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/Problem11_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:08:48,131 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:08:48,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:08:48,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:08:48,146 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:08:48,147 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:08:48,149 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:08:48,151 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:08:48,153 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:08:48,153 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:08:48,154 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:08:48,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:08:48,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:08:48,157 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:08:48,158 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:08:48,159 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:08:48,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:08:48,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:08:48,164 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:08:48,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:08:48,167 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:08:48,168 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:08:48,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:08:48,171 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:08:48,171 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:08:48,172 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:08:48,173 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:08:48,174 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:08:48,175 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:08:48,176 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:08:48,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:08:48,177 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:08:48,178 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:08:48,178 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:08:48,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:08:48,180 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:08:48,180 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 16:08:48,210 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:08:48,210 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:08:48,212 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:08:48,212 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:08:48,212 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:08:48,213 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:08:48,213 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:08:48,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:08:48,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:08:48,214 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:08:48,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:08:48,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:08:48,215 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:08:48,215 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:08:48,215 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:08:48,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:08:48,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:08:48,216 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:08:48,216 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:08:48,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:08:48,218 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:08:48,218 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:08:48,218 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:08:48,219 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:08:48,219 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:08:48,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:08:48,219 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:08:48,219 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:08:48,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:08:48,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:08:48,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:08:48,320 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:08:48,321 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:08:48,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-24 16:08:48,390 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3b0b22ace/241867c9131145768a547a10a189dbad/FLAGb96da8c02 [2018-10-24 16:08:48,993 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:08:48,994 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-10-24 16:08:49,029 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3b0b22ace/241867c9131145768a547a10a189dbad/FLAGb96da8c02 [2018-10-24 16:08:49,050 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3b0b22ace/241867c9131145768a547a10a189dbad [2018-10-24 16:08:49,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:08:49,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:08:49,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:08:49,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:08:49,072 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:08:49,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:08:49" (1/1) ... [2018-10-24 16:08:49,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:49, skipping insertion in model container [2018-10-24 16:08:49,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:08:49" (1/1) ... [2018-10-24 16:08:49,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:08:49,183 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:08:49,838 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:08:49,844 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:08:50,034 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:08:50,051 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:08:50,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50 WrapperNode [2018-10-24 16:08:50,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:08:50,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:08:50,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:08:50,053 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:08:50,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:08:50,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:08:50,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:08:50,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:08:50,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (1/1) ... [2018-10-24 16:08:50,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:08:50,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:08:50,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:08:50,529 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:08:50,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (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 16:08:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:08:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:08:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:08:55,325 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:08:55,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:08:55 BoogieIcfgContainer [2018-10-24 16:08:55,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:08:55,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:08:55,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:08:55,337 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:08:55,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:08:49" (1/3) ... [2018-10-24 16:08:55,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ad2da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:08:55, skipping insertion in model container [2018-10-24 16:08:55,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:08:50" (2/3) ... [2018-10-24 16:08:55,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ad2da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:08:55, skipping insertion in model container [2018-10-24 16:08:55,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:08:55" (3/3) ... [2018-10-24 16:08:55,346 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-10-24 16:08:55,355 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:08:55,363 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:08:55,381 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:08:55,419 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:08:55,420 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:08:55,420 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:08:55,420 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:08:55,421 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:08:55,421 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:08:55,421 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:08:55,421 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:08:55,421 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:08:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 16:08:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 16:08:55,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:55,460 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 16:08:55,465 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:55,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1057203130, now seen corresponding path program 1 times [2018-10-24 16:08:55,473 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:55,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:55,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:55,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:55,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:55,942 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 16:08:55,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:08:55,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:08:55,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:08:55,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:08:55,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:08:55,970 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 16:08:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:59,225 INFO L93 Difference]: Finished difference Result 955 states and 1722 transitions. [2018-10-24 16:08:59,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:08:59,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-24 16:08:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:59,251 INFO L225 Difference]: With dead ends: 955 [2018-10-24 16:08:59,251 INFO L226 Difference]: Without dead ends: 664 [2018-10-24 16:08:59,257 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 16:08:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2018-10-24 16:08:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 472. [2018-10-24 16:08:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2018-10-24 16:08:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 716 transitions. [2018-10-24 16:08:59,336 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 716 transitions. Word has length 42 [2018-10-24 16:08:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:59,336 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 716 transitions. [2018-10-24 16:08:59,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:08:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 716 transitions. [2018-10-24 16:08:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 16:08:59,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:59,342 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] [2018-10-24 16:08:59,342 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:59,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash 443033267, now seen corresponding path program 1 times [2018-10-24 16:08:59,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:59,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:59,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:59,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:59,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:59,618 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 16:08:59,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:08:59,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:08:59,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:08:59,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:08:59,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:08:59,621 INFO L87 Difference]: Start difference. First operand 472 states and 716 transitions. Second operand 4 states. [2018-10-24 16:09:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:02,908 INFO L93 Difference]: Finished difference Result 1700 states and 2661 transitions. [2018-10-24 16:09:02,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:09:02,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2018-10-24 16:09:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:02,917 INFO L225 Difference]: With dead ends: 1700 [2018-10-24 16:09:02,918 INFO L226 Difference]: Without dead ends: 1230 [2018-10-24 16:09:02,922 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 16:09:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2018-10-24 16:09:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1216. [2018-10-24 16:09:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-10-24 16:09:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1756 transitions. [2018-10-24 16:09:02,984 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1756 transitions. Word has length 111 [2018-10-24 16:09:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:02,984 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1756 transitions. [2018-10-24 16:09:02,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:09:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1756 transitions. [2018-10-24 16:09:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 16:09:02,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:02,988 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] [2018-10-24 16:09:02,989 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:02,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:02,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1410239073, now seen corresponding path program 1 times [2018-10-24 16:09:02,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:02,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:02,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:02,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:02,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:03,320 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 16:09:03,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:09:03,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:09:03,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:09:03,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:09:03,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:09:03,321 INFO L87 Difference]: Start difference. First operand 1216 states and 1756 transitions. Second operand 4 states. [2018-10-24 16:09:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:09,255 INFO L93 Difference]: Finished difference Result 4493 states and 6609 transitions. [2018-10-24 16:09:09,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:09:09,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-24 16:09:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:09,273 INFO L225 Difference]: With dead ends: 4493 [2018-10-24 16:09:09,274 INFO L226 Difference]: Without dead ends: 3279 [2018-10-24 16:09:09,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 16:09:09,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2018-10-24 16:09:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2327. [2018-10-24 16:09:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2018-10-24 16:09:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3050 transitions. [2018-10-24 16:09:09,330 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3050 transitions. Word has length 119 [2018-10-24 16:09:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:09,331 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3050 transitions. [2018-10-24 16:09:09,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:09:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3050 transitions. [2018-10-24 16:09:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 16:09:09,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:09,336 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, 1, 1] [2018-10-24 16:09:09,336 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:09,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash 769351759, now seen corresponding path program 1 times [2018-10-24 16:09:09,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:09,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:09,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:09,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:09,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:09,729 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 16:09:09,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:09:09,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:09:09,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:09:09,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:09:09,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:09:09,731 INFO L87 Difference]: Start difference. First operand 2327 states and 3050 transitions. Second operand 5 states. [2018-10-24 16:09:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:14,232 INFO L93 Difference]: Finished difference Result 8582 states and 11784 transitions. [2018-10-24 16:09:14,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:09:14,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-24 16:09:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:14,267 INFO L225 Difference]: With dead ends: 8582 [2018-10-24 16:09:14,267 INFO L226 Difference]: Without dead ends: 6442 [2018-10-24 16:09:14,271 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 16:09:14,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6442 states. [2018-10-24 16:09:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6442 to 6441. [2018-10-24 16:09:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6441 states. [2018-10-24 16:09:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 8418 transitions. [2018-10-24 16:09:14,399 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 8418 transitions. Word has length 170 [2018-10-24 16:09:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:14,400 INFO L481 AbstractCegarLoop]: Abstraction has 6441 states and 8418 transitions. [2018-10-24 16:09:14,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:09:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 8418 transitions. [2018-10-24 16:09:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-24 16:09:14,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:14,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:09:14,412 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:14,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:14,412 INFO L82 PathProgramCache]: Analyzing trace with hash 234963349, now seen corresponding path program 1 times [2018-10-24 16:09:14,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:14,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:14,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:14,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:14,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-24 16:09:14,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:09:14,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:09:14,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:09:14,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:09:14,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:09:14,876 INFO L87 Difference]: Start difference. First operand 6441 states and 8418 transitions. Second operand 4 states. [2018-10-24 16:09:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:17,614 INFO L93 Difference]: Finished difference Result 16416 states and 21797 transitions. [2018-10-24 16:09:17,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:09:17,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-24 16:09:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:17,659 INFO L225 Difference]: With dead ends: 16416 [2018-10-24 16:09:17,659 INFO L226 Difference]: Without dead ends: 10162 [2018-10-24 16:09:17,669 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 16:09:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10162 states. [2018-10-24 16:09:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10162 to 9586. [2018-10-24 16:09:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9586 states. [2018-10-24 16:09:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9586 states to 9586 states and 12343 transitions. [2018-10-24 16:09:17,835 INFO L78 Accepts]: Start accepts. Automaton has 9586 states and 12343 transitions. Word has length 248 [2018-10-24 16:09:17,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:17,836 INFO L481 AbstractCegarLoop]: Abstraction has 9586 states and 12343 transitions. [2018-10-24 16:09:17,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:09:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 9586 states and 12343 transitions. [2018-10-24 16:09:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-24 16:09:17,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:17,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:09:17,846 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:17,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1804187153, now seen corresponding path program 1 times [2018-10-24 16:09:17,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:17,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:17,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:17,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:17,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:18,576 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-24 16:09:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:09:18,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:09:18,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:09:18,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:09:18,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:09:18,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:09:18,623 INFO L87 Difference]: Start difference. First operand 9586 states and 12343 transitions. Second operand 4 states. [2018-10-24 16:09:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:20,737 INFO L93 Difference]: Finished difference Result 19558 states and 25184 transitions. [2018-10-24 16:09:20,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:09:20,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2018-10-24 16:09:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:20,791 INFO L225 Difference]: With dead ends: 19558 [2018-10-24 16:09:20,792 INFO L226 Difference]: Without dead ends: 10159 [2018-10-24 16:09:20,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:09:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10159 states. [2018-10-24 16:09:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10159 to 10140. [2018-10-24 16:09:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10140 states. [2018-10-24 16:09:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 12422 transitions. [2018-10-24 16:09:21,073 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 12422 transitions. Word has length 257 [2018-10-24 16:09:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:21,074 INFO L481 AbstractCegarLoop]: Abstraction has 10140 states and 12422 transitions. [2018-10-24 16:09:21,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:09:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 12422 transitions. [2018-10-24 16:09:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-24 16:09:21,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:21,087 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, 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] [2018-10-24 16:09:21,087 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:21,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:21,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1431470119, now seen corresponding path program 1 times [2018-10-24 16:09:21,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:21,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:21,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:21,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:21,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 16:09:21,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:09:21,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:09:21,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:09:21,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:09:21,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:09:21,323 INFO L87 Difference]: Start difference. First operand 10140 states and 12422 transitions. Second operand 3 states. [2018-10-24 16:09:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:22,593 INFO L93 Difference]: Finished difference Result 23422 states and 28663 transitions. [2018-10-24 16:09:22,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:09:22,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2018-10-24 16:09:22,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:22,617 INFO L225 Difference]: With dead ends: 23422 [2018-10-24 16:09:22,617 INFO L226 Difference]: Without dead ends: 12716 [2018-10-24 16:09:22,630 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 16:09:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2018-10-24 16:09:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12531. [2018-10-24 16:09:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12531 states. [2018-10-24 16:09:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 14328 transitions. [2018-10-24 16:09:22,788 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 14328 transitions. Word has length 310 [2018-10-24 16:09:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:22,789 INFO L481 AbstractCegarLoop]: Abstraction has 12531 states and 14328 transitions. [2018-10-24 16:09:22,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:09:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 14328 transitions. [2018-10-24 16:09:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-24 16:09:22,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:22,803 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:09:22,803 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:22,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash 918935609, now seen corresponding path program 1 times [2018-10-24 16:09:22,804 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:22,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:22,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:22,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:22,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:23,457 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:09:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:09:23,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:09:23,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:09:23,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:09:23,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:09:23,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:09:23,609 INFO L87 Difference]: Start difference. First operand 12531 states and 14328 transitions. Second operand 5 states. [2018-10-24 16:09:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:28,289 INFO L93 Difference]: Finished difference Result 33238 states and 37926 transitions. [2018-10-24 16:09:28,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:09:28,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2018-10-24 16:09:28,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:28,323 INFO L225 Difference]: With dead ends: 33238 [2018-10-24 16:09:28,324 INFO L226 Difference]: Without dead ends: 20146 [2018-10-24 16:09:28,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:09:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20146 states. [2018-10-24 16:09:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20146 to 19393. [2018-10-24 16:09:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19393 states. [2018-10-24 16:09:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19393 states to 19393 states and 21884 transitions. [2018-10-24 16:09:28,600 INFO L78 Accepts]: Start accepts. Automaton has 19393 states and 21884 transitions. Word has length 326 [2018-10-24 16:09:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:28,601 INFO L481 AbstractCegarLoop]: Abstraction has 19393 states and 21884 transitions. [2018-10-24 16:09:28,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:09:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 19393 states and 21884 transitions. [2018-10-24 16:09:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-24 16:09:28,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:28,624 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:09:28,624 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:28,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:28,624 INFO L82 PathProgramCache]: Analyzing trace with hash 360419895, now seen corresponding path program 1 times [2018-10-24 16:09:28,625 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:28,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:28,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:28,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:28,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:29,144 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 16:09:29,490 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-24 16:09:29,823 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-24 16:09:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:09:30,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:09:30,396 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 16:09:30,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:30,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:09:30,829 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-24 16:09:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:09:31,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:09:31,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 13 [2018-10-24 16:09:31,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 16:09:31,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 16:09:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:09:31,989 INFO L87 Difference]: Start difference. First operand 19393 states and 21884 transitions. Second operand 14 states. [2018-10-24 16:09:34,181 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-24 16:09:35,043 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2018-10-24 16:09:35,668 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-24 16:09:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:50,420 INFO L93 Difference]: Finished difference Result 51635 states and 59102 transitions. [2018-10-24 16:09:50,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-24 16:09:50,421 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 364 [2018-10-24 16:09:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:50,466 INFO L225 Difference]: With dead ends: 51635 [2018-10-24 16:09:50,467 INFO L226 Difference]: Without dead ends: 26472 [2018-10-24 16:09:50,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=864, Invalid=2676, Unknown=0, NotChecked=0, Total=3540 [2018-10-24 16:09:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26472 states. [2018-10-24 16:09:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26472 to 15161. [2018-10-24 16:09:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15161 states. [2018-10-24 16:09:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15161 states to 15161 states and 16801 transitions. [2018-10-24 16:09:50,811 INFO L78 Accepts]: Start accepts. Automaton has 15161 states and 16801 transitions. Word has length 364 [2018-10-24 16:09:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:50,812 INFO L481 AbstractCegarLoop]: Abstraction has 15161 states and 16801 transitions. [2018-10-24 16:09:50,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 16:09:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 15161 states and 16801 transitions. [2018-10-24 16:09:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-24 16:09:50,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:09:50,845 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, 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] [2018-10-24 16:09:50,846 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:09:50,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:09:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1223858441, now seen corresponding path program 1 times [2018-10-24 16:09:50,846 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:09:50,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:09:50,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:50,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:50,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:09:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 469 proven. 82 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-10-24 16:09:51,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:09:51,613 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 16:09:51,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:09:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:09:51,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:09:53,656 WARN L179 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2018-10-24 16:09:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-24 16:09:54,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:09:54,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:09:54,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:09:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:09:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:09:54,473 INFO L87 Difference]: Start difference. First operand 15161 states and 16801 transitions. Second operand 7 states. [2018-10-24 16:10:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:05,015 INFO L93 Difference]: Finished difference Result 38414 states and 42506 transitions. [2018-10-24 16:10:05,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:10:05,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2018-10-24 16:10:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:05,035 INFO L225 Difference]: With dead ends: 38414 [2018-10-24 16:10:05,036 INFO L226 Difference]: Without dead ends: 22885 [2018-10-24 16:10:05,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-10-24 16:10:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22885 states. [2018-10-24 16:10:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22885 to 18433. [2018-10-24 16:10:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18433 states. [2018-10-24 16:10:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18433 states to 18433 states and 20297 transitions. [2018-10-24 16:10:05,305 INFO L78 Accepts]: Start accepts. Automaton has 18433 states and 20297 transitions. Word has length 506 [2018-10-24 16:10:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:05,306 INFO L481 AbstractCegarLoop]: Abstraction has 18433 states and 20297 transitions. [2018-10-24 16:10:05,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:10:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 18433 states and 20297 transitions. [2018-10-24 16:10:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2018-10-24 16:10:05,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:05,350 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:05,351 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:05,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:05,351 INFO L82 PathProgramCache]: Analyzing trace with hash -71359830, now seen corresponding path program 1 times [2018-10-24 16:10:05,351 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:05,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:05,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:05,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:05,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:06,004 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:10:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-10-24 16:10:06,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:06,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:10:06,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:10:06,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:10:06,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:06,304 INFO L87 Difference]: Start difference. First operand 18433 states and 20297 transitions. Second operand 4 states. [2018-10-24 16:10:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:08,354 INFO L93 Difference]: Finished difference Result 37066 states and 40808 transitions. [2018-10-24 16:10:08,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:10:08,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 593 [2018-10-24 16:10:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:08,374 INFO L225 Difference]: With dead ends: 37066 [2018-10-24 16:10:08,375 INFO L226 Difference]: Without dead ends: 18447 [2018-10-24 16:10:08,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:10:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18447 states. [2018-10-24 16:10:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18447 to 17320. [2018-10-24 16:10:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17320 states. [2018-10-24 16:10:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17320 states to 17320 states and 18830 transitions. [2018-10-24 16:10:08,609 INFO L78 Accepts]: Start accepts. Automaton has 17320 states and 18830 transitions. Word has length 593 [2018-10-24 16:10:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:08,610 INFO L481 AbstractCegarLoop]: Abstraction has 17320 states and 18830 transitions. [2018-10-24 16:10:08,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:10:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 17320 states and 18830 transitions. [2018-10-24 16:10:08,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-10-24 16:10:08,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:08,640 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, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:08,641 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:08,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1080018371, now seen corresponding path program 1 times [2018-10-24 16:10:08,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:08,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:08,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:08,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:08,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 808 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2018-10-24 16:10:09,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:09,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:10:09,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:10:09,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:10:09,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:10:09,532 INFO L87 Difference]: Start difference. First operand 17320 states and 18830 transitions. Second operand 5 states. [2018-10-24 16:10:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:13,377 INFO L93 Difference]: Finished difference Result 37218 states and 40464 transitions. [2018-10-24 16:10:13,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:10:13,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 626 [2018-10-24 16:10:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:13,395 INFO L225 Difference]: With dead ends: 37218 [2018-10-24 16:10:13,395 INFO L226 Difference]: Without dead ends: 20085 [2018-10-24 16:10:13,406 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 16:10:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20085 states. [2018-10-24 16:10:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20085 to 16124. [2018-10-24 16:10:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16124 states. [2018-10-24 16:10:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 17272 transitions. [2018-10-24 16:10:13,769 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 17272 transitions. Word has length 626 [2018-10-24 16:10:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:13,770 INFO L481 AbstractCegarLoop]: Abstraction has 16124 states and 17272 transitions. [2018-10-24 16:10:13,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:10:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 17272 transitions. [2018-10-24 16:10:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2018-10-24 16:10:13,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:13,787 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:13,787 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:13,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:13,788 INFO L82 PathProgramCache]: Analyzing trace with hash -330955118, now seen corresponding path program 1 times [2018-10-24 16:10:13,788 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:13,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:13,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:13,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:13,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 1297 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-10-24 16:10:14,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:14,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:10:14,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:10:14,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:10:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:14,421 INFO L87 Difference]: Start difference. First operand 16124 states and 17272 transitions. Second operand 4 states. [2018-10-24 16:10:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:16,096 INFO L93 Difference]: Finished difference Result 32629 states and 34939 transitions. [2018-10-24 16:10:16,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:10:16,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 733 [2018-10-24 16:10:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:16,111 INFO L225 Difference]: With dead ends: 32629 [2018-10-24 16:10:16,111 INFO L226 Difference]: Without dead ends: 16692 [2018-10-24 16:10:16,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:10:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16692 states. [2018-10-24 16:10:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16692 to 14937. [2018-10-24 16:10:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14937 states. [2018-10-24 16:10:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14937 states to 14937 states and 15905 transitions. [2018-10-24 16:10:16,269 INFO L78 Accepts]: Start accepts. Automaton has 14937 states and 15905 transitions. Word has length 733 [2018-10-24 16:10:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:16,269 INFO L481 AbstractCegarLoop]: Abstraction has 14937 states and 15905 transitions. [2018-10-24 16:10:16,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:10:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 14937 states and 15905 transitions. [2018-10-24 16:10:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2018-10-24 16:10:16,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:16,281 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2018-10-24 16:10:16,281 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:16,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash -213688207, now seen corresponding path program 1 times [2018-10-24 16:10:16,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:16,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:16,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:16,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:16,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:16,874 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 16:10:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 1248 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2018-10-24 16:10:17,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:17,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:10:17,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:10:17,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:10:17,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:17,371 INFO L87 Difference]: Start difference. First operand 14937 states and 15905 transitions. Second operand 4 states. [2018-10-24 16:10:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:18,871 INFO L93 Difference]: Finished difference Result 30443 states and 32400 transitions. [2018-10-24 16:10:18,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:10:18,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 761 [2018-10-24 16:10:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:18,884 INFO L225 Difference]: With dead ends: 30443 [2018-10-24 16:10:18,885 INFO L226 Difference]: Without dead ends: 15693 [2018-10-24 16:10:18,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:10:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15693 states. [2018-10-24 16:10:19,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15693 to 14379. [2018-10-24 16:10:19,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14379 states. [2018-10-24 16:10:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14379 states to 14379 states and 15289 transitions. [2018-10-24 16:10:19,023 INFO L78 Accepts]: Start accepts. Automaton has 14379 states and 15289 transitions. Word has length 761 [2018-10-24 16:10:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:19,023 INFO L481 AbstractCegarLoop]: Abstraction has 14379 states and 15289 transitions. [2018-10-24 16:10:19,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:10:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 14379 states and 15289 transitions. [2018-10-24 16:10:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2018-10-24 16:10:19,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:19,033 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:19,034 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:19,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:19,034 INFO L82 PathProgramCache]: Analyzing trace with hash -631387189, now seen corresponding path program 1 times [2018-10-24 16:10:19,034 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:19,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:19,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:19,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:19,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:19,842 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:10:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 1073 proven. 220 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2018-10-24 16:10:20,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:10:20,439 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 16:10:20,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:20,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:10:28,936 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-10-24 16:10:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 1071 proven. 600 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-10-24 16:10:31,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:10:31,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-10-24 16:10:31,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:10:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:10:31,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:10:31,104 INFO L87 Difference]: Start difference. First operand 14379 states and 15289 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 16:13:00,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:13:00,081 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:13:00,089 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:13:00,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:13:00 BoogieIcfgContainer [2018-10-24 16:13:00,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:13:00,090 INFO L168 Benchmark]: Toolchain (without parser) took 251026.54 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:00,091 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:13:00,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 986.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:00,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 308.99 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 729.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:00,093 INFO L168 Benchmark]: Boogie Preprocessor took 166.44 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:00,094 INFO L168 Benchmark]: RCFGBuilder took 4799.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.0 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:13:00,095 INFO L168 Benchmark]: TraceAbstraction took 244759.38 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:13:00,100 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 986.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 308.99 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 729.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.44 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4799.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.0 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244759.38 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was constructing difference of abstraction (14379states) and FLOYD_HOARE automaton (currently 3 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (75 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 244.6s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 215.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2963 SDtfs, 12963 SDslu, 1903 SDs, 0 SdLazy, 24775 SolverSat, 6035 SolverUnsat, 73 SolverUnknown, 0 SolverNotchecked, 200.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1765 GetRequests, 1653 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19393occurred in iteration=8, 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: 2.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 26612 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 7588 NumberOfCodeBlocks, 7588 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7570 ConstructedInterpolants, 347 QuantifiedInterpolants, 21231476 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2107 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 18 InterpolantComputations, 13 PerfectInterpolantSequences, 11129/12342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown