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/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:55:37,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:55:37,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:55:37,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:55:37,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:55:37,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:55:37,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:55:37,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:55:37,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:55:37,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:55:37,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:55:37,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:55:37,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:55:37,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:55:37,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:55:37,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:55:37,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:55:37,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:55:37,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:55:37,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:55:37,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:55:37,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:55:37,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:55:37,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:55:37,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:55:37,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:55:37,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:55:37,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:55:37,903 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 05:55:37,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:55:37,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:55:37,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:55:37,919 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:55:37,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:55:37,920 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:55:37,920 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:55:37,920 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:55:37,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:55:37,921 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:55:37,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:55:37,922 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:55:37,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:55:37,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:55:37,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:55:37,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:55:37,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:55:37,924 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:55:37,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:55:37,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:55:37,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:55:37,925 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:55:37,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:55:37,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:55:37,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:55:37,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:55:37,926 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:55:37,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:55:37,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:55:37,927 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:55:37,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:55:37,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:55:37,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:55:37,984 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:55:37,984 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:55:37,985 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2019-09-09 05:55:38,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8432064b/5f2c62069ff84df7adb4e64f3c53050e/FLAG850f62079 [2019-09-09 05:55:38,572 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:55:38,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2019-09-09 05:55:38,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8432064b/5f2c62069ff84df7adb4e64f3c53050e/FLAG850f62079 [2019-09-09 05:55:38,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8432064b/5f2c62069ff84df7adb4e64f3c53050e [2019-09-09 05:55:38,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:55:38,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:55:38,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:55:38,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:55:38,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:55:38,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:55:38" (1/1) ... [2019-09-09 05:55:38,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d455d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:38, skipping insertion in model container [2019-09-09 05:55:38,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:55:38" (1/1) ... [2019-09-09 05:55:38,906 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:55:38,970 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:55:39,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:55:39,716 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:55:39,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:55:39,849 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:55:39,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39 WrapperNode [2019-09-09 05:55:39,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:55:39,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:55:39,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:55:39,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:55:39,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (1/1) ... [2019-09-09 05:55:39,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (1/1) ... [2019-09-09 05:55:39,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (1/1) ... [2019-09-09 05:55:39,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (1/1) ... [2019-09-09 05:55:39,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (1/1) ... [2019-09-09 05:55:39,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (1/1) ... [2019-09-09 05:55:39,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (1/1) ... [2019-09-09 05:55:39,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:55:39,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:55:39,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:55:39,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:55:39,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (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 05:55:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:55:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:55:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 05:55:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:55:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 05:55:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:55:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:55:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 05:55:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:55:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:55:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:55:41,418 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:55:41,418 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 05:55:41,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:55:41 BoogieIcfgContainer [2019-09-09 05:55:41,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:55:41,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:55:41,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:55:41,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:55:41,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:55:38" (1/3) ... [2019-09-09 05:55:41,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15142775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:55:41, skipping insertion in model container [2019-09-09 05:55:41,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:55:39" (2/3) ... [2019-09-09 05:55:41,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15142775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:55:41, skipping insertion in model container [2019-09-09 05:55:41,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:55:41" (3/3) ... [2019-09-09 05:55:41,438 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2019-09-09 05:55:41,452 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:55:41,462 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:55:41,481 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:55:41,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:55:41,512 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:55:41,512 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:55:41,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:55:41,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:55:41,513 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:55:41,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:55:41,513 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:55:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 05:55:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-09 05:55:41,554 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:41,556 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:55:41,558 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:41,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:41,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1920403729, now seen corresponding path program 1 times [2019-09-09 05:55:41,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:41,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:41,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:41,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:41,607 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:42,064 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 05:55:42,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:42,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:55:42,067 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:42,073 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:55:42,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:55:42,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:42,090 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 05:55:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:42,992 INFO L93 Difference]: Finished difference Result 346 states and 499 transitions. [2019-09-09 05:55:42,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:55:42,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-09-09 05:55:42,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:43,020 INFO L225 Difference]: With dead ends: 346 [2019-09-09 05:55:43,020 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 05:55:43,023 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 05:55:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 05:55:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 05:55:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 05:55:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-09-09 05:55:43,092 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 119 [2019-09-09 05:55:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:43,093 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-09-09 05:55:43,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:55:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-09-09 05:55:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-09 05:55:43,098 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:43,098 INFO L399 BasicCegarLoop]: trace histogram [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 05:55:43,098 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:43,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash 10659704, now seen corresponding path program 1 times [2019-09-09 05:55:43,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:43,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:43,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:43,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:43,101 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:43,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:43,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 05:55:43,208 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:43,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 05:55:43,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 05:55:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 05:55:43,211 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-09-09 05:55:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:43,990 INFO L93 Difference]: Finished difference Result 568 states and 814 transitions. [2019-09-09 05:55:43,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 05:55:43,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-09-09 05:55:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:44,003 INFO L225 Difference]: With dead ends: 568 [2019-09-09 05:55:44,003 INFO L226 Difference]: Without dead ends: 568 [2019-09-09 05:55:44,006 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 05:55:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-09-09 05:55:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-09-09 05:55:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-09-09 05:55:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2019-09-09 05:55:44,069 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 129 [2019-09-09 05:55:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:44,070 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2019-09-09 05:55:44,070 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 05:55:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2019-09-09 05:55:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-09 05:55:44,074 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:44,074 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 05:55:44,074 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:44,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:44,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1525536778, now seen corresponding path program 1 times [2019-09-09 05:55:44,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:44,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:44,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:44,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:44,076 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:44,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:44,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 05:55:44,448 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:44,451 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 05:55:44,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 05:55:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 05:55:44,452 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 5 states. [2019-09-09 05:55:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:45,069 INFO L93 Difference]: Finished difference Result 655 states and 886 transitions. [2019-09-09 05:55:45,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:55:45,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-09-09 05:55:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:45,074 INFO L225 Difference]: With dead ends: 655 [2019-09-09 05:55:45,074 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 05:55:45,074 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 05:55:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 05:55:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 05:55:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 05:55:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 712 transitions. [2019-09-09 05:55:45,095 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 712 transitions. Word has length 130 [2019-09-09 05:55:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:45,096 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 712 transitions. [2019-09-09 05:55:45,096 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 05:55:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 712 transitions. [2019-09-09 05:55:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-09-09 05:55:45,100 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:45,100 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 05:55:45,101 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:45,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:45,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1052025540, now seen corresponding path program 1 times [2019-09-09 05:55:45,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:45,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:45,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:45,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:45,103 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:45,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:45,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 05:55:45,465 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:45,465 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 05:55:45,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 05:55:45,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 05:55:45,466 INFO L87 Difference]: Start difference. First operand 554 states and 712 transitions. Second operand 5 states. [2019-09-09 05:55:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:46,124 INFO L93 Difference]: Finished difference Result 636 states and 796 transitions. [2019-09-09 05:55:46,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:55:46,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-09-09 05:55:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:46,130 INFO L225 Difference]: With dead ends: 636 [2019-09-09 05:55:46,130 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 05:55:46,131 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 05:55:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 05:55:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 05:55:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 05:55:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 708 transitions. [2019-09-09 05:55:46,150 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 708 transitions. Word has length 131 [2019-09-09 05:55:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:46,150 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 708 transitions. [2019-09-09 05:55:46,150 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 05:55:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 708 transitions. [2019-09-09 05:55:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-09 05:55:46,153 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:46,153 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 05:55:46,154 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:46,154 INFO L82 PathProgramCache]: Analyzing trace with hash -866015874, now seen corresponding path program 1 times [2019-09-09 05:55:46,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:46,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:46,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:46,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:46,156 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:46,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:55:46,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:55:46,267 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:55:46,268 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:55:46,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:55:46,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:46,269 INFO L87 Difference]: Start difference. First operand 554 states and 708 transitions. Second operand 3 states. [2019-09-09 05:55:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:55:46,768 INFO L93 Difference]: Finished difference Result 961 states and 1182 transitions. [2019-09-09 05:55:46,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:55:46,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-09-09 05:55:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:55:46,774 INFO L225 Difference]: With dead ends: 961 [2019-09-09 05:55:46,774 INFO L226 Difference]: Without dead ends: 961 [2019-09-09 05:55:46,774 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:55:46,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-09-09 05:55:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2019-09-09 05:55:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-09-09 05:55:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1180 transitions. [2019-09-09 05:55:46,830 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1180 transitions. Word has length 134 [2019-09-09 05:55:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:55:46,830 INFO L475 AbstractCegarLoop]: Abstraction has 959 states and 1180 transitions. [2019-09-09 05:55:46,831 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:55:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1180 transitions. [2019-09-09 05:55:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-09-09 05:55:46,834 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:55:46,835 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:55:46,835 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:55:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:55:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash -494413009, now seen corresponding path program 1 times [2019-09-09 05:55:46,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:55:46,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:46,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:55:46,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:55:46,837 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:55:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:55:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:55:46,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:55:46,953 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:55:46,954 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 166 with the following transitions: [2019-09-09 05:55:46,956 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [597], [599], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-09-09 05:55:47,030 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:55:47,030 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)