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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:25:17,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:25:17,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:25:17,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:25:17,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 06:25:17,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 06:25:17,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 06:25:17,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 06:25:17,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 06:25:17,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 06:25:17,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 06:25:17,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 06:25:17,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 06:25:17,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 06:25:17,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 06:25:17,291 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 06:25:17,308 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:25:17,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:25:17,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:25:17,309 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:25:17,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:25:17,310 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:25:17,310 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:25:17,310 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:25:17,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:25:17,311 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:25:17,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:25:17,312 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:25:17,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:25:17,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:25:17,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:25:17,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:25:17,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:25:17,313 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:25:17,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:25:17,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:25:17,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:25:17,314 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:25:17,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:25:17,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:25:17,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:25:17,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:25:17,315 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:25:17,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:25:17,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:25:17,315 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:25:17,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:25:17,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:25:17,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:25:17,374 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:25:17,374 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:25:17,375 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label45.c [2019-09-09 06:25:17,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b34fab6/3938cb0398fd43599551ad32395951da/FLAG25981566e [2019-09-09 06:25:17,986 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:25:17,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label45.c [2019-09-09 06:25:18,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b34fab6/3938cb0398fd43599551ad32395951da/FLAG25981566e [2019-09-09 06:25:18,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11b34fab6/3938cb0398fd43599551ad32395951da [2019-09-09 06:25:18,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:25:18,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:25:18,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:25:18,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:25:18,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:25:18,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:25:18" (1/1) ... [2019-09-09 06:25:18,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f9c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:18, skipping insertion in model container [2019-09-09 06:25:18,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:25:18" (1/1) ... [2019-09-09 06:25:18,291 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:25:18,347 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:25:18,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:25:18,884 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:25:19,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:25:19,049 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:25:19,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19 WrapperNode [2019-09-09 06:25:19,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:25:19,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:25:19,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:25:19,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:25:19,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... [2019-09-09 06:25:19,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... [2019-09-09 06:25:19,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... [2019-09-09 06:25:19,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... [2019-09-09 06:25:19,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... [2019-09-09 06:25:19,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... [2019-09-09 06:25:19,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... [2019-09-09 06:25:19,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:25:19,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:25:19,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:25:19,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:25:19,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:25:19,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:25:19,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:25:19,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:25:19,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:25:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:25:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:25:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:25:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:25:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:25:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:25:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:25:20,351 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:25:20,352 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:25:20,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:25:20 BoogieIcfgContainer [2019-09-09 06:25:20,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:25:20,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:25:20,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:25:20,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:25:20,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:25:18" (1/3) ... [2019-09-09 06:25:20,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549d06cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:25:20, skipping insertion in model container [2019-09-09 06:25:20,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:25:19" (2/3) ... [2019-09-09 06:25:20,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549d06cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:25:20, skipping insertion in model container [2019-09-09 06:25:20,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:25:20" (3/3) ... [2019-09-09 06:25:20,362 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label45.c [2019-09-09 06:25:20,372 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:25:20,382 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:25:20,400 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:25:20,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:25:20,429 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:25:20,430 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:25:20,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:25:20,431 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:25:20,431 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:25:20,432 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:25:20,432 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:25:20,454 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 06:25:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-09 06:25:20,471 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:20,473 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, 1, 1, 1, 1] [2019-09-09 06:25:20,475 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash 700982975, now seen corresponding path program 1 times [2019-09-09 06:25:20,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:20,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:20,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:20,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:20,534 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:20,936 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 06:25:20,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:20,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:25:20,939 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:20,949 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:25:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:25:20,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:25:20,971 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 06:25:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:21,843 INFO L93 Difference]: Finished difference Result 346 states and 499 transitions. [2019-09-09 06:25:21,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:25:21,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-09-09 06:25:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:21,871 INFO L225 Difference]: With dead ends: 346 [2019-09-09 06:25:21,872 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 06:25:21,874 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 06:25:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 06:25:21,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 06:25:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 06:25:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-09-09 06:25:21,985 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 123 [2019-09-09 06:25:21,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:21,986 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-09-09 06:25:21,987 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:25:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-09-09 06:25:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-09 06:25:21,998 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:21,998 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, 1, 1, 1, 1] [2019-09-09 06:25:21,999 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:22,002 INFO L82 PathProgramCache]: Analyzing trace with hash 538208968, now seen corresponding path program 1 times [2019-09-09 06:25:22,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:22,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:22,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:22,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:22,004 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:22,167 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 06:25:22,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:22,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:25:22,168 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:22,170 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:25:22,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:25:22,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:25:22,171 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-09-09 06:25:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:23,019 INFO L93 Difference]: Finished difference Result 568 states and 814 transitions. [2019-09-09 06:25:23,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:25:23,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-09-09 06:25:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:23,027 INFO L225 Difference]: With dead ends: 568 [2019-09-09 06:25:23,027 INFO L226 Difference]: Without dead ends: 568 [2019-09-09 06:25:23,028 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 06:25:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-09-09 06:25:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-09-09 06:25:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-09-09 06:25:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2019-09-09 06:25:23,068 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 133 [2019-09-09 06:25:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:23,069 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2019-09-09 06:25:23,069 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:25:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2019-09-09 06:25:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-09 06:25:23,072 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:23,072 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, 1, 1, 1, 1] [2019-09-09 06:25:23,072 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:23,073 INFO L82 PathProgramCache]: Analyzing trace with hash 129203270, now seen corresponding path program 1 times [2019-09-09 06:25:23,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:23,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:23,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:23,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:23,075 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:23,337 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 06:25:23,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:23,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 06:25:23,338 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:23,338 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 06:25:23,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 06:25:23,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:25:23,339 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 5 states. [2019-09-09 06:25:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:24,057 INFO L93 Difference]: Finished difference Result 655 states and 886 transitions. [2019-09-09 06:25:24,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 06:25:24,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-09-09 06:25:24,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:24,063 INFO L225 Difference]: With dead ends: 655 [2019-09-09 06:25:24,063 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 06:25:24,064 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 06:25:24,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 06:25:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 06:25:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 06:25:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 712 transitions. [2019-09-09 06:25:24,088 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 712 transitions. Word has length 134 [2019-09-09 06:25:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:24,088 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 712 transitions. [2019-09-09 06:25:24,088 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 06:25:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 712 transitions. [2019-09-09 06:25:24,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-09 06:25:24,091 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:24,091 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, 1, 1, 1, 1] [2019-09-09 06:25:24,091 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:24,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1311022732, now seen corresponding path program 1 times [2019-09-09 06:25:24,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:24,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:24,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:24,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:24,093 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:24,465 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 06:25:24,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:24,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 06:25:24,466 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:24,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 06:25:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 06:25:24,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:25:24,467 INFO L87 Difference]: Start difference. First operand 554 states and 712 transitions. Second operand 5 states. [2019-09-09 06:25:25,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:25,068 INFO L93 Difference]: Finished difference Result 636 states and 796 transitions. [2019-09-09 06:25:25,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 06:25:25,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2019-09-09 06:25:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:25,073 INFO L225 Difference]: With dead ends: 636 [2019-09-09 06:25:25,073 INFO L226 Difference]: Without dead ends: 554 [2019-09-09 06:25:25,074 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:25:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-09 06:25:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2019-09-09 06:25:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-09-09 06:25:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 708 transitions. [2019-09-09 06:25:25,092 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 708 transitions. Word has length 135 [2019-09-09 06:25:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:25,092 INFO L475 AbstractCegarLoop]: Abstraction has 554 states and 708 transitions. [2019-09-09 06:25:25,092 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 06:25:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 708 transitions. [2019-09-09 06:25:25,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-09 06:25:25,095 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:25,095 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, 1, 1, 1, 1] [2019-09-09 06:25:25,095 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:25,096 INFO L82 PathProgramCache]: Analyzing trace with hash -663161394, now seen corresponding path program 1 times [2019-09-09 06:25:25,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:25,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:25,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:25,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:25,097 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:25,191 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 06:25:25,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:25:25,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:25:25,192 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:25:25,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:25:25,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:25:25,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:25:25,193 INFO L87 Difference]: Start difference. First operand 554 states and 708 transitions. Second operand 3 states. [2019-09-09 06:25:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:25:25,690 INFO L93 Difference]: Finished difference Result 961 states and 1182 transitions. [2019-09-09 06:25:25,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:25:25,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-09-09 06:25:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:25:25,696 INFO L225 Difference]: With dead ends: 961 [2019-09-09 06:25:25,697 INFO L226 Difference]: Without dead ends: 961 [2019-09-09 06:25:25,697 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 06:25:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-09-09 06:25:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2019-09-09 06:25:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-09-09 06:25:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1180 transitions. [2019-09-09 06:25:25,724 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1180 transitions. Word has length 138 [2019-09-09 06:25:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:25:25,725 INFO L475 AbstractCegarLoop]: Abstraction has 959 states and 1180 transitions. [2019-09-09 06:25:25,725 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:25:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1180 transitions. [2019-09-09 06:25:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-09-09 06:25:25,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:25:25,729 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, 1, 1, 1, 1] [2019-09-09 06:25:25,730 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:25:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:25:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1614473983, now seen corresponding path program 1 times [2019-09-09 06:25:25,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:25:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:25,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:25:25,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:25:25,732 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:25:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:25:25,843 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 06:25:25,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 06:25:25,843 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 06:25:25,844 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 170 with the following transitions: [2019-09-09 06:25:25,847 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], [601], [609], [617], [625], [629], [631], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-09-09 06:25:25,918 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 06:25:25,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)