13:16,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:13:16,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:13:16,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:13:16,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:13:16,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:13:16,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:13:16,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:13:16,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 22:13:16,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:13:16,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:13:16,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:13:16,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:13:16,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:13:16,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:13:16,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:13:16,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:13:16,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:13:16,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:13:16,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:13:16,566 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 22:13:16,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:13:16,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:13:16,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:13:16,585 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:13:16,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:13:16,585 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:13:16,586 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:13:16,586 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:13:16,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:13:16,586 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:13:16,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:13:16,587 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:13:16,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:13:16,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:13:16,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:13:16,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:13:16,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:13:16,588 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:13:16,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:13:16,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:13:16,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:13:16,589 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:13:16,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:13:16,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:13:16,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:13:16,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:13:16,590 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:13:16,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:13:16,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:13:16,591 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:13:16,618 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:13:16,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:13:16,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:13:16,639 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:13:16,640 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:13:16,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2019-10-02 22:13:16,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7554ae901/97c9b61fee5e4d02aef51d3bb30dfb45/FLAG2c3640d5a [2019-10-02 22:13:17,400 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:13:17,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2019-10-02 22:13:17,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7554ae901/97c9b61fee5e4d02aef51d3bb30dfb45/FLAG2c3640d5a [2019-10-02 22:13:17,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7554ae901/97c9b61fee5e4d02aef51d3bb30dfb45 [2019-10-02 22:13:17,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:13:17,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:13:17,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:13:17,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:13:17,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:13:17,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:13:17" (1/1) ... [2019-10-02 22:13:17,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bebede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:17, skipping insertion in model container [2019-10-02 22:13:17,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:13:17" (1/1) ... [2019-10-02 22:13:17,606 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:13:17,727 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:13:18,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:13:18,914 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:13:19,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:13:19,436 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:13:19,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19 WrapperNode [2019-10-02 22:13:19,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:13:19,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:13:19,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:13:19,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:13:19,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (1/1) ... [2019-10-02 22:13:19,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (1/1) ... [2019-10-02 22:13:19,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (1/1) ... [2019-10-02 22:13:19,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (1/1) ... [2019-10-02 22:13:19,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (1/1) ... [2019-10-02 22:13:19,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (1/1) ... [2019-10-02 22:13:19,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (1/1) ... [2019-10-02 22:13:19,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:13:19,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:13:19,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:13:19,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:13:19,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (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 22:13:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:13:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:13:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 22:13:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 22:13:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 22:13:19,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:13:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 22:13:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 22:13:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 22:13:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:13:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:13:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:13:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:13:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:13:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:13:23,752 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:13:23,753 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 22:13:23,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:13:23 BoogieIcfgContainer [2019-10-02 22:13:23,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:13:23,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:13:23,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:13:23,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:13:23,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:13:17" (1/3) ... [2019-10-02 22:13:23,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0238e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:13:23, skipping insertion in model container [2019-10-02 22:13:23,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:13:19" (2/3) ... [2019-10-02 22:13:23,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0238e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:13:23, skipping insertion in model container [2019-10-02 22:13:23,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:13:23" (3/3) ... [2019-10-02 22:13:23,762 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label54.c [2019-10-02 22:13:23,772 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:13:23,783 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 22:13:23,800 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 22:13:23,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:13:23,831 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:13:23,831 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:13:23,831 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:13:23,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:13:23,832 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:13:23,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:13:23,832 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:13:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-02 22:13:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-02 22:13:23,887 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:23,888 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] [2019-10-02 22:13:23,891 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:23,897 INFO L82 PathProgramCache]: Analyzing trace with hash 466768385, now seen corresponding path program 1 times [2019-10-02 22:13:23,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:23,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:23,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:23,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:23,950 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:24,228 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 22:13:24,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:24,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:13:24,231 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:24,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:13:24,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:13:24,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:13:24,254 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-10-02 22:13:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:32,283 INFO L93 Difference]: Finished difference Result 2202 states and 3610 transitions. [2019-10-02 22:13:32,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:13:32,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2019-10-02 22:13:32,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:32,327 INFO L225 Difference]: With dead ends: 2202 [2019-10-02 22:13:32,327 INFO L226 Difference]: Without dead ends: 2114 [2019-10-02 22:13:32,329 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 22:13:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-10-02 22:13:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-10-02 22:13:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-10-02 22:13:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3476 transitions. [2019-10-02 22:13:32,508 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3476 transitions. Word has length 40 [2019-10-02 22:13:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:32,510 INFO L475 AbstractCegarLoop]: Abstraction has 2114 states and 3476 transitions. [2019-10-02 22:13:32,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:13:32,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3476 transitions. [2019-10-02 22:13:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-02 22:13:32,524 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:32,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:32,525 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:32,526 INFO L82 PathProgramCache]: Analyzing trace with hash 653681341, now seen corresponding path program 1 times [2019-10-02 22:13:32,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:32,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:32,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:32,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:32,529 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:13:32,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:32,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:13:32,724 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:32,726 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:13:32,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:13:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:13:32,727 INFO L87 Difference]: Start difference. First operand 2114 states and 3476 transitions. Second operand 5 states. [2019-10-02 22:13:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:39,267 INFO L93 Difference]: Finished difference Result 4328 states and 6754 transitions. [2019-10-02 22:13:39,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:13:39,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2019-10-02 22:13:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:39,314 INFO L225 Difference]: With dead ends: 4328 [2019-10-02 22:13:39,315 INFO L226 Difference]: Without dead ends: 4328 [2019-10-02 22:13:39,315 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 22:13:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-10-02 22:13:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-10-02 22:13:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-10-02 22:13:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6660 transitions. [2019-10-02 22:13:39,456 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6660 transitions. Word has length 109 [2019-10-02 22:13:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:39,458 INFO L475 AbstractCegarLoop]: Abstraction has 4296 states and 6660 transitions. [2019-10-02 22:13:39,458 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:13:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6660 transitions. [2019-10-02 22:13:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-02 22:13:39,463 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:39,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:39,465 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash 468776008, now seen corresponding path program 1 times [2019-10-02 22:13:39,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:39,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:39,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:39,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:39,469 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:13:39,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:39,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 22:13:39,696 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:39,697 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:13:39,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:13:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:13:39,698 INFO L87 Difference]: Start difference. First operand 4296 states and 6660 transitions. Second operand 6 states. [2019-10-02 22:13:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:45,182 INFO L93 Difference]: Finished difference Result 6539 states and 8693 transitions. [2019-10-02 22:13:45,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:13:45,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-10-02 22:13:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:45,215 INFO L225 Difference]: With dead ends: 6539 [2019-10-02 22:13:45,216 INFO L226 Difference]: Without dead ends: 6539 [2019-10-02 22:13:45,216 INFO L640 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 [2019-10-02 22:13:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2019-10-02 22:13:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6505. [2019-10-02 22:13:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-10-02 22:13:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8565 transitions. [2019-10-02 22:13:45,369 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8565 transitions. Word has length 136 [2019-10-02 22:13:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:45,372 INFO L475 AbstractCegarLoop]: Abstraction has 6505 states and 8565 transitions. [2019-10-02 22:13:45,372 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:13:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8565 transitions. [2019-10-02 22:13:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-02 22:13:45,376 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:45,377 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:13:45,377 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:45,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1286187466, now seen corresponding path program 1 times [2019-10-02 22:13:45,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:45,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:45,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:45,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:45,383 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-02 22:13:45,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:13:45,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:13:45,606 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:13:45,607 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:13:45,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:13:45,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:13:45,607 INFO L87 Difference]: Start difference. First operand 6505 states and 8565 transitions. Second operand 4 states. [2019-10-02 22:13:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:13:52,557 INFO L93 Difference]: Finished difference Result 19306 states and 24415 transitions. [2019-10-02 22:13:52,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:13:52,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2019-10-02 22:13:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:13:52,641 INFO L225 Difference]: With dead ends: 19306 [2019-10-02 22:13:52,642 INFO L226 Difference]: Without dead ends: 19306 [2019-10-02 22:13:52,642 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 22:13:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19306 states. [2019-10-02 22:13:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19306 to 19306. [2019-10-02 22:13:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19306 states. [2019-10-02 22:13:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 24415 transitions. [2019-10-02 22:13:53,015 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 24415 transitions. Word has length 215 [2019-10-02 22:13:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:13:53,016 INFO L475 AbstractCegarLoop]: Abstraction has 19306 states and 24415 transitions. [2019-10-02 22:13:53,016 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:13:53,016 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 24415 transitions. [2019-10-02 22:13:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2019-10-02 22:13:53,039 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:13:53,040 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:53,041 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:13:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:13:53,041 INFO L82 PathProgramCache]: Analyzing trace with hash -679480734, now seen corresponding path program 1 times [2019-10-02 22:13:53,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:13:53,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:53,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:13:53,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:13:53,043 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:13:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:13:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 197 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-02 22:13:53,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:13:53,971 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:13:53,972 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 467 with the following transitions: [2019-10-02 22:13:53,974 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], [1851], [1853], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2224], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [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], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-10-02 22:13:54,042 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:13:54,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:14:08,830 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:14:08,832 INFO L272 AbstractInterpreter]: Visited 214 different actions 214 times. Never merged. Never widened. Performed 445 root evaluator evaluations with a maximum evaluation depth of 13. Performed 445 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 22:14:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:14:08,837 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:14:26,559 INFO L227 lantSequenceWeakener]: Weakened 442 states. On average, predicates are now at 77.56% of their original sizes. [2019-10-02 22:14:26,560 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:14:26,697 INFO L420 sIntCurrentIteration]: We unified 465 AI predicates to 465 [2019-10-02 22:14:26,698 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:14:26,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:14:26,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2019-10-02 22:14:26,699 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:14:26,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 22:14:26,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 22:14:26,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-02 22:14:26,701 INFO L87 Difference]: Start difference. First operand 19306 states and 24415 transitions. Second operand 11 states. [2019-10-02 22:16:08,612 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.