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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 16:20:06,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 16:20:06,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 16:20:06,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 16:20:06,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 16:20:06,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 16:20:06,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 16:20:06,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 16:20:06,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 16:20:06,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 16:20:06,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 16:20:06,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 16:20:06,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 16:20:06,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 16:20:06,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 16:20:06,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 16:20:06,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 16:20:06,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 16:20:06,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 16:20:06,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 16:20:06,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 16:20:06,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 16:20:06,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 16:20:06,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 16:20:06,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 16:20:06,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 16:20:06,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 16:20:06,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 16:20:06,839 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 16:20:06,854 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 16:20:06,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 16:20:06,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 16:20:06,855 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 16:20:06,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 16:20:06,856 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 16:20:06,856 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 16:20:06,857 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 16:20:06,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 16:20:06,857 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 16:20:06,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 16:20:06,858 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 16:20:06,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 16:20:06,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 16:20:06,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 16:20:06,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 16:20:06,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 16:20:06,859 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 16:20:06,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 16:20:06,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 16:20:06,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 16:20:06,860 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 16:20:06,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 16:20:06,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 16:20:06,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 16:20:06,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 16:20:06,861 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 16:20:06,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 16:20:06,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 16:20:06,861 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 16:20:06,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 16:20:06,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 16:20:06,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 16:20:06,912 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 16:20:06,913 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 16:20:06,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2019-09-09 16:20:06,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb674d32/2ff1793968984c96b06a4a01aca6333e/FLAG86d65bf81 [2019-09-09 16:20:07,727 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 16:20:07,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label25.c [2019-09-09 16:20:07,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb674d32/2ff1793968984c96b06a4a01aca6333e/FLAG86d65bf81 [2019-09-09 16:20:07,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb674d32/2ff1793968984c96b06a4a01aca6333e [2019-09-09 16:20:07,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 16:20:07,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 16:20:07,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 16:20:07,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 16:20:07,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 16:20:07,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 04:20:07" (1/1) ... [2019-09-09 16:20:07,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adc755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:07, skipping insertion in model container [2019-09-09 16:20:07,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 04:20:07" (1/1) ... [2019-09-09 16:20:07,862 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 16:20:08,024 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 16:20:09,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 16:20:09,614 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 16:20:10,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 16:20:10,254 INFO L192 MainTranslator]: Completed translation [2019-09-09 16:20:10,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10 WrapperNode [2019-09-09 16:20:10,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 16:20:10,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 16:20:10,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 16:20:10,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 16:20:10,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (1/1) ... [2019-09-09 16:20:10,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (1/1) ... [2019-09-09 16:20:10,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (1/1) ... [2019-09-09 16:20:10,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (1/1) ... [2019-09-09 16:20:10,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (1/1) ... [2019-09-09 16:20:10,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (1/1) ... [2019-09-09 16:20:10,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (1/1) ... [2019-09-09 16:20:10,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 16:20:10,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 16:20:10,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 16:20:10,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 16:20:10,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (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 16:20:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 16:20:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 16:20:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 16:20:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 16:20:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 16:20:10,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 16:20:10,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 16:20:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 16:20:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 16:20:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 16:20:10,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 16:20:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 16:20:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 16:20:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 16:20:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 16:20:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 16:20:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 16:20:15,707 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 16:20:15,708 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 16:20:15,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 04:20:15 BoogieIcfgContainer [2019-09-09 16:20:15,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 16:20:15,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 16:20:15,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 16:20:15,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 16:20:15,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 04:20:07" (1/3) ... [2019-09-09 16:20:15,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9016b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 04:20:15, skipping insertion in model container [2019-09-09 16:20:15,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:20:10" (2/3) ... [2019-09-09 16:20:15,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9016b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 04:20:15, skipping insertion in model container [2019-09-09 16:20:15,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 04:20:15" (3/3) ... [2019-09-09 16:20:15,719 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label25.c [2019-09-09 16:20:15,729 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 16:20:15,739 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 16:20:15,757 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 16:20:15,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 16:20:15,786 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 16:20:15,786 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 16:20:15,786 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 16:20:15,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 16:20:15,787 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 16:20:15,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 16:20:15,787 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 16:20:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-09 16:20:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-09 16:20:15,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:20:15,834 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 16:20:15,836 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:20:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:20:15,842 INFO L82 PathProgramCache]: Analyzing trace with hash -996622542, now seen corresponding path program 1 times [2019-09-09 16:20:15,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:20:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:15,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:20:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:15,904 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:20:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:20:16,198 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 16:20:16,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:20:16,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 16:20:16,205 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:20:16,211 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 16:20:16,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 16:20:16,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 16:20:16,229 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-09 16:20:22,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:20:22,330 INFO L93 Difference]: Finished difference Result 1610 states and 2967 transitions. [2019-09-09 16:20:22,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 16:20:22,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-09-09 16:20:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:20:22,377 INFO L225 Difference]: With dead ends: 1610 [2019-09-09 16:20:22,378 INFO L226 Difference]: Without dead ends: 1542 [2019-09-09 16:20:22,381 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 16:20:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-09 16:20:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-09 16:20:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-09 16:20:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2858 transitions. [2019-09-09 16:20:22,529 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2858 transitions. Word has length 23 [2019-09-09 16:20:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:20:22,530 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2858 transitions. [2019-09-09 16:20:22,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 16:20:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2858 transitions. [2019-09-09 16:20:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-09 16:20:22,538 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:20:22,539 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 16:20:22,539 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:20:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:20:22,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1746514767, now seen corresponding path program 1 times [2019-09-09 16:20:22,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:20:22,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:22,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:20:22,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:22,543 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:20:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:20:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:20:22,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:20:22,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 16:20:22,777 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:20:22,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 16:20:22,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 16:20:22,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 16:20:22,782 INFO L87 Difference]: Start difference. First operand 1542 states and 2858 transitions. Second operand 5 states. [2019-09-09 16:20:29,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:20:29,564 INFO L93 Difference]: Finished difference Result 3149 states and 5172 transitions. [2019-09-09 16:20:29,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 16:20:29,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-09-09 16:20:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:20:29,585 INFO L225 Difference]: With dead ends: 3149 [2019-09-09 16:20:29,586 INFO L226 Difference]: Without dead ends: 3149 [2019-09-09 16:20:29,586 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 16:20:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2019-09-09 16:20:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3117. [2019-09-09 16:20:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2019-09-09 16:20:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 5125 transitions. [2019-09-09 16:20:29,694 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 5125 transitions. Word has length 100 [2019-09-09 16:20:29,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:20:29,695 INFO L475 AbstractCegarLoop]: Abstraction has 3117 states and 5125 transitions. [2019-09-09 16:20:29,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 16:20:29,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 5125 transitions. [2019-09-09 16:20:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-09 16:20:29,698 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:20:29,698 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 16:20:29,698 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:20:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:20:29,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1263579074, now seen corresponding path program 1 times [2019-09-09 16:20:29,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:20:29,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:29,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:20:29,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:29,701 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:20:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:20:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:20:29,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:20:29,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 16:20:29,863 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:20:29,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 16:20:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 16:20:29,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 16:20:29,865 INFO L87 Difference]: Start difference. First operand 3117 states and 5125 transitions. Second operand 6 states. [2019-09-09 16:20:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:20:36,367 INFO L93 Difference]: Finished difference Result 4880 states and 7785 transitions. [2019-09-09 16:20:36,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 16:20:36,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2019-09-09 16:20:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:20:36,401 INFO L225 Difference]: With dead ends: 4880 [2019-09-09 16:20:36,401 INFO L226 Difference]: Without dead ends: 4880 [2019-09-09 16:20:36,411 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 16:20:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2019-09-09 16:20:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4804. [2019-09-09 16:20:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4804 states. [2019-09-09 16:20:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 7622 transitions. [2019-09-09 16:20:36,566 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 7622 transitions. Word has length 113 [2019-09-09 16:20:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:20:36,569 INFO L475 AbstractCegarLoop]: Abstraction has 4804 states and 7622 transitions. [2019-09-09 16:20:36,569 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 16:20:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 7622 transitions. [2019-09-09 16:20:36,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-09 16:20:36,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:20:36,579 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 16:20:36,579 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:20:36,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:20:36,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1118103507, now seen corresponding path program 1 times [2019-09-09 16:20:36,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:20:36,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:36,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:20:36,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:36,581 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:20:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:20:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:20:36,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:20:36,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 16:20:36,720 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:20:36,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 16:20:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 16:20:36,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 16:20:36,722 INFO L87 Difference]: Start difference. First operand 4804 states and 7622 transitions. Second operand 6 states. [2019-09-09 16:20:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:20:43,473 INFO L93 Difference]: Finished difference Result 9913 states and 15824 transitions. [2019-09-09 16:20:43,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 16:20:43,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2019-09-09 16:20:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:20:43,532 INFO L225 Difference]: With dead ends: 9913 [2019-09-09 16:20:43,532 INFO L226 Difference]: Without dead ends: 9913 [2019-09-09 16:20:43,534 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 16:20:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2019-09-09 16:20:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 9747. [2019-09-09 16:20:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9747 states. [2019-09-09 16:20:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9747 states to 9747 states and 15253 transitions. [2019-09-09 16:20:43,822 INFO L78 Accepts]: Start accepts. Automaton has 9747 states and 15253 transitions. Word has length 118 [2019-09-09 16:20:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:20:43,825 INFO L475 AbstractCegarLoop]: Abstraction has 9747 states and 15253 transitions. [2019-09-09 16:20:43,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 16:20:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 9747 states and 15253 transitions. [2019-09-09 16:20:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 16:20:43,828 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:20:43,828 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 16:20:43,828 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:20:43,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:20:43,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2035597981, now seen corresponding path program 1 times [2019-09-09 16:20:43,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:20:43,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:43,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:20:43,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:43,831 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:20:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:20:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:20:44,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:20:44,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 16:20:44,023 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:20:44,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 16:20:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 16:20:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 16:20:44,025 INFO L87 Difference]: Start difference. First operand 9747 states and 15253 transitions. Second operand 6 states. [2019-09-09 16:20:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:20:57,422 INFO L93 Difference]: Finished difference Result 29625 states and 49026 transitions. [2019-09-09 16:20:57,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 16:20:57,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-09-09 16:20:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:20:57,612 INFO L225 Difference]: With dead ends: 29625 [2019-09-09 16:20:57,613 INFO L226 Difference]: Without dead ends: 29625 [2019-09-09 16:20:57,613 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 16:20:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29625 states. [2019-09-09 16:20:58,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29625 to 29421. [2019-09-09 16:20:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29421 states. [2019-09-09 16:20:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29421 states to 29421 states and 46041 transitions. [2019-09-09 16:20:58,552 INFO L78 Accepts]: Start accepts. Automaton has 29421 states and 46041 transitions. Word has length 126 [2019-09-09 16:20:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:20:58,552 INFO L475 AbstractCegarLoop]: Abstraction has 29421 states and 46041 transitions. [2019-09-09 16:20:58,552 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 16:20:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand 29421 states and 46041 transitions. [2019-09-09 16:20:58,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-09 16:20:58,555 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:20:58,556 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 16:20:58,556 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:20:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:20:58,556 INFO L82 PathProgramCache]: Analyzing trace with hash -381787866, now seen corresponding path program 1 times [2019-09-09 16:20:58,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:20:58,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:58,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:20:58,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:20:58,560 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:20:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:20:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:20:59,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:20:59,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 16:20:59,639 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:20:59,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 16:20:59,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 16:20:59,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 16:20:59,641 INFO L87 Difference]: Start difference. First operand 29421 states and 46041 transitions. Second operand 6 states. [2019-09-09 16:21:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:21:06,648 INFO L93 Difference]: Finished difference Result 44349 states and 69131 transitions. [2019-09-09 16:21:06,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 16:21:06,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2019-09-09 16:21:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:21:06,857 INFO L225 Difference]: With dead ends: 44349 [2019-09-09 16:21:06,857 INFO L226 Difference]: Without dead ends: 44349 [2019-09-09 16:21:06,857 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 16:21:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44349 states. [2019-09-09 16:21:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44349 to 42597. [2019-09-09 16:21:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42597 states. [2019-09-09 16:21:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42597 states to 42597 states and 64872 transitions. [2019-09-09 16:21:08,123 INFO L78 Accepts]: Start accepts. Automaton has 42597 states and 64872 transitions. Word has length 147 [2019-09-09 16:21:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:21:08,125 INFO L475 AbstractCegarLoop]: Abstraction has 42597 states and 64872 transitions. [2019-09-09 16:21:08,126 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 16:21:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 42597 states and 64872 transitions. [2019-09-09 16:21:08,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-09 16:21:08,128 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:21:08,128 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:08,132 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:21:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:21:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1864903319, now seen corresponding path program 1 times [2019-09-09 16:21:08,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:21:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:21:08,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:21:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:21:08,136 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:21:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:21:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 16:21:08,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 16:21:08,306 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 16:21:08,308 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2019-09-09 16:21:08,311 INFO L207 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1959], [1961], [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], [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], [2664], [3240], [3244], [3253], [3257], [3259], [3270], [3271], [3272], [3274], [3275] [2019-09-09 16:21:08,382 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 16:21:08,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 16:21:44,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 16:22:17,980 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 16:22:17,983 INFO L272 AbstractInterpreter]: Visited 152 different actions 299 times. Merged at 4 different actions 5 times. Never widened. Performed 700 root evaluator evaluations with a maximum evaluation depth of 17. Performed 700 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2019-09-09 16:22:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:22:17,988 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 16:22:43,046 INFO L227 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 75% of their original sizes. [2019-09-09 16:22:43,046 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 16:22:43,177 INFO L420 sIntCurrentIteration]: We unified 167 AI predicates to 167 [2019-09-09 16:22:43,177 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 16:22:43,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 16:22:43,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2019-09-09 16:22:43,179 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:22:43,180 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-09 16:22:43,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-09 16:22:43,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2019-09-09 16:22:43,180 INFO L87 Difference]: Start difference. First operand 42597 states and 64872 transitions. Second operand 13 states.