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/Problem13_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:19:47,260 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:19:47,262 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:19:47,275 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:19:47,276 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:19:47,279 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:19:47,281 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:19:47,283 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:19:47,284 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:19:47,285 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:19:47,286 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:19:47,286 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:19:47,287 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:19:47,288 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:19:47,289 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:19:47,290 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:19:47,291 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:19:47,293 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:19:47,295 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:19:47,297 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:19:47,298 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:19:47,299 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:19:47,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:19:47,302 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:19:47,302 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:19:47,303 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:19:47,304 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:19:47,305 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:19:47,306 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:19:47,309 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:19:47,312 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:19:47,313 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:19:47,313 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:19:47,313 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:19:47,314 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:19:47,315 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:19:47,317 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 16:19:47,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:19:47,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:19:47,345 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:19:47,345 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:19:47,346 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:19:47,346 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:19:47,346 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:19:47,347 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:19:47,347 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:19:47,347 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:19:47,347 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:19:47,347 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:19:47,348 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:19:47,348 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:19:47,348 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:19:47,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:19:47,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:19:47,349 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:19:47,350 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:19:47,350 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:47,350 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:19:47,350 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:19:47,350 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:19:47,351 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:19:47,351 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:19:47,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:19:47,351 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:19:47,351 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:19:47,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:19:47,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:19:47,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:19:47,421 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:19:47,422 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:19:47,422 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-10-24 16:19:47,487 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fedd8c3b/f76306d175af4d7db91dc302fc0e1dde/FLAG999ebf0e2 [2018-10-24 16:19:48,247 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:19:48,248 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-10-24 16:19:48,287 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fedd8c3b/f76306d175af4d7db91dc302fc0e1dde/FLAG999ebf0e2 [2018-10-24 16:19:48,309 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fedd8c3b/f76306d175af4d7db91dc302fc0e1dde [2018-10-24 16:19:48,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:19:48,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:19:48,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:48,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:19:48,331 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:19:48,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:48" (1/1) ... [2018-10-24 16:19:48,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce3d116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:48, skipping insertion in model container [2018-10-24 16:19:48,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:48" (1/1) ... [2018-10-24 16:19:48,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:19:48,507 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:19:49,943 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:49,948 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:19:50,731 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:50,764 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:19:50,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50 WrapperNode [2018-10-24 16:19:50,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:50,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:50,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:19:50,766 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:19:50,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:50,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:51,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:51,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:19:51,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:19:51,519 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:19:51,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:51,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:51,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:51,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:51,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:51,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:51,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (1/1) ... [2018-10-24 16:19:52,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:19:52,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:19:52,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:19:52,003 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:19:52,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (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 16:19:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:19:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:19:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:20:05,912 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:20:05,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:20:05 BoogieIcfgContainer [2018-10-24 16:20:05,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:20:05,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:20:05,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:20:05,917 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:20:05,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:19:48" (1/3) ... [2018-10-24 16:20:05,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eabc141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:20:05, skipping insertion in model container [2018-10-24 16:20:05,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:50" (2/3) ... [2018-10-24 16:20:05,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eabc141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:20:05, skipping insertion in model container [2018-10-24 16:20:05,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:20:05" (3/3) ... [2018-10-24 16:20:05,921 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14_true-unreach-call.c [2018-10-24 16:20:05,931 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:20:05,941 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:20:05,959 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:20:06,006 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:20:06,007 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:20:06,007 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:20:06,007 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:20:06,007 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:20:06,007 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:20:06,007 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:20:06,008 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:20:06,008 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:20:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:20:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 16:20:06,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:06,060 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] [2018-10-24 16:20:06,062 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:06,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:06,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1057203130, now seen corresponding path program 1 times [2018-10-24 16:20:06,070 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:06,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:06,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:06,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:06,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:06,524 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 16:20:06,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:06,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:06,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:06,552 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:20:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:23,246 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 16:20:23,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:23,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-24 16:20:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:23,299 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 16:20:23,299 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 16:20:23,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 16:20:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 16:20:23,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 16:20:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 16:20:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 16:20:23,467 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 42 [2018-10-24 16:20:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:23,468 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 16:20:23,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 16:20:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 16:20:23,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:23,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:23,474 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:23,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:23,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1784623294, now seen corresponding path program 1 times [2018-10-24 16:20:23,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:23,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:23,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:23,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:23,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:24,609 WARN L179 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:20:24,773 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 4 [2018-10-24 16:20:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:24,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:24,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:24,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:24,939 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 16:20:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:41,888 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 16:20:41,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:20:41,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-10-24 16:20:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:41,914 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 16:20:41,915 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 16:20:41,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:20:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 16:20:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 16:20:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 16:20:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 16:20:42,021 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 108 [2018-10-24 16:20:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:42,022 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 16:20:42,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 16:20:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 16:20:42,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:42,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:42,030 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:42,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:42,031 INFO L82 PathProgramCache]: Analyzing trace with hash 348733509, now seen corresponding path program 1 times [2018-10-24 16:20:42,031 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:42,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:42,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:42,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:42,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-24 16:20:42,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:42,509 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 16:20:42,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:42,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-24 16:20:42,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:42,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:20:42,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:42,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:42,765 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-24 16:20:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:55,421 INFO L93 Difference]: Finished difference Result 15791 states and 24940 transitions. [2018-10-24 16:20:55,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:55,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2018-10-24 16:20:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:55,481 INFO L225 Difference]: With dead ends: 15791 [2018-10-24 16:20:55,481 INFO L226 Difference]: Without dead ends: 11464 [2018-10-24 16:20:55,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 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 16:20:55,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2018-10-24 16:20:55,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11436. [2018-10-24 16:20:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-24 16:20:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15966 transitions. [2018-10-24 16:20:55,738 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15966 transitions. Word has length 168 [2018-10-24 16:20:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:55,739 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15966 transitions. [2018-10-24 16:20:55,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:55,740 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15966 transitions. [2018-10-24 16:20:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-24 16:20:55,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:55,746 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:20:55,750 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:55,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:55,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1865837237, now seen corresponding path program 1 times [2018-10-24 16:20:55,750 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:55,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:55,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:55,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:55,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 79 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 16:20:56,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:56,141 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 16:20:56,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:56,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:56,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:56,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:20:56,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:56,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:56,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:56,330 INFO L87 Difference]: Start difference. First operand 11436 states and 15966 transitions. Second operand 4 states. [2018-10-24 16:21:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:06,274 INFO L93 Difference]: Finished difference Result 37884 states and 53982 transitions. [2018-10-24 16:21:06,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:06,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-24 16:21:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:06,360 INFO L225 Difference]: With dead ends: 37884 [2018-10-24 16:21:06,360 INFO L226 Difference]: Without dead ends: 27238 [2018-10-24 16:21:06,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 248 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 16:21:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2018-10-24 16:21:06,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 20891. [2018-10-24 16:21:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20891 states. [2018-10-24 16:21:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20891 states to 20891 states and 27229 transitions. [2018-10-24 16:21:06,750 INFO L78 Accepts]: Start accepts. Automaton has 20891 states and 27229 transitions. Word has length 248 [2018-10-24 16:21:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:06,750 INFO L481 AbstractCegarLoop]: Abstraction has 20891 states and 27229 transitions. [2018-10-24 16:21:06,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 20891 states and 27229 transitions. [2018-10-24 16:21:06,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-24 16:21:06,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:06,759 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:21:06,760 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:06,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:06,760 INFO L82 PathProgramCache]: Analyzing trace with hash 572898249, now seen corresponding path program 1 times [2018-10-24 16:21:06,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:06,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:06,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:06,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:06,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 16:21:07,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:07,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:21:07,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:21:07,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:21:07,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:07,081 INFO L87 Difference]: Start difference. First operand 20891 states and 27229 transitions. Second operand 3 states. [2018-10-24 16:21:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:14,126 INFO L93 Difference]: Finished difference Result 59901 states and 78777 transitions. [2018-10-24 16:21:14,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:21:14,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-10-24 16:21:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:14,211 INFO L225 Difference]: With dead ends: 59901 [2018-10-24 16:21:14,212 INFO L226 Difference]: Without dead ends: 39800 [2018-10-24 16:21:14,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39800 states. [2018-10-24 16:21:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39800 to 39799. [2018-10-24 16:21:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39799 states. [2018-10-24 16:21:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39799 states to 39799 states and 48745 transitions. [2018-10-24 16:21:14,751 INFO L78 Accepts]: Start accepts. Automaton has 39799 states and 48745 transitions. Word has length 274 [2018-10-24 16:21:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:14,752 INFO L481 AbstractCegarLoop]: Abstraction has 39799 states and 48745 transitions. [2018-10-24 16:21:14,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:21:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 39799 states and 48745 transitions. [2018-10-24 16:21:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-10-24 16:21:14,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:14,770 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:14,770 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:14,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash -355408056, now seen corresponding path program 1 times [2018-10-24 16:21:14,771 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:14,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:14,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:14,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:14,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:15,360 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 16:21:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 288 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-24 16:21:15,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:15,543 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:21:15,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:15,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 16:21:15,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:15,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:21:15,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:15,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:15,828 INFO L87 Difference]: Start difference. First operand 39799 states and 48745 transitions. Second operand 4 states. [2018-10-24 16:21:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:24,366 INFO L93 Difference]: Finished difference Result 96185 states and 115633 transitions. [2018-10-24 16:21:24,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:24,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 371 [2018-10-24 16:21:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:24,440 INFO L225 Difference]: With dead ends: 96185 [2018-10-24 16:21:24,441 INFO L226 Difference]: Without dead ends: 57176 [2018-10-24 16:21:24,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57176 states. [2018-10-24 16:21:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57176 to 48469. [2018-10-24 16:21:25,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48469 states. [2018-10-24 16:21:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48469 states to 48469 states and 58131 transitions. [2018-10-24 16:21:25,056 INFO L78 Accepts]: Start accepts. Automaton has 48469 states and 58131 transitions. Word has length 371 [2018-10-24 16:21:25,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:25,057 INFO L481 AbstractCegarLoop]: Abstraction has 48469 states and 58131 transitions. [2018-10-24 16:21:25,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand 48469 states and 58131 transitions. [2018-10-24 16:21:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-24 16:21:25,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:25,073 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:25,074 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:25,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:25,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1810747960, now seen corresponding path program 1 times [2018-10-24 16:21:25,074 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:25,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:25,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:25,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:25,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 16:21:25,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:25,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:25,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:25,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:25,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:25,520 INFO L87 Difference]: Start difference. First operand 48469 states and 58131 transitions. Second operand 4 states. [2018-10-24 16:21:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:38,464 INFO L93 Difference]: Finished difference Result 125335 states and 152252 transitions. [2018-10-24 16:21:38,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:38,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2018-10-24 16:21:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:38,562 INFO L225 Difference]: With dead ends: 125335 [2018-10-24 16:21:38,562 INFO L226 Difference]: Without dead ends: 77656 [2018-10-24 16:21:38,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 16:21:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77656 states. [2018-10-24 16:21:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77656 to 75262. [2018-10-24 16:21:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75262 states. [2018-10-24 16:21:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75262 states to 75262 states and 88109 transitions. [2018-10-24 16:21:39,403 INFO L78 Accepts]: Start accepts. Automaton has 75262 states and 88109 transitions. Word has length 377 [2018-10-24 16:21:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:39,403 INFO L481 AbstractCegarLoop]: Abstraction has 75262 states and 88109 transitions. [2018-10-24 16:21:39,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 75262 states and 88109 transitions. [2018-10-24 16:21:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-24 16:21:39,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:39,422 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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 16:21:39,423 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:39,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:39,423 INFO L82 PathProgramCache]: Analyzing trace with hash 299456529, now seen corresponding path program 1 times [2018-10-24 16:21:39,423 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:39,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:39,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:39,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:39,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 16:21:39,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:39,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:21:39,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:39,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:39,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:39,812 INFO L87 Difference]: Start difference. First operand 75262 states and 88109 transitions. Second operand 4 states. [2018-10-24 16:21:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:48,641 INFO L93 Difference]: Finished difference Result 160764 states and 187592 transitions. [2018-10-24 16:21:48,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:48,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2018-10-24 16:21:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:48,724 INFO L225 Difference]: With dead ends: 160764 [2018-10-24 16:21:48,724 INFO L226 Difference]: Without dead ends: 74414 [2018-10-24 16:21:48,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74414 states. [2018-10-24 16:21:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74414 to 64957. [2018-10-24 16:21:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64957 states. [2018-10-24 16:21:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64957 states to 64957 states and 74656 transitions. [2018-10-24 16:21:49,383 INFO L78 Accepts]: Start accepts. Automaton has 64957 states and 74656 transitions. Word has length 400 [2018-10-24 16:21:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:49,383 INFO L481 AbstractCegarLoop]: Abstraction has 64957 states and 74656 transitions. [2018-10-24 16:21:49,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 64957 states and 74656 transitions. [2018-10-24 16:21:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-10-24 16:21:49,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:49,397 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:49,398 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:49,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash -161767708, now seen corresponding path program 1 times [2018-10-24 16:21:49,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:49,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:49,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:49,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:49,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-10-24 16:21:49,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:49,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:49,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:49,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:49,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:49,955 INFO L87 Difference]: Start difference. First operand 64957 states and 74656 transitions. Second operand 5 states. [2018-10-24 16:22:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:12,796 INFO L93 Difference]: Finished difference Result 243659 states and 281129 transitions. [2018-10-24 16:22:12,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:12,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 437 [2018-10-24 16:22:12,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:13,000 INFO L225 Difference]: With dead ends: 243659 [2018-10-24 16:22:13,000 INFO L226 Difference]: Without dead ends: 179489 [2018-10-24 16:22:13,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179489 states. [2018-10-24 16:22:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179489 to 170640. [2018-10-24 16:22:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170640 states. [2018-10-24 16:22:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170640 states to 170640 states and 192520 transitions. [2018-10-24 16:22:15,723 INFO L78 Accepts]: Start accepts. Automaton has 170640 states and 192520 transitions. Word has length 437 [2018-10-24 16:22:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:15,724 INFO L481 AbstractCegarLoop]: Abstraction has 170640 states and 192520 transitions. [2018-10-24 16:22:15,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 170640 states and 192520 transitions. [2018-10-24 16:22:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-24 16:22:15,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:15,734 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, 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, 3, 3, 3, 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] [2018-10-24 16:22:15,734 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:15,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:15,735 INFO L82 PathProgramCache]: Analyzing trace with hash -53402876, now seen corresponding path program 1 times [2018-10-24 16:22:15,735 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:15,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:15,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:15,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:15,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 411 proven. 40 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:22:16,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:16,494 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 16:22:16,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:16,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-10-24 16:22:16,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:16,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:22:16,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:16,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:16,863 INFO L87 Difference]: Start difference. First operand 170640 states and 192520 transitions. Second operand 5 states. [2018-10-24 16:22:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:26,790 INFO L93 Difference]: Finished difference Result 344414 states and 389543 transitions. [2018-10-24 16:22:26,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:26,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-10-24 16:22:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:26,987 INFO L225 Difference]: With dead ends: 344414 [2018-10-24 16:22:26,988 INFO L226 Difference]: Without dead ends: 174564 [2018-10-24 16:22:27,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 468 SyntacticMatches, 4 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 16:22:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174564 states. [2018-10-24 16:22:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174564 to 172987. [2018-10-24 16:22:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172987 states. [2018-10-24 16:22:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172987 states to 172987 states and 187869 transitions. [2018-10-24 16:22:28,519 INFO L78 Accepts]: Start accepts. Automaton has 172987 states and 187869 transitions. Word has length 467 [2018-10-24 16:22:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:28,520 INFO L481 AbstractCegarLoop]: Abstraction has 172987 states and 187869 transitions. [2018-10-24 16:22:28,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 172987 states and 187869 transitions. [2018-10-24 16:22:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-10-24 16:22:28,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:28,533 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, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:22:28,533 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:28,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:28,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1412837417, now seen corresponding path program 1 times [2018-10-24 16:22:28,534 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:28,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:28,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:28,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:28,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-24 16:22:29,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:29,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:22:29,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:29,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:29,140 INFO L87 Difference]: Start difference. First operand 172987 states and 187869 transitions. Second operand 3 states. [2018-10-24 16:22:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:34,680 INFO L93 Difference]: Finished difference Result 343593 states and 372966 transitions. [2018-10-24 16:22:34,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:34,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 532 [2018-10-24 16:22:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:34,885 INFO L225 Difference]: With dead ends: 343593 [2018-10-24 16:22:34,885 INFO L226 Difference]: Without dead ends: 171393 [2018-10-24 16:22:34,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171393 states. [2018-10-24 16:22:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171393 to 171393. [2018-10-24 16:22:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171393 states. [2018-10-24 16:22:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171393 states to 171393 states and 185857 transitions. [2018-10-24 16:22:36,570 INFO L78 Accepts]: Start accepts. Automaton has 171393 states and 185857 transitions. Word has length 532 [2018-10-24 16:22:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:36,571 INFO L481 AbstractCegarLoop]: Abstraction has 171393 states and 185857 transitions. [2018-10-24 16:22:36,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 171393 states and 185857 transitions. [2018-10-24 16:22:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-10-24 16:22:36,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:36,591 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, 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, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-24 16:22:36,592 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:36,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:36,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1252638789, now seen corresponding path program 1 times [2018-10-24 16:22:36,592 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:36,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:36,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:36,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:36,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-24 16:22:38,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:38,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:38,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:38,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:38,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:38,713 INFO L87 Difference]: Start difference. First operand 171393 states and 185857 transitions. Second operand 4 states. [2018-10-24 16:22:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:52,026 INFO L93 Difference]: Finished difference Result 341239 states and 370035 transitions. [2018-10-24 16:22:52,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:52,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 581 [2018-10-24 16:22:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:53,804 INFO L225 Difference]: With dead ends: 341239 [2018-10-24 16:22:53,805 INFO L226 Difference]: Without dead ends: 170636 [2018-10-24 16:22:53,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 16:22:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170636 states. [2018-10-24 16:22:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170636 to 168228. [2018-10-24 16:22:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168228 states. [2018-10-24 16:22:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168228 states to 168228 states and 178391 transitions. [2018-10-24 16:22:55,432 INFO L78 Accepts]: Start accepts. Automaton has 168228 states and 178391 transitions. Word has length 581 [2018-10-24 16:22:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:55,433 INFO L481 AbstractCegarLoop]: Abstraction has 168228 states and 178391 transitions. [2018-10-24 16:22:55,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 168228 states and 178391 transitions. [2018-10-24 16:22:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-24 16:22:55,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:55,478 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, 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:55,479 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:55,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:55,479 INFO L82 PathProgramCache]: Analyzing trace with hash -889174091, now seen corresponding path program 1 times [2018-10-24 16:22:55,480 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:55,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:55,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:55,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:55,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-24 16:22:58,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:58,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:58,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:58,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:58,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:58,223 INFO L87 Difference]: Start difference. First operand 168228 states and 178391 transitions. Second operand 4 states. [2018-10-24 16:23:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:10,098 INFO L93 Difference]: Finished difference Result 334870 states and 355138 transitions. [2018-10-24 16:23:10,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:10,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 788 [2018-10-24 16:23:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:10,298 INFO L225 Difference]: With dead ends: 334870 [2018-10-24 16:23:10,299 INFO L226 Difference]: Without dead ends: 166642 [2018-10-24 16:23:10,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166642 states. [2018-10-24 16:23:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166642 to 165065. [2018-10-24 16:23:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165065 states. [2018-10-24 16:23:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165065 states to 165065 states and 174326 transitions. [2018-10-24 16:23:12,448 INFO L78 Accepts]: Start accepts. Automaton has 165065 states and 174326 transitions. Word has length 788 [2018-10-24 16:23:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:12,449 INFO L481 AbstractCegarLoop]: Abstraction has 165065 states and 174326 transitions. [2018-10-24 16:23:12,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 165065 states and 174326 transitions. [2018-10-24 16:23:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2018-10-24 16:23:12,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:12,491 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, 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:12,492 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:12,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1855940950, now seen corresponding path program 1 times [2018-10-24 16:23:12,492 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:12,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:12,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:12,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:12,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:13,048 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:23:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 940 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-10-24 16:23:14,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:14,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:14,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:14,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:14,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:14,221 INFO L87 Difference]: Start difference. First operand 165065 states and 174326 transitions. Second operand 4 states. [2018-10-24 16:23:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:23,644 INFO L93 Difference]: Finished difference Result 329341 states and 347733 transitions. [2018-10-24 16:23:23,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:23,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 799 [2018-10-24 16:23:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:23,840 INFO L225 Difference]: With dead ends: 329341 [2018-10-24 16:23:23,840 INFO L226 Difference]: Without dead ends: 165066 [2018-10-24 16:23:23,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 16:23:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165066 states. [2018-10-24 16:23:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165066 to 158745. [2018-10-24 16:23:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158745 states. [2018-10-24 16:23:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158745 states to 158745 states and 165451 transitions. [2018-10-24 16:23:25,748 INFO L78 Accepts]: Start accepts. Automaton has 158745 states and 165451 transitions. Word has length 799 [2018-10-24 16:23:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:25,749 INFO L481 AbstractCegarLoop]: Abstraction has 158745 states and 165451 transitions. [2018-10-24 16:23:25,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 158745 states and 165451 transitions. [2018-10-24 16:23:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2018-10-24 16:23:25,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:25,791 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:25,792 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:25,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash 2021969542, now seen corresponding path program 1 times [2018-10-24 16:23:25,792 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:25,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:25,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:25,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:25,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:23:27,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:27,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:27,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:23:27,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:23:27,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:27,318 INFO L87 Difference]: Start difference. First operand 158745 states and 165451 transitions. Second operand 5 states. Received shutdown request... [2018-10-24 16:23:37,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:23:37,574 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:23:37,581 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:23:37,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:23:37 BoogieIcfgContainer [2018-10-24 16:23:37,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:23:37,583 INFO L168 Benchmark]: Toolchain (without parser) took 229260.57 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -915.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:37,584 INFO L168 Benchmark]: CDTParser took 0.25 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 16:23:37,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2439.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:37,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 752.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:37,586 INFO L168 Benchmark]: Boogie Preprocessor took 484.26 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: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:37,587 INFO L168 Benchmark]: RCFGBuilder took 13910.01 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 234.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 45.3 MB). Peak memory consumption was 606.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:37,588 INFO L168 Benchmark]: TraceAbstraction took 211667.98 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -244.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:37,593 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2439.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 752.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 484.26 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: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13910.01 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 234.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 45.3 MB). Peak memory consumption was 606.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211667.98 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -244.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (158745states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (174366 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 211.5s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 180.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10932 SDtfs, 34529 SDslu, 3564 SDs, 0 SdLazy, 66757 SolverSat, 16366 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 141.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1322 GetRequests, 1272 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172987occurred in iteration=10, 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: 14.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 48512 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.9s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 7675 NumberOfCodeBlocks, 7675 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7656 ConstructedInterpolants, 0 QuantifiedInterpolants, 9231132 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1690 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 9855/9909 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown