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/Problem03_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 07:55:34,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 07:55:34,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 07:55:34,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 07:55:34,957 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 07:55:34,976 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 07:55:34,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 07:55:34,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 07:55:34,977 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 07:55:34,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 07:55:34,978 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 07:55:34,978 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 07:55:34,979 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 07:55:34,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 07:55:34,979 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 07:55:34,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 07:55:34,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 07:55:34,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 07:55:34,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 07:55:34,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 07:55:34,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 07:55:34,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 07:55:34,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 07:55:34,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 07:55:34,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 07:55:34,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 07:55:34,982 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 07:55:34,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 07:55:34,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 07:55:34,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 07:55:34,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 07:55:34,983 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 07:55:34,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 07:55:34,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 07:55:34,984 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 07:55:35,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 07:55:35,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 07:55:35,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 07:55:35,030 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 07:55:35,031 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 07:55:35,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2019-09-09 07:55:35,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6af16b01/f684c2688ec542e5b227f8b0ea3396a0/FLAG933aa33e6 [2019-09-09 07:55:35,721 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 07:55:35,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2019-09-09 07:55:35,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6af16b01/f684c2688ec542e5b227f8b0ea3396a0/FLAG933aa33e6 [2019-09-09 07:55:35,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6af16b01/f684c2688ec542e5b227f8b0ea3396a0 [2019-09-09 07:55:35,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 07:55:35,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 07:55:35,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 07:55:35,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 07:55:35,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 07:55:35,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:55:35" (1/1) ... [2019-09-09 07:55:35,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7e4e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:35, skipping insertion in model container [2019-09-09 07:55:35,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:55:35" (1/1) ... [2019-09-09 07:55:35,916 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 07:55:36,007 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 07:55:36,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:55:36,906 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 07:55:37,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:55:37,174 INFO L192 MainTranslator]: Completed translation [2019-09-09 07:55:37,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37 WrapperNode [2019-09-09 07:55:37,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 07:55:37,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 07:55:37,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 07:55:37,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 07:55:37,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (1/1) ... [2019-09-09 07:55:37,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (1/1) ... [2019-09-09 07:55:37,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (1/1) ... [2019-09-09 07:55:37,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (1/1) ... [2019-09-09 07:55:37,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (1/1) ... [2019-09-09 07:55:37,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (1/1) ... [2019-09-09 07:55:37,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (1/1) ... [2019-09-09 07:55:37,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 07:55:37,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 07:55:37,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 07:55:37,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 07:55:37,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (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 07:55:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 07:55:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 07:55:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 07:55:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 07:55:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 07:55:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 07:55:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 07:55:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 07:55:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 07:55:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 07:55:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 07:55:39,462 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 07:55:39,462 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 07:55:39,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:55:39 BoogieIcfgContainer [2019-09-09 07:55:39,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 07:55:39,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 07:55:39,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 07:55:39,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 07:55:39,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:55:35" (1/3) ... [2019-09-09 07:55:39,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e4ad06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:55:39, skipping insertion in model container [2019-09-09 07:55:39,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:55:37" (2/3) ... [2019-09-09 07:55:39,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e4ad06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:55:39, skipping insertion in model container [2019-09-09 07:55:39,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:55:39" (3/3) ... [2019-09-09 07:55:39,484 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label43.c [2019-09-09 07:55:39,497 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 07:55:39,509 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 07:55:39,530 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 07:55:39,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 07:55:39,563 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 07:55:39,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 07:55:39,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 07:55:39,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 07:55:39,564 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 07:55:39,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 07:55:39,564 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 07:55:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-09 07:55:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-09-09 07:55:39,632 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:55:39,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:39,637 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:55:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:55:39,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1933795261, now seen corresponding path program 1 times [2019-09-09 07:55:39,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:55:39,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:39,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:55:39,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:39,698 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:55:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:55:40,458 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 07:55:40,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:55:40,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 07:55:40,461 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:55:40,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 07:55:40,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 07:55:40,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:55:40,487 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-09 07:55:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:55:42,610 INFO L93 Difference]: Finished difference Result 757 states and 1248 transitions. [2019-09-09 07:55:42,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 07:55:42,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-09-09 07:55:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:55:42,637 INFO L225 Difference]: With dead ends: 757 [2019-09-09 07:55:42,638 INFO L226 Difference]: Without dead ends: 685 [2019-09-09 07:55:42,640 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:55:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-09-09 07:55:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 465. [2019-09-09 07:55:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-09-09 07:55:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 750 transitions. [2019-09-09 07:55:42,729 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 750 transitions. Word has length 156 [2019-09-09 07:55:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:55:42,730 INFO L475 AbstractCegarLoop]: Abstraction has 465 states and 750 transitions. [2019-09-09 07:55:42,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 07:55:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 750 transitions. [2019-09-09 07:55:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-09-09 07:55:42,737 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:55:42,738 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:55:42,738 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:55:42,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:55:42,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2055560806, now seen corresponding path program 1 times [2019-09-09 07:55:42,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:55:42,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:42,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:55:42,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:42,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:55:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:55:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:55:42,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:55:42,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 07:55:42,962 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:55:42,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 07:55:42,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 07:55:42,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 07:55:42,965 INFO L87 Difference]: Start difference. First operand 465 states and 750 transitions. Second operand 6 states. [2019-09-09 07:55:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:55:44,624 INFO L93 Difference]: Finished difference Result 941 states and 1551 transitions. [2019-09-09 07:55:44,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 07:55:44,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2019-09-09 07:55:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:55:44,638 INFO L225 Difference]: With dead ends: 941 [2019-09-09 07:55:44,639 INFO L226 Difference]: Without dead ends: 941 [2019-09-09 07:55:44,640 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 07:55:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2019-09-09 07:55:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 900. [2019-09-09 07:55:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2019-09-09 07:55:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1442 transitions. [2019-09-09 07:55:44,709 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1442 transitions. Word has length 165 [2019-09-09 07:55:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:55:44,709 INFO L475 AbstractCegarLoop]: Abstraction has 900 states and 1442 transitions. [2019-09-09 07:55:44,710 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 07:55:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1442 transitions. [2019-09-09 07:55:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-09-09 07:55:44,718 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:55:44,718 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:55:44,722 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:55:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:55:44,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1409737428, now seen corresponding path program 1 times [2019-09-09 07:55:44,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:55:44,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:44,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:55:44,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:44,724 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:55:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:55:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:55:44,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:55:44,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 07:55:44,874 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:55:44,875 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 07:55:44,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 07:55:44,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 07:55:44,877 INFO L87 Difference]: Start difference. First operand 900 states and 1442 transitions. Second operand 5 states. [2019-09-09 07:55:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:55:46,270 INFO L93 Difference]: Finished difference Result 1798 states and 2840 transitions. [2019-09-09 07:55:46,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 07:55:46,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2019-09-09 07:55:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:55:46,284 INFO L225 Difference]: With dead ends: 1798 [2019-09-09 07:55:46,284 INFO L226 Difference]: Without dead ends: 1798 [2019-09-09 07:55:46,285 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 07:55:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2019-09-09 07:55:46,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1763. [2019-09-09 07:55:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2019-09-09 07:55:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2724 transitions. [2019-09-09 07:55:46,357 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2724 transitions. Word has length 166 [2019-09-09 07:55:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:55:46,358 INFO L475 AbstractCegarLoop]: Abstraction has 1763 states and 2724 transitions. [2019-09-09 07:55:46,358 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 07:55:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2724 transitions. [2019-09-09 07:55:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-09 07:55:46,367 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:55:46,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:46,368 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:55:46,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:55:46,369 INFO L82 PathProgramCache]: Analyzing trace with hash 986588969, now seen corresponding path program 1 times [2019-09-09 07:55:46,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:55:46,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:46,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:55:46,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:46,371 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:55:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:55:46,666 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 07:55:46,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:55:46,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 07:55:46,668 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:55:46,668 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 07:55:46,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 07:55:46,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:55:46,670 INFO L87 Difference]: Start difference. First operand 1763 states and 2724 transitions. Second operand 3 states. [2019-09-09 07:55:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:55:47,707 INFO L93 Difference]: Finished difference Result 3251 states and 4946 transitions. [2019-09-09 07:55:47,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 07:55:47,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-09-09 07:55:47,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:55:47,729 INFO L225 Difference]: With dead ends: 3251 [2019-09-09 07:55:47,729 INFO L226 Difference]: Without dead ends: 3251 [2019-09-09 07:55:47,730 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 07:55:47,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2019-09-09 07:55:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 3244. [2019-09-09 07:55:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3244 states. [2019-09-09 07:55:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 4933 transitions. [2019-09-09 07:55:47,826 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 4933 transitions. Word has length 168 [2019-09-09 07:55:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:55:47,826 INFO L475 AbstractCegarLoop]: Abstraction has 3244 states and 4933 transitions. [2019-09-09 07:55:47,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 07:55:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 4933 transitions. [2019-09-09 07:55:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-09-09 07:55:47,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:55:47,837 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, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:55:47,837 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:55:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:55:47,838 INFO L82 PathProgramCache]: Analyzing trace with hash 642664422, now seen corresponding path program 1 times [2019-09-09 07:55:47,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:55:47,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:47,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:55:47,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:47,839 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:55:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:55:47,969 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 07:55:47,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:55:47,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 07:55:47,970 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:55:47,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 07:55:47,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 07:55:47,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 07:55:47,972 INFO L87 Difference]: Start difference. First operand 3244 states and 4933 transitions. Second operand 6 states. [2019-09-09 07:55:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:55:49,569 INFO L93 Difference]: Finished difference Result 6377 states and 10120 transitions. [2019-09-09 07:55:49,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 07:55:49,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2019-09-09 07:55:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:55:49,619 INFO L225 Difference]: With dead ends: 6377 [2019-09-09 07:55:49,620 INFO L226 Difference]: Without dead ends: 6377 [2019-09-09 07:55:49,621 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 07:55:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2019-09-09 07:55:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 6298. [2019-09-09 07:55:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6298 states. [2019-09-09 07:55:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6298 states to 6298 states and 9475 transitions. [2019-09-09 07:55:49,850 INFO L78 Accepts]: Start accepts. Automaton has 6298 states and 9475 transitions. Word has length 175 [2019-09-09 07:55:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:55:49,850 INFO L475 AbstractCegarLoop]: Abstraction has 6298 states and 9475 transitions. [2019-09-09 07:55:49,850 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 07:55:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6298 states and 9475 transitions. [2019-09-09 07:55:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-09-09 07:55:49,868 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:55:49,869 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:55:49,869 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:55:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:55:49,870 INFO L82 PathProgramCache]: Analyzing trace with hash -452438846, now seen corresponding path program 1 times [2019-09-09 07:55:49,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:55:49,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:49,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:55:49,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:55:49,871 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:55:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:55:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:55:49,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 07:55:49,992 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 07:55:49,993 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 179 with the following transitions: [2019-09-09 07:55:49,997 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [717], [719], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-09-09 07:55:50,104 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 07:55:50,107 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)