java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:10:03,232 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:10:03,235 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:10:03,247 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:10:03,247 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:10:03,248 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:10:03,250 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:10:03,251 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:10:03,253 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:10:03,254 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:10:03,255 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:10:03,255 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:10:03,256 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:10:03,257 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:10:03,258 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:10:03,259 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:10:03,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:10:03,262 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:10:03,264 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:10:03,266 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:10:03,267 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:10:03,268 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:10:03,273 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:10:03,273 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:10:03,274 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:10:03,278 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:10:03,279 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:10:03,280 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:10:03,281 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:10:03,282 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:10:03,282 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:10:03,283 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 17:10:03,283 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:10:03,283 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:10:03,284 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:10:03,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:10:03,291 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:10:03,321 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:10:03,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:10:03,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:10:03,323 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:10:03,324 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:10:03,324 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:10:03,324 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:10:03,325 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:10:03,325 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:10:03,325 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:10:03,325 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:10:03,325 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:10:03,325 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:10:03,329 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:10:03,329 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:10:03,329 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:10:03,329 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:10:03,330 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:10:03,330 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:10:03,330 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:10:03,330 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:10:03,330 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:10:03,331 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:10:03,332 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:10:03,332 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:10:03,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:10:03,333 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:10:03,333 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:10:03,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:10:03,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:10:03,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:10:03,430 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:10:03,430 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:10:03,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-10-24 17:10:03,495 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a13795ff9/79d678f34ef548d898e1b880b84fcdd7/FLAG53d9a9a10 [2018-10-24 17:10:04,475 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:10:04,477 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-10-24 17:10:04,524 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a13795ff9/79d678f34ef548d898e1b880b84fcdd7/FLAG53d9a9a10 [2018-10-24 17:10:04,540 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a13795ff9/79d678f34ef548d898e1b880b84fcdd7 [2018-10-24 17:10:04,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:10:04,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:10:04,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:10:04,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:10:04,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:10:04,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:10:04" (1/1) ... [2018-10-24 17:10:04,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:04, skipping insertion in model container [2018-10-24 17:10:04,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:10:04" (1/1) ... [2018-10-24 17:10:04,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:10:04,828 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:10:06,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:10:06,779 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:10:07,825 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:10:07,881 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:10:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07 WrapperNode [2018-10-24 17:10:07,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:10:07,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:10:07,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:10:07,885 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:10:07,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:07,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:10:09,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:10:09,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:10:09,137 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:10:09,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... [2018-10-24 17:10:09,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:10:09,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:10:09,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:10:09,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:10:09,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 17:10:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:10:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:10:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:10:27,869 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:10:27,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:27 BoogieIcfgContainer [2018-10-24 17:10:27,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:10:27,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:10:27,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:10:27,876 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:10:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:10:04" (1/3) ... [2018-10-24 17:10:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37217344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:27, skipping insertion in model container [2018-10-24 17:10:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:07" (2/3) ... [2018-10-24 17:10:27,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37217344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:27, skipping insertion in model container [2018-10-24 17:10:27,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:27" (3/3) ... [2018-10-24 17:10:27,880 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label54_true-unreach-call.c [2018-10-24 17:10:27,890 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:10:27,902 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:10:27,921 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:10:27,972 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:10:27,972 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:10:27,973 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:10:27,973 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:10:27,973 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:10:27,973 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:10:27,973 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:10:27,973 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:10:27,973 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:10:28,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:10:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 17:10:28,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:28,038 INFO L375 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] [2018-10-24 17:10:28,040 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:28,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:28,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2101344302, now seen corresponding path program 1 times [2018-10-24 17:10:28,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:28,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:28,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:28,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:28,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:28,812 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:10:28,950 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:10:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:10:29,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:29,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:10:29,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:10:29,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:10:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:10:29,146 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 6 states. [2018-10-24 17:10:29,356 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 17:11:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:19,652 INFO L93 Difference]: Finished difference Result 9077 states and 17599 transitions. [2018-10-24 17:11:19,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:11:19,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2018-10-24 17:11:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:19,720 INFO L225 Difference]: With dead ends: 9077 [2018-10-24 17:11:19,720 INFO L226 Difference]: Without dead ends: 7315 [2018-10-24 17:11:19,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:11:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2018-10-24 17:11:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 5898. [2018-10-24 17:11:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5898 states. [2018-10-24 17:11:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8690 transitions. [2018-10-24 17:11:19,988 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8690 transitions. Word has length 65 [2018-10-24 17:11:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:19,989 INFO L481 AbstractCegarLoop]: Abstraction has 5898 states and 8690 transitions. [2018-10-24 17:11:19,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:11:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8690 transitions. [2018-10-24 17:11:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-24 17:11:20,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:20,011 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:11:20,012 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:20,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:20,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1341722408, now seen corresponding path program 1 times [2018-10-24 17:11:20,016 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:20,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:20,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:20,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:20,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-24 17:11:20,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:11:20,682 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:11:20,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:20,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:11:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:21,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:11:21,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 5 [2018-10-24 17:11:21,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:11:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:11:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:11:21,216 INFO L87 Difference]: Start difference. First operand 5898 states and 8690 transitions. Second operand 5 states. [2018-10-24 17:12:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:06,872 INFO L93 Difference]: Finished difference Result 24240 states and 39207 transitions. [2018-10-24 17:12:06,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:12:06,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2018-10-24 17:12:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:06,942 INFO L225 Difference]: With dead ends: 24240 [2018-10-24 17:12:06,942 INFO L226 Difference]: Without dead ends: 14241 [2018-10-24 17:12:06,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:12:06,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14241 states. [2018-10-24 17:12:07,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14241 to 11471. [2018-10-24 17:12:07,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11471 states. [2018-10-24 17:12:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11471 states to 11471 states and 15056 transitions. [2018-10-24 17:12:07,204 INFO L78 Accepts]: Start accepts. Automaton has 11471 states and 15056 transitions. Word has length 301 [2018-10-24 17:12:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:07,205 INFO L481 AbstractCegarLoop]: Abstraction has 11471 states and 15056 transitions. [2018-10-24 17:12:07,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:12:07,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11471 states and 15056 transitions. [2018-10-24 17:12:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-10-24 17:12:07,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:07,221 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:12:07,221 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:07,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1357005909, now seen corresponding path program 1 times [2018-10-24 17:12:07,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:07,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:07,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:07,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:07,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:08,253 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:12:08,820 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:12:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 158 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 17:12:09,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:12:09,437 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:12:09,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:09,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:12:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:12:09,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:12:09,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 17:12:09,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:12:09,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:12:09,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:12:09,908 INFO L87 Difference]: Start difference. First operand 11471 states and 15056 transitions. Second operand 7 states. [2018-10-24 17:12:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:38,286 INFO L93 Difference]: Finished difference Result 54366 states and 73504 transitions. [2018-10-24 17:12:38,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 17:12:38,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 612 [2018-10-24 17:12:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:38,383 INFO L225 Difference]: With dead ends: 54366 [2018-10-24 17:12:38,384 INFO L226 Difference]: Without dead ends: 42897 [2018-10-24 17:12:38,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 614 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:12:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42897 states. [2018-10-24 17:12:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42897 to 40154. [2018-10-24 17:12:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40154 states. [2018-10-24 17:12:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40154 states to 40154 states and 48960 transitions. [2018-10-24 17:12:39,041 INFO L78 Accepts]: Start accepts. Automaton has 40154 states and 48960 transitions. Word has length 612 [2018-10-24 17:12:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:39,042 INFO L481 AbstractCegarLoop]: Abstraction has 40154 states and 48960 transitions. [2018-10-24 17:12:39,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:12:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 40154 states and 48960 transitions. [2018-10-24 17:12:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-10-24 17:12:39,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:39,066 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:12:39,067 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:39,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash 809017416, now seen corresponding path program 1 times [2018-10-24 17:12:39,067 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:39,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:39,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:39,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:39,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 125 proven. 4 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-24 17:12:40,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:12:40,423 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-24 17:12:40,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:12:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:40,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:12:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:12:41,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:12:41,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:12:41,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:12:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:12:41,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:41,257 INFO L87 Difference]: Start difference. First operand 40154 states and 48960 transitions. Second operand 4 states. [2018-10-24 17:12:58,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:58,991 INFO L93 Difference]: Finished difference Result 142025 states and 175150 transitions. [2018-10-24 17:12:58,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:12:58,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 709 [2018-10-24 17:12:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:59,185 INFO L225 Difference]: With dead ends: 142025 [2018-10-24 17:12:59,186 INFO L226 Difference]: Without dead ends: 103239 [2018-10-24 17:12:59,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103239 states. [2018-10-24 17:13:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103239 to 67464. [2018-10-24 17:13:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67464 states. [2018-10-24 17:13:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67464 states to 67464 states and 80182 transitions. [2018-10-24 17:13:00,248 INFO L78 Accepts]: Start accepts. Automaton has 67464 states and 80182 transitions. Word has length 709 [2018-10-24 17:13:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:00,249 INFO L481 AbstractCegarLoop]: Abstraction has 67464 states and 80182 transitions. [2018-10-24 17:13:00,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:13:00,250 INFO L276 IsEmpty]: Start isEmpty. Operand 67464 states and 80182 transitions. [2018-10-24 17:13:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2018-10-24 17:13:00,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:00,271 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:00,272 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:00,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1416070291, now seen corresponding path program 1 times [2018-10-24 17:13:00,272 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:00,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:00,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:00,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:00,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 256 proven. 72 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 17:13:01,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:13:01,419 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:13:01,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:01,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:13:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-24 17:13:02,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:13:02,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 17:13:02,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:13:02,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:13:02,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:13:02,632 INFO L87 Difference]: Start difference. First operand 67464 states and 80182 transitions. Second operand 5 states. [2018-10-24 17:13:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:17,145 INFO L93 Difference]: Finished difference Result 184112 states and 219424 transitions. [2018-10-24 17:13:17,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:13:17,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 716 [2018-10-24 17:13:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:17,330 INFO L225 Difference]: With dead ends: 184112 [2018-10-24 17:13:17,331 INFO L226 Difference]: Without dead ends: 118016 [2018-10-24 17:13:17,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 715 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:13:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118016 states. [2018-10-24 17:13:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118016 to 118010. [2018-10-24 17:13:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118010 states. [2018-10-24 17:13:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118010 states to 118010 states and 134786 transitions. [2018-10-24 17:13:18,978 INFO L78 Accepts]: Start accepts. Automaton has 118010 states and 134786 transitions. Word has length 716 [2018-10-24 17:13:18,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:18,979 INFO L481 AbstractCegarLoop]: Abstraction has 118010 states and 134786 transitions. [2018-10-24 17:13:18,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:13:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 118010 states and 134786 transitions. [2018-10-24 17:13:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2018-10-24 17:13:19,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:19,014 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:19,014 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:19,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:19,015 INFO L82 PathProgramCache]: Analyzing trace with hash -453178107, now seen corresponding path program 1 times [2018-10-24 17:13:19,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:19,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:19,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:19,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:19,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-24 17:13:20,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:13:20,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:13:20,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:13:20,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:13:20,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:20,210 INFO L87 Difference]: Start difference. First operand 118010 states and 134786 transitions. Second operand 4 states. [2018-10-24 17:13:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:35,152 INFO L93 Difference]: Finished difference Result 327661 states and 373836 transitions. [2018-10-24 17:13:35,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:13:35,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 929 [2018-10-24 17:13:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:35,434 INFO L225 Difference]: With dead ends: 327661 [2018-10-24 17:13:35,435 INFO L226 Difference]: Without dead ends: 211019 [2018-10-24 17:13:35,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211019 states. [2018-10-24 17:13:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211019 to 204077. [2018-10-24 17:13:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204077 states. [2018-10-24 17:13:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204077 states to 204077 states and 228018 transitions. [2018-10-24 17:13:37,780 INFO L78 Accepts]: Start accepts. Automaton has 204077 states and 228018 transitions. Word has length 929 [2018-10-24 17:13:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:37,781 INFO L481 AbstractCegarLoop]: Abstraction has 204077 states and 228018 transitions. [2018-10-24 17:13:37,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:13:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 204077 states and 228018 transitions. [2018-10-24 17:13:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2018-10-24 17:13:37,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:37,807 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:37,807 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:37,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1730035798, now seen corresponding path program 1 times [2018-10-24 17:13:37,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:37,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:37,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:37,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:37,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 562 proven. 459 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-10-24 17:13:41,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:13:41,498 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:13:41,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:41,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:13:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2018-10-24 17:13:42,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:13:42,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-24 17:13:42,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 17:13:42,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 17:13:42,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:13:42,810 INFO L87 Difference]: Start difference. First operand 204077 states and 228018 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 17:13:58,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 17:13:58,664 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:13:58,669 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:13:58,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:13:58 BoogieIcfgContainer [2018-10-24 17:13:58,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:13:58,670 INFO L168 Benchmark]: Toolchain (without parser) took 234117.90 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -753.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 17:13:58,671 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:13:58,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3327.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:58,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 1253.62 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:58,674 INFO L168 Benchmark]: Boogie Preprocessor took 722.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.6 MB). Peak memory consumption was 109.6 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:58,674 INFO L168 Benchmark]: RCFGBuilder took 18011.88 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.0 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -392.1 MB). Peak memory consumption was 825.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:58,675 INFO L168 Benchmark]: TraceAbstraction took 210797.57 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 313.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:13:58,682 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3327.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1253.62 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 722.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.6 MB). Peak memory consumption was 109.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18011.88 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.0 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -392.1 MB). Peak memory consumption was 825.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210797.57 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 313.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 208]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 208). Cancelled while BasicCegarLoop was constructing difference of abstraction (204077states) and FLOYD_HOARE automaton (currently 10 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (127385 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 210.7s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 188.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5659 SDtfs, 47819 SDslu, 3410 SDs, 0 SdLazy, 80796 SolverSat, 24029 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 160.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3420 GetRequests, 3370 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204077occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 49653 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 7710 NumberOfCodeBlocks, 7710 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 7698 ConstructedInterpolants, 0 QuantifiedInterpolants, 18998536 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3909 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 4688/5233 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown