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_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:06:39,228 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:06:39,232 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:06:39,247 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:06:39,247 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:06:39,249 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:06:39,251 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:06:39,253 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:06:39,256 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:06:39,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:06:39,259 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:06:39,259 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:06:39,260 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:06:39,261 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:06:39,264 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:06:39,270 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:06:39,271 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:06:39,276 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:06:39,278 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:06:39,282 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:06:39,283 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:06:39,286 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:06:39,289 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:06:39,289 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:06:39,289 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:06:39,290 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:06:39,291 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:06:39,292 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:06:39,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:06:39,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:06:39,294 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:06:39,294 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:06:39,297 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 16:06:39,318 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:06:39,319 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:06:39,319 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:06:39,320 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:06:39,320 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:06:39,320 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:06:39,320 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:06:39,321 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:06:39,321 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:06:39,321 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:06:39,321 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:06:39,321 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:06:39,322 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:06:39,322 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:06:39,322 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:06:39,323 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:06:39,323 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:06:39,323 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:06:39,323 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:06:39,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:06:39,324 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:06:39,325 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:06:39,325 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:06:39,325 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:06:39,325 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:06:39,325 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:06:39,326 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:06:39,326 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:06:39,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:06:39,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:06:39,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:06:39,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:06:39,412 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:06:39,413 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-10-24 16:06:39,470 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d77a89edf/eb1ffec38ab14ba2b670f07a5c1786b1/FLAGf161807b6 [2018-10-24 16:06:40,112 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:06:40,119 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-10-24 16:06:40,145 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d77a89edf/eb1ffec38ab14ba2b670f07a5c1786b1/FLAGf161807b6 [2018-10-24 16:06:40,172 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d77a89edf/eb1ffec38ab14ba2b670f07a5c1786b1 [2018-10-24 16:06:40,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:06:40,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:06:40,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:06:40,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:06:40,194 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:06:40,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:06:40" (1/1) ... [2018-10-24 16:06:40,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:40, skipping insertion in model container [2018-10-24 16:06:40,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:06:40" (1/1) ... [2018-10-24 16:06:40,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:06:40,288 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:06:40,832 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:06:40,837 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:06:41,083 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:06:41,104 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:06:41,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41 WrapperNode [2018-10-24 16:06:41,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:06:41,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:06:41,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:06:41,108 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:06:41,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:06:41,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:06:41,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:06:41,397 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:06:41,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (1/1) ... [2018-10-24 16:06:41,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:06:41,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:06:41,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:06:41,551 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:06:41,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (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 16:06:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:06:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:06:41,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:06:46,535 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:06:46,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:06:46 BoogieIcfgContainer [2018-10-24 16:06:46,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:06:46,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:06:46,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:06:46,545 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:06:46,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:06:40" (1/3) ... [2018-10-24 16:06:46,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0422cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:06:46, skipping insertion in model container [2018-10-24 16:06:46,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:06:41" (2/3) ... [2018-10-24 16:06:46,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0422cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:06:46, skipping insertion in model container [2018-10-24 16:06:46,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:06:46" (3/3) ... [2018-10-24 16:06:46,550 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label40_true-unreach-call.c [2018-10-24 16:06:46,559 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:06:46,569 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:06:46,586 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:06:46,625 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:06:46,625 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:06:46,626 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:06:46,626 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:06:46,626 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:06:46,626 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:06:46,627 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:06:46,627 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:06:46,627 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:06:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 16:06:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 16:06:46,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:46,665 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:06:46,667 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:46,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:46,675 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-24 16:06:46,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:46,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:46,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:46,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:46,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:47,194 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 16:06:47,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:47,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:06:47,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:06:47,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:06:47,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:47,224 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 16:06:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:50,878 INFO L93 Difference]: Finished difference Result 955 states and 1722 transitions. [2018-10-24 16:06:50,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:06:50,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-24 16:06:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:50,906 INFO L225 Difference]: With dead ends: 955 [2018-10-24 16:06:50,907 INFO L226 Difference]: Without dead ends: 664 [2018-10-24 16:06:50,912 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 16:06:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2018-10-24 16:06:50,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 472. [2018-10-24 16:06:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2018-10-24 16:06:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 716 transitions. [2018-10-24 16:06:50,995 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 716 transitions. Word has length 45 [2018-10-24 16:06:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:50,996 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 716 transitions. [2018-10-24 16:06:50,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:06:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 716 transitions. [2018-10-24 16:06:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 16:06:51,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:51,002 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:51,003 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:51,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:51,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1700157718, now seen corresponding path program 1 times [2018-10-24 16:06:51,003 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:51,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:51,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:51,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:51,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:06:51,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:51,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:06:51,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:06:51,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:06:51,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:51,241 INFO L87 Difference]: Start difference. First operand 472 states and 716 transitions. Second operand 4 states. [2018-10-24 16:06:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:55,181 INFO L93 Difference]: Finished difference Result 1700 states and 2661 transitions. [2018-10-24 16:06:55,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:06:55,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-24 16:06:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:55,189 INFO L225 Difference]: With dead ends: 1700 [2018-10-24 16:06:55,190 INFO L226 Difference]: Without dead ends: 1230 [2018-10-24 16:06:55,193 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 16:06:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2018-10-24 16:06:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1216. [2018-10-24 16:06:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-10-24 16:06:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1756 transitions. [2018-10-24 16:06:55,255 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1756 transitions. Word has length 114 [2018-10-24 16:06:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:55,255 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1756 transitions. [2018-10-24 16:06:55,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:06:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1756 transitions. [2018-10-24 16:06:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 16:06:55,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:55,259 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:55,260 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:55,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:55,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1258966910, now seen corresponding path program 1 times [2018-10-24 16:06:55,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:55,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:55,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:55,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:55,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:06:55,599 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:06:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:06:55,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:06:55,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:06:55,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:06:55,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:06:55,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:06:55,631 INFO L87 Difference]: Start difference. First operand 1216 states and 1756 transitions. Second operand 4 states. [2018-10-24 16:06:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:06:59,780 INFO L93 Difference]: Finished difference Result 4494 states and 6609 transitions. [2018-10-24 16:06:59,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:06:59,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-24 16:06:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:06:59,796 INFO L225 Difference]: With dead ends: 4494 [2018-10-24 16:06:59,796 INFO L226 Difference]: Without dead ends: 3280 [2018-10-24 16:06:59,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 16:06:59,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2018-10-24 16:06:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2327. [2018-10-24 16:06:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2018-10-24 16:06:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3050 transitions. [2018-10-24 16:06:59,858 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3050 transitions. Word has length 122 [2018-10-24 16:06:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:06:59,859 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3050 transitions. [2018-10-24 16:06:59,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:06:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3050 transitions. [2018-10-24 16:06:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 16:06:59,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:06:59,864 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:06:59,864 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:06:59,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:06:59,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1763364140, now seen corresponding path program 1 times [2018-10-24 16:06:59,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:06:59,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:06:59,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:59,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:06:59,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:06:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:07:00,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:07:00,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:07:00,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:07:00,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:07:00,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:07:00,212 INFO L87 Difference]: Start difference. First operand 2327 states and 3050 transitions. Second operand 5 states. [2018-10-24 16:07:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:07:04,913 INFO L93 Difference]: Finished difference Result 8397 states and 11572 transitions. [2018-10-24 16:07:04,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:07:04,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2018-10-24 16:07:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:07:04,942 INFO L225 Difference]: With dead ends: 8397 [2018-10-24 16:07:04,943 INFO L226 Difference]: Without dead ends: 6257 [2018-10-24 16:07:04,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:07:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2018-10-24 16:07:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6256. [2018-10-24 16:07:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6256 states. [2018-10-24 16:07:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6256 states to 6256 states and 8206 transitions. [2018-10-24 16:07:05,061 INFO L78 Accepts]: Start accepts. Automaton has 6256 states and 8206 transitions. Word has length 173 [2018-10-24 16:07:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:07:05,062 INFO L481 AbstractCegarLoop]: Abstraction has 6256 states and 8206 transitions. [2018-10-24 16:07:05,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:07:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6256 states and 8206 transitions. [2018-10-24 16:07:05,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 16:07:05,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:07:05,070 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:07:05,070 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:07:05,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:07:05,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1860336133, now seen corresponding path program 1 times [2018-10-24 16:07:05,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:07:05,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:07:05,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:05,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:05,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-24 16:07:05,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:07:05,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:07:05,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:07:05,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:07:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:07:05,531 INFO L87 Difference]: Start difference. First operand 6256 states and 8206 transitions. Second operand 4 states. [2018-10-24 16:07:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:07:08,764 INFO L93 Difference]: Finished difference Result 14198 states and 18819 transitions. [2018-10-24 16:07:08,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:07:08,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2018-10-24 16:07:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:07:08,798 INFO L225 Difference]: With dead ends: 14198 [2018-10-24 16:07:08,798 INFO L226 Difference]: Without dead ends: 8129 [2018-10-24 16:07:08,807 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 16:07:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2018-10-24 16:07:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 8106. [2018-10-24 16:07:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8106 states. [2018-10-24 16:07:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 10275 transitions. [2018-10-24 16:07:08,943 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 10275 transitions. Word has length 251 [2018-10-24 16:07:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:07:08,944 INFO L481 AbstractCegarLoop]: Abstraction has 8106 states and 10275 transitions. [2018-10-24 16:07:08,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:07:08,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 10275 transitions. [2018-10-24 16:07:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-24 16:07:08,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:07:08,959 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:07:08,960 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:07:08,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:07:08,960 INFO L82 PathProgramCache]: Analyzing trace with hash -887588984, now seen corresponding path program 1 times [2018-10-24 16:07:08,960 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:07:08,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:07:08,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:08,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:08,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:07:09,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:07:09,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:07:09,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:07:09,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:07:09,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:07:09,239 INFO L87 Difference]: Start difference. First operand 8106 states and 10275 transitions. Second operand 4 states. [2018-10-24 16:07:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:07:11,256 INFO L93 Difference]: Finished difference Result 17893 states and 22908 transitions. [2018-10-24 16:07:11,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:07:11,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2018-10-24 16:07:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:07:11,319 INFO L225 Difference]: With dead ends: 17893 [2018-10-24 16:07:11,319 INFO L226 Difference]: Without dead ends: 9974 [2018-10-24 16:07:11,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:07:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2018-10-24 16:07:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 9771. [2018-10-24 16:07:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9771 states. [2018-10-24 16:07:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9771 states to 9771 states and 12053 transitions. [2018-10-24 16:07:11,564 INFO L78 Accepts]: Start accepts. Automaton has 9771 states and 12053 transitions. Word has length 331 [2018-10-24 16:07:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:07:11,565 INFO L481 AbstractCegarLoop]: Abstraction has 9771 states and 12053 transitions. [2018-10-24 16:07:11,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:07:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 9771 states and 12053 transitions. [2018-10-24 16:07:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-24 16:07:11,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:07:11,582 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:07:11,582 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:07:11,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:07:11,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1750501443, now seen corresponding path program 1 times [2018-10-24 16:07:11,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:07:11,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:07:11,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:11,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:11,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-24 16:07:11,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:07:11,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:07:11,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:07:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:07:11,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:07:11,941 INFO L87 Difference]: Start difference. First operand 9771 states and 12053 transitions. Second operand 3 states. [2018-10-24 16:07:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:07:12,994 INFO L93 Difference]: Finished difference Result 20471 states and 25180 transitions. [2018-10-24 16:07:12,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:07:12,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2018-10-24 16:07:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:07:13,025 INFO L225 Difference]: With dead ends: 20471 [2018-10-24 16:07:13,025 INFO L226 Difference]: Without dead ends: 9575 [2018-10-24 16:07:13,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:07:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2018-10-24 16:07:13,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 9572. [2018-10-24 16:07:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9572 states. [2018-10-24 16:07:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9572 states to 9572 states and 11569 transitions. [2018-10-24 16:07:13,183 INFO L78 Accepts]: Start accepts. Automaton has 9572 states and 11569 transitions. Word has length 340 [2018-10-24 16:07:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:07:13,184 INFO L481 AbstractCegarLoop]: Abstraction has 9572 states and 11569 transitions. [2018-10-24 16:07:13,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:07:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 9572 states and 11569 transitions. [2018-10-24 16:07:13,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-24 16:07:13,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:07:13,199 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:07:13,200 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:07:13,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:07:13,200 INFO L82 PathProgramCache]: Analyzing trace with hash -623402235, now seen corresponding path program 1 times [2018-10-24 16:07:13,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:07:13,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:07:13,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:13,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:13,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 167 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:07:14,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:07:14,204 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 16:07:14,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:14,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:07:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 167 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:07:15,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:07:15,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-24 16:07:15,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:07:15,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:07:15,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:07:15,564 INFO L87 Difference]: Start difference. First operand 9572 states and 11569 transitions. Second operand 9 states. [2018-10-24 16:07:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:07:28,062 INFO L93 Difference]: Finished difference Result 34574 states and 42645 transitions. [2018-10-24 16:07:28,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:07:28,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 345 [2018-10-24 16:07:28,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:07:28,108 INFO L225 Difference]: With dead ends: 34574 [2018-10-24 16:07:28,108 INFO L226 Difference]: Without dead ends: 25189 [2018-10-24 16:07:28,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:07:28,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25189 states. [2018-10-24 16:07:28,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25189 to 16973. [2018-10-24 16:07:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16973 states. [2018-10-24 16:07:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16973 states to 16973 states and 19725 transitions. [2018-10-24 16:07:28,507 INFO L78 Accepts]: Start accepts. Automaton has 16973 states and 19725 transitions. Word has length 345 [2018-10-24 16:07:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:07:28,508 INFO L481 AbstractCegarLoop]: Abstraction has 16973 states and 19725 transitions. [2018-10-24 16:07:28,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:07:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 16973 states and 19725 transitions. [2018-10-24 16:07:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-10-24 16:07:28,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:07:28,534 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:07:28,534 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:07:28,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:07:28,535 INFO L82 PathProgramCache]: Analyzing trace with hash -292184617, now seen corresponding path program 1 times [2018-10-24 16:07:28,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:07:28,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:07:28,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:28,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:28,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:29,188 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 16:07:29,596 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-24 16:07:30,055 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-10-24 16:07:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 266 proven. 106 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:07:30,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:07:30,293 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 16:07:30,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:30,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:07:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-24 16:07:30,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:07:30,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-24 16:07:30,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:07:30,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:07:30,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:07:30,948 INFO L87 Difference]: Start difference. First operand 16973 states and 19725 transitions. Second operand 9 states. [2018-10-24 16:07:31,181 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 16:07:31,978 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:07:40,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:07:40,546 INFO L93 Difference]: Finished difference Result 49720 states and 57126 transitions. [2018-10-24 16:07:40,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 16:07:40,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 356 [2018-10-24 16:07:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:07:40,593 INFO L225 Difference]: With dead ends: 49720 [2018-10-24 16:07:40,593 INFO L226 Difference]: Without dead ends: 23614 [2018-10-24 16:07:40,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-10-24 16:07:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23614 states. [2018-10-24 16:07:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23614 to 19342. [2018-10-24 16:07:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19342 states. [2018-10-24 16:07:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19342 states to 19342 states and 21245 transitions. [2018-10-24 16:07:40,850 INFO L78 Accepts]: Start accepts. Automaton has 19342 states and 21245 transitions. Word has length 356 [2018-10-24 16:07:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:07:40,851 INFO L481 AbstractCegarLoop]: Abstraction has 19342 states and 21245 transitions. [2018-10-24 16:07:40,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:07:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 19342 states and 21245 transitions. [2018-10-24 16:07:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-24 16:07:40,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:07:40,876 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 16:07:40,876 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:07:40,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:07:40,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1238625643, now seen corresponding path program 1 times [2018-10-24 16:07:40,877 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:07:40,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:07:40,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:40,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:40,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 604 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 16:07:42,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:07:42,166 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 16:07:42,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:42,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:07:42,741 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 548 DAG size of output: 29 [2018-10-24 16:07:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 390 proven. 43 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-24 16:07:43,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:07:43,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 16:07:43,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:07:43,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:07:43,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:07:43,682 INFO L87 Difference]: Start difference. First operand 19342 states and 21245 transitions. Second operand 8 states. [2018-10-24 16:07:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:07:53,673 INFO L93 Difference]: Finished difference Result 48355 states and 53253 transitions. [2018-10-24 16:07:53,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:07:53,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2018-10-24 16:07:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:07:53,726 INFO L225 Difference]: With dead ends: 48355 [2018-10-24 16:07:53,726 INFO L226 Difference]: Without dead ends: 28076 [2018-10-24 16:07:53,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 440 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-10-24 16:07:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28076 states. [2018-10-24 16:07:54,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28076 to 21191. [2018-10-24 16:07:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21191 states. [2018-10-24 16:07:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21191 states to 21191 states and 23098 transitions. [2018-10-24 16:07:54,165 INFO L78 Accepts]: Start accepts. Automaton has 21191 states and 23098 transitions. Word has length 431 [2018-10-24 16:07:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:07:54,166 INFO L481 AbstractCegarLoop]: Abstraction has 21191 states and 23098 transitions. [2018-10-24 16:07:54,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:07:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 21191 states and 23098 transitions. [2018-10-24 16:07:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-10-24 16:07:54,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:07:54,196 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:07:54,196 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:07:54,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:07:54,197 INFO L82 PathProgramCache]: Analyzing trace with hash -211960133, now seen corresponding path program 1 times [2018-10-24 16:07:54,197 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:07:54,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:07:54,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:54,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:54,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:07:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 182 proven. 465 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 16:07:54,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:07:54,891 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:07:54,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:07:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:07:55,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:07:55,510 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 16:07:56,159 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 521 DAG size of output: 29 [2018-10-24 16:07:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 308 proven. 339 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 16:07:57,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:07:57,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-10-24 16:07:57,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 16:07:57,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 16:07:57,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:07:57,374 INFO L87 Difference]: Start difference. First operand 21191 states and 23098 transitions. Second operand 12 states. [2018-10-24 16:08:08,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:08,318 INFO L93 Difference]: Finished difference Result 45527 states and 49671 transitions. [2018-10-24 16:08:08,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:08:08,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 464 [2018-10-24 16:08:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:08,344 INFO L225 Difference]: With dead ends: 45527 [2018-10-24 16:08:08,344 INFO L226 Difference]: Without dead ends: 23970 [2018-10-24 16:08:08,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2018-10-24 16:08:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23970 states. [2018-10-24 16:08:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23970 to 16595. [2018-10-24 16:08:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16595 states. [2018-10-24 16:08:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16595 states to 16595 states and 17775 transitions. [2018-10-24 16:08:08,604 INFO L78 Accepts]: Start accepts. Automaton has 16595 states and 17775 transitions. Word has length 464 [2018-10-24 16:08:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:08,605 INFO L481 AbstractCegarLoop]: Abstraction has 16595 states and 17775 transitions. [2018-10-24 16:08:08,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 16:08:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 16595 states and 17775 transitions. [2018-10-24 16:08:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-10-24 16:08:08,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:08,638 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:08:08,638 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:08,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash -72513983, now seen corresponding path program 1 times [2018-10-24 16:08:08,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:08,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:08,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:08,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:08,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:09,119 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:08:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2018-10-24 16:08:09,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:08:09,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:08:09,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:08:09,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:08:09,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:08:09,267 INFO L87 Difference]: Start difference. First operand 16595 states and 17775 transitions. Second operand 4 states. [2018-10-24 16:08:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:10,354 INFO L93 Difference]: Finished difference Result 30779 states and 33004 transitions. [2018-10-24 16:08:10,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:08:10,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 549 [2018-10-24 16:08:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:10,370 INFO L225 Difference]: With dead ends: 30779 [2018-10-24 16:08:10,370 INFO L226 Difference]: Without dead ends: 16223 [2018-10-24 16:08:10,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 16:08:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16223 states. [2018-10-24 16:08:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16223 to 14922. [2018-10-24 16:08:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14922 states. [2018-10-24 16:08:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14922 states to 14922 states and 15952 transitions. [2018-10-24 16:08:10,654 INFO L78 Accepts]: Start accepts. Automaton has 14922 states and 15952 transitions. Word has length 549 [2018-10-24 16:08:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:10,654 INFO L481 AbstractCegarLoop]: Abstraction has 14922 states and 15952 transitions. [2018-10-24 16:08:10,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:08:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14922 states and 15952 transitions. [2018-10-24 16:08:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-10-24 16:08:10,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:10,672 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:08:10,673 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:10,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash -448766609, now seen corresponding path program 1 times [2018-10-24 16:08:10,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:10,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:10,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:10,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:10,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 875 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-10-24 16:08:11,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:08:11,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:08:11,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:08:11,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:08:11,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:08:11,206 INFO L87 Difference]: Start difference. First operand 14922 states and 15952 transitions. Second operand 4 states. [2018-10-24 16:08:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:12,930 INFO L93 Difference]: Finished difference Result 29852 states and 31910 transitions. [2018-10-24 16:08:12,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:08:12,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 555 [2018-10-24 16:08:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:12,944 INFO L225 Difference]: With dead ends: 29852 [2018-10-24 16:08:12,944 INFO L226 Difference]: Without dead ends: 16410 [2018-10-24 16:08:12,953 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 16:08:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16410 states. [2018-10-24 16:08:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16410 to 14550. [2018-10-24 16:08:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14550 states. [2018-10-24 16:08:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14550 states to 14550 states and 15489 transitions. [2018-10-24 16:08:13,106 INFO L78 Accepts]: Start accepts. Automaton has 14550 states and 15489 transitions. Word has length 555 [2018-10-24 16:08:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:13,107 INFO L481 AbstractCegarLoop]: Abstraction has 14550 states and 15489 transitions. [2018-10-24 16:08:13,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:08:13,107 INFO L276 IsEmpty]: Start isEmpty. Operand 14550 states and 15489 transitions. [2018-10-24 16:08:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-10-24 16:08:13,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:13,116 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 16:08:13,116 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:13,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1693902381, now seen corresponding path program 1 times [2018-10-24 16:08:13,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:13,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:13,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:13,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:13,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:13,626 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-24 16:08:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2018-10-24 16:08:13,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:08:13,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:08:13,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:08:13,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:08:13,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:08:13,867 INFO L87 Difference]: Start difference. First operand 14550 states and 15489 transitions. Second operand 5 states. [2018-10-24 16:08:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:16,077 INFO L93 Difference]: Finished difference Result 27991 states and 29842 transitions. [2018-10-24 16:08:16,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:08:16,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 566 [2018-10-24 16:08:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:16,091 INFO L225 Difference]: With dead ends: 27991 [2018-10-24 16:08:16,091 INFO L226 Difference]: Without dead ends: 15108 [2018-10-24 16:08:16,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:08:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15108 states. [2018-10-24 16:08:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15108 to 13809. [2018-10-24 16:08:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13809 states. [2018-10-24 16:08:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13809 states to 13809 states and 14653 transitions. [2018-10-24 16:08:16,251 INFO L78 Accepts]: Start accepts. Automaton has 13809 states and 14653 transitions. Word has length 566 [2018-10-24 16:08:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:16,252 INFO L481 AbstractCegarLoop]: Abstraction has 13809 states and 14653 transitions. [2018-10-24 16:08:16,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:08:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 13809 states and 14653 transitions. [2018-10-24 16:08:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2018-10-24 16:08:16,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:16,263 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:08:16,263 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:16,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:16,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1644792320, now seen corresponding path program 1 times [2018-10-24 16:08:16,264 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:16,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:16,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:16,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:16,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 845 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-10-24 16:08:17,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:08:17,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:08:17,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:08:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:08:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:08:17,052 INFO L87 Difference]: Start difference. First operand 13809 states and 14653 transitions. Second operand 4 states. [2018-10-24 16:08:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:18,387 INFO L93 Difference]: Finished difference Result 26707 states and 28341 transitions. [2018-10-24 16:08:18,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:08:18,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 587 [2018-10-24 16:08:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:18,399 INFO L225 Difference]: With dead ends: 26707 [2018-10-24 16:08:18,400 INFO L226 Difference]: Without dead ends: 14565 [2018-10-24 16:08:18,406 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 16:08:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14565 states. [2018-10-24 16:08:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14565 to 13439. [2018-10-24 16:08:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13439 states. [2018-10-24 16:08:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 14238 transitions. [2018-10-24 16:08:18,519 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 14238 transitions. Word has length 587 [2018-10-24 16:08:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:18,520 INFO L481 AbstractCegarLoop]: Abstraction has 13439 states and 14238 transitions. [2018-10-24 16:08:18,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:08:18,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 14238 transitions. [2018-10-24 16:08:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-10-24 16:08:18,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:18,530 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:08:18,530 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:18,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:18,530 INFO L82 PathProgramCache]: Analyzing trace with hash 623141152, now seen corresponding path program 1 times [2018-10-24 16:08:18,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:18,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:18,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:18,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:18,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 134 proven. 1073 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-24 16:08:19,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:08:19,696 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:08:19,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:19,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:08:20,907 WARN L179 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2018-10-24 16:08:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 434 proven. 773 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-24 16:08:23,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:08:23,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-10-24 16:08:23,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 16:08:23,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 16:08:23,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:08:23,138 INFO L87 Difference]: Start difference. First operand 13439 states and 14238 transitions. Second operand 12 states. [2018-10-24 16:08:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:30,027 INFO L93 Difference]: Finished difference Result 34308 states and 36289 transitions. [2018-10-24 16:08:30,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:08:30,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 722 [2018-10-24 16:08:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:30,048 INFO L225 Difference]: With dead ends: 34308 [2018-10-24 16:08:30,048 INFO L226 Difference]: Without dead ends: 22166 [2018-10-24 16:08:30,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 717 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:08:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22166 states. [2018-10-24 16:08:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22166 to 14369. [2018-10-24 16:08:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14369 states. [2018-10-24 16:08:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 15209 transitions. [2018-10-24 16:08:30,302 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 15209 transitions. Word has length 722 [2018-10-24 16:08:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:30,303 INFO L481 AbstractCegarLoop]: Abstraction has 14369 states and 15209 transitions. [2018-10-24 16:08:30,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 16:08:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 15209 transitions. [2018-10-24 16:08:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2018-10-24 16:08:30,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:30,318 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, 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, 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, 4, 4, 4, 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, 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 16:08:30,319 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:30,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:30,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2135794138, now seen corresponding path program 1 times [2018-10-24 16:08:30,319 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:30,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:30,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:30,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:30,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1514 proven. 116 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-10-24 16:08:31,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:08:31,222 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:08:31,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:31,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:08:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1402 proven. 86 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2018-10-24 16:08:33,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:08:33,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-24 16:08:33,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:08:33,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:08:33,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:08:33,665 INFO L87 Difference]: Start difference. First operand 14369 states and 15209 transitions. Second operand 8 states. [2018-10-24 16:08:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:08:45,981 INFO L93 Difference]: Finished difference Result 38747 states and 41017 transitions. [2018-10-24 16:08:45,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 16:08:45,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 817 [2018-10-24 16:08:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:08:46,007 INFO L225 Difference]: With dead ends: 38747 [2018-10-24 16:08:46,007 INFO L226 Difference]: Without dead ends: 24937 [2018-10-24 16:08:46,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 823 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-10-24 16:08:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2018-10-24 16:08:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 18087. [2018-10-24 16:08:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18087 states. [2018-10-24 16:08:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18087 states to 18087 states and 19125 transitions. [2018-10-24 16:08:46,266 INFO L78 Accepts]: Start accepts. Automaton has 18087 states and 19125 transitions. Word has length 817 [2018-10-24 16:08:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:08:46,267 INFO L481 AbstractCegarLoop]: Abstraction has 18087 states and 19125 transitions. [2018-10-24 16:08:46,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:08:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 18087 states and 19125 transitions. [2018-10-24 16:08:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2018-10-24 16:08:46,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:08:46,297 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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 16:08:46,297 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:08:46,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:08:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1332906654, now seen corresponding path program 2 times [2018-10-24 16:08:46,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:08:46,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:08:46,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:46,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:08:46,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:08:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:08:47,398 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 6 [2018-10-24 16:08:47,791 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-10-24 16:08:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1478 proven. 43 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2018-10-24 16:08:48,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:08:48,510 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:08:48,520 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 16:08:48,784 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 16:08:48,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 16:08:48,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:08:49,523 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a23~0_483 Int)) (let ((.cse0 (mod (+ v_~a23~0_483 135992) 299846))) (and (< (+ v_~a23~0_483 435838) 0) (<= c_~a23~0 (+ .cse0 306)) (not (= 0 .cse0))))) (exists ((v_prenex_179 Int)) (let ((.cse1 (mod (+ v_prenex_179 135992) 299846))) (and (= 0 .cse1) (<= c_~a23~0 (+ .cse1 300152))))) (exists ((v_prenex_180 Int)) (and (<= c_~a23~0 (+ (mod (+ v_prenex_180 135992) 299846) 300152)) (<= 0 (+ v_prenex_180 435838))))) is different from true [2018-10-24 16:08:51,613 WARN L179 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2018-10-24 16:08:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1344 proven. 43 refuted. 0 times theorem prover too weak. 1209 trivial. 134 not checked. [2018-10-24 16:08:54,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:08:54,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2018-10-24 16:08:54,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:08:54,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:08:54,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=25, Unknown=2, NotChecked=10, Total=56 [2018-10-24 16:08:54,136 INFO L87 Difference]: Start difference. First operand 18087 states and 19125 transitions. Second operand 8 states. [2018-10-24 16:09:54,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:09:54,492 INFO L93 Difference]: Finished difference Result 38233 states and 40390 transitions. [2018-10-24 16:09:54,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:09:54,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 984 [2018-10-24 16:09:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:09:54,493 INFO L225 Difference]: With dead ends: 38233 [2018-10-24 16:09:54,493 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:09:54,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 982 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=19, Invalid=25, Unknown=2, NotChecked=10, Total=56 [2018-10-24 16:09:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:09:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:09:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:09:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:09:54,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 984 [2018-10-24 16:09:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:09:54,507 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:09:54,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:09:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:09:54,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:09:54,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:09:54,629 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:54,704 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:55,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:55,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:55,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:56,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:56,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:56,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:56,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:56,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:57,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:57,599 WARN L179 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 961 DAG size of output: 849 [2018-10-24 16:09:57,639 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:57,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:58,257 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:58,719 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:58,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:58,825 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:58,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:58,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:58,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:59,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:09:59,915 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:10:00,023 WARN L179 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 974 DAG size of output: 869 Received shutdown request... [2018-10-24 16:10:36,655 WARN L187 SmtUtils]: Removed 77 from assertion stack [2018-10-24 16:10:36,655 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:10:36,656 INFO L168 Benchmark]: Toolchain (without parser) took 236471.78 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:10:36,657 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:10:36,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 917.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:10:36,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:10:36,659 INFO L168 Benchmark]: Boogie Preprocessor took 153.21 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:10:36,659 INFO L168 Benchmark]: RCFGBuilder took 4988.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.3 MB). Peak memory consumption was 187.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:10:36,660 INFO L168 Benchmark]: TraceAbstraction took 230115.64 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 16:10:36,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 917.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 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 291.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.21 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4988.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.3 MB). Peak memory consumption was 187.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230115.64 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 831. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown