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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 21:59:52,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 21:59:52,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 21:59:52,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 21:59:52,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 21:59:52,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 21:59:52,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 21:59:52,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 21:59:52,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 21:59:52,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 21:59:52,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 21:59:52,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 21:59:52,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 21:59:52,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 21:59:52,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 21:59:52,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 21:59:52,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 21:59:52,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 21:59:52,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 21:59:52,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 21:59:52,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 21:59:52,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 21:59:52,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 21:59:52,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 21:59:52,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 21:59:52,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 21:59:52,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 21:59:52,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 21:59:52,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 21:59:52,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 21:59:52,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 21:59:52,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 21:59:52,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 21:59:52,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 21:59:52,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 21:59:52,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 21:59:52,608 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 21:59:52,623 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 21:59:52,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 21:59:52,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 21:59:52,624 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 21:59:52,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 21:59:52,624 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 21:59:52,625 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 21:59:52,625 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 21:59:52,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 21:59:52,625 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 21:59:52,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 21:59:52,626 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 21:59:52,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 21:59:52,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 21:59:52,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 21:59:52,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 21:59:52,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 21:59:52,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 21:59:52,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 21:59:52,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 21:59:52,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 21:59:52,628 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 21:59:52,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 21:59:52,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 21:59:52,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 21:59:52,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 21:59:52,629 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 21:59:52,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 21:59:52,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 21:59:52,630 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 21:59:52,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 21:59:52,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 21:59:52,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 21:59:52,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 21:59:52,673 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 21:59:52,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-10-02 21:59:52,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c774239ba/688c7a164e73409881bc0646fba813c4/FLAGf7925008d [2019-10-02 21:59:53,472 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 21:59:53,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-10-02 21:59:53,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c774239ba/688c7a164e73409881bc0646fba813c4/FLAGf7925008d [2019-10-02 21:59:53,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c774239ba/688c7a164e73409881bc0646fba813c4 [2019-10-02 21:59:53,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 21:59:53,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 21:59:53,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 21:59:53,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 21:59:53,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 21:59:53,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:59:53" (1/1) ... [2019-10-02 21:59:53,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef833d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:53, skipping insertion in model container [2019-10-02 21:59:53,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:59:53" (1/1) ... [2019-10-02 21:59:53,571 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 21:59:53,695 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 21:59:54,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:59:54,797 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 21:59:55,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:59:55,396 INFO L192 MainTranslator]: Completed translation [2019-10-02 21:59:55,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55 WrapperNode [2019-10-02 21:59:55,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 21:59:55,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 21:59:55,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 21:59:55,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 21:59:55,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (1/1) ... [2019-10-02 21:59:55,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (1/1) ... [2019-10-02 21:59:55,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (1/1) ... [2019-10-02 21:59:55,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (1/1) ... [2019-10-02 21:59:55,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (1/1) ... [2019-10-02 21:59:55,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (1/1) ... [2019-10-02 21:59:55,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (1/1) ... [2019-10-02 21:59:55,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 21:59:55,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 21:59:55,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 21:59:55,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 21:59:55,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (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 21:59:55,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 21:59:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 21:59:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 21:59:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 21:59:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 21:59:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 21:59:55,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 21:59:55,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 21:59:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 21:59:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 21:59:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 21:59:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 21:59:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 21:59:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 21:59:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 21:59:59,588 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 21:59:59,588 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 21:59:59,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:59:59 BoogieIcfgContainer [2019-10-02 21:59:59,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 21:59:59,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 21:59:59,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 21:59:59,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 21:59:59,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 09:59:53" (1/3) ... [2019-10-02 21:59:59,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d64dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:59:59, skipping insertion in model container [2019-10-02 21:59:59,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:59:55" (2/3) ... [2019-10-02 21:59:59,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d64dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:59:59, skipping insertion in model container [2019-10-02 21:59:59,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:59:59" (3/3) ... [2019-10-02 21:59:59,601 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label26.c [2019-10-02 21:59:59,613 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 21:59:59,624 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 21:59:59,643 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 21:59:59,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 21:59:59,678 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 21:59:59,679 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 21:59:59,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 21:59:59,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 21:59:59,679 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 21:59:59,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 21:59:59,679 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 21:59:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-02 21:59:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-02 21:59:59,749 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:59:59,750 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:59:59,753 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:59:59,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:59:59,759 INFO L82 PathProgramCache]: Analyzing trace with hash 835114033, now seen corresponding path program 1 times [2019-10-02 21:59:59,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:59:59,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:59:59,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:59:59,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:59:59,822 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:59:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:00:00,173 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 22:00:00,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:00:00,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:00:00,176 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:00:00,183 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:00:00,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:00:00,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:00:00,202 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-10-02 22:00:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:00:04,982 INFO L93 Difference]: Finished difference Result 1480 states and 2747 transitions. [2019-10-02 22:00:04,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:00:04,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-10-02 22:00:04,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:00:05,025 INFO L225 Difference]: With dead ends: 1480 [2019-10-02 22:00:05,025 INFO L226 Difference]: Without dead ends: 1412 [2019-10-02 22:00:05,027 INFO L640 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 [2019-10-02 22:00:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-10-02 22:00:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-10-02 22:00:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-10-02 22:00:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-10-02 22:00:05,217 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 68 [2019-10-02 22:00:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:00:05,217 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-10-02 22:00:05,218 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:00:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-10-02 22:00:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-02 22:00:05,224 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:00:05,224 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:00:05,225 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:00:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:00:05,226 INFO L82 PathProgramCache]: Analyzing trace with hash 506598757, now seen corresponding path program 1 times [2019-10-02 22:00:05,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:00:05,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:05,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:00:05,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:05,228 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:00:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:00:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:00:05,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:00:05,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 22:00:05,442 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:00:05,443 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:00:05,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:00:05,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:00:05,444 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 6 states. [2019-10-02 22:00:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:00:10,837 INFO L93 Difference]: Finished difference Result 2888 states and 4803 transitions. [2019-10-02 22:00:10,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 22:00:10,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-02 22:00:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:00:10,859 INFO L225 Difference]: With dead ends: 2888 [2019-10-02 22:00:10,859 INFO L226 Difference]: Without dead ends: 2888 [2019-10-02 22:00:10,860 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 22:00:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-10-02 22:00:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2864. [2019-10-02 22:00:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-10-02 22:00:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4749 transitions. [2019-10-02 22:00:10,953 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4749 transitions. Word has length 141 [2019-10-02 22:00:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:00:10,954 INFO L475 AbstractCegarLoop]: Abstraction has 2864 states and 4749 transitions. [2019-10-02 22:00:10,954 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:00:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4749 transitions. [2019-10-02 22:00:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-02 22:00:10,959 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:00:10,959 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 22:00:10,959 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:00:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:00:10,960 INFO L82 PathProgramCache]: Analyzing trace with hash 288076576, now seen corresponding path program 1 times [2019-10-02 22:00:10,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:00:10,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:10,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:00:10,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:10,962 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:00:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:00:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:00:11,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:00:11,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 22:00:11,107 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:00:11,107 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 22:00:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 22:00:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:00:11,108 INFO L87 Difference]: Start difference. First operand 2864 states and 4749 transitions. Second operand 5 states. [2019-10-02 22:00:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:00:16,833 INFO L93 Difference]: Finished difference Result 5896 states and 8628 transitions. [2019-10-02 22:00:16,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 22:00:16,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-02 22:00:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:00:16,877 INFO L225 Difference]: With dead ends: 5896 [2019-10-02 22:00:16,878 INFO L226 Difference]: Without dead ends: 5896 [2019-10-02 22:00:16,878 INFO L640 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 [2019-10-02 22:00:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2019-10-02 22:00:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5815. [2019-10-02 22:00:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2019-10-02 22:00:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8477 transitions. [2019-10-02 22:00:17,093 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8477 transitions. Word has length 144 [2019-10-02 22:00:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:00:17,094 INFO L475 AbstractCegarLoop]: Abstraction has 5815 states and 8477 transitions. [2019-10-02 22:00:17,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 22:00:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8477 transitions. [2019-10-02 22:00:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-02 22:00:17,102 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:00:17,103 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 22:00:17,103 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:00:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:00:17,104 INFO L82 PathProgramCache]: Analyzing trace with hash 647429316, now seen corresponding path program 1 times [2019-10-02 22:00:17,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:00:17,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:17,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:00:17,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:17,110 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:00:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:00:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:00:17,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:00:17,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:00:17,434 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:00:17,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:00:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:00:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:00:17,436 INFO L87 Difference]: Start difference. First operand 5815 states and 8477 transitions. Second operand 4 states. [2019-10-02 22:00:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:00:23,700 INFO L93 Difference]: Finished difference Result 15104 states and 21148 transitions. [2019-10-02 22:00:23,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:00:23,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-10-02 22:00:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:00:23,775 INFO L225 Difference]: With dead ends: 15104 [2019-10-02 22:00:23,775 INFO L226 Difference]: Without dead ends: 15104 [2019-10-02 22:00:23,776 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 22:00:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15104 states. [2019-10-02 22:00:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15104 to 15099. [2019-10-02 22:00:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15099 states. [2019-10-02 22:00:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 21133 transitions. [2019-10-02 22:00:24,122 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 21133 transitions. Word has length 174 [2019-10-02 22:00:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:00:24,124 INFO L475 AbstractCegarLoop]: Abstraction has 15099 states and 21133 transitions. [2019-10-02 22:00:24,124 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:00:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 21133 transitions. [2019-10-02 22:00:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2019-10-02 22:00:24,139 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:00:24,140 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, 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, 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] [2019-10-02 22:00:24,140 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:00:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:00:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash -138076367, now seen corresponding path program 1 times [2019-10-02 22:00:24,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:00:24,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:24,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:00:24,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:00:24,142 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:00:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:00:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 183 proven. 191 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-02 22:00:24,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:00:24,537 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:00:24,538 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 400 with the following transitions: [2019-10-02 22:00:24,540 INFO L207 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2075], [2077], [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], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-10-02 22:00:24,602 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:00:24,602 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:00:33,149 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:00:33,151 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Performed 315 root evaluator evaluations with a maximum evaluation depth of 13. Performed 315 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 22:00:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:00:33,156 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:00:43,698 INFO L227 lantSequenceWeakener]: Weakened 375 states. On average, predicates are now at 77.95% of their original sizes. [2019-10-02 22:00:43,698 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:00:43,797 INFO L420 sIntCurrentIteration]: We unified 398 AI predicates to 398 [2019-10-02 22:00:43,798 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:00:43,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:00:43,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-10-02 22:00:43,802 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:00:43,803 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 22:00:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 22:00:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 22:00:43,804 INFO L87 Difference]: Start difference. First operand 15099 states and 21133 transitions. Second operand 10 states. [2019-10-02 22:02:19,973 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.