java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:16:02,428 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:16:02,430 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:16:02,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:16:02,441 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:16:02,442 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:16:02,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:16:02,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:16:02,447 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:16:02,448 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:16:02,449 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:16:02,449 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:16:02,450 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:16:02,451 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:16:02,453 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:16:02,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:16:02,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:16:02,456 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:16:02,458 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:16:02,460 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:16:02,461 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:16:02,462 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:16:02,465 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:16:02,465 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:16:02,466 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:16:02,467 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:16:02,468 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:16:02,468 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:16:02,469 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:16:02,471 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:16:02,471 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:16:02,472 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 20:16:02,472 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 20:16:02,472 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 20:16:02,473 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 20:16:02,477 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 20:16:02,478 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 [2018-10-23 20:16:02,492 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:16:02,493 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:16:02,493 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:16:02,494 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:16:02,494 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:16:02,494 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:16:02,495 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:16:02,495 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:16:02,495 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:16:02,495 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:16:02,495 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:16:02,496 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:16:02,496 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:16:02,496 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:16:02,496 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:16:02,496 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:16:02,497 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:16:02,497 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:16:02,497 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:16:02,497 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:16:02,498 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:16:02,498 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:16:02,498 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:16:02,498 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:16:02,498 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:16:02,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:16:02,499 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:16:02,499 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:16:02,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:16:02,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:16:02,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:16:02,565 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:16:02,565 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:16:02,566 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-10-23 20:16:02,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83f7620f5/35ffcefcb531443485cbd33de6c356b0/FLAG5cda26ace [2018-10-23 20:16:03,463 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:16:03,464 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-10-23 20:16:03,495 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83f7620f5/35ffcefcb531443485cbd33de6c356b0/FLAG5cda26ace [2018-10-23 20:16:03,511 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83f7620f5/35ffcefcb531443485cbd33de6c356b0 [2018-10-23 20:16:03,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:16:03,526 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:16:03,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:16:03,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:16:03,534 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:16:03,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:16:03" (1/1) ... [2018-10-23 20:16:03,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:03, skipping insertion in model container [2018-10-23 20:16:03,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:16:03" (1/1) ... [2018-10-23 20:16:03,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:16:03,740 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:16:05,314 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:16:05,320 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:16:06,024 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:16:06,060 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:16:06,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06 WrapperNode [2018-10-23 20:16:06,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:16:06,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:16:06,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:16:06,063 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:16:06,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:06,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:06,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:16:06,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:16:06,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:16:06,913 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:16:06,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:06,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:07,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:07,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:07,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:07,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:07,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (1/1) ... [2018-10-23 20:16:07,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:16:07,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:16:07,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:16:07,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:16:07,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (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 [2018-10-23 20:16:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:16:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:16:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:16:23,151 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:16:23,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:23 BoogieIcfgContainer [2018-10-23 20:16:23,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:16:23,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:16:23,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:16:23,157 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:16:23,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:16:03" (1/3) ... [2018-10-23 20:16:23,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1488b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:23, skipping insertion in model container [2018-10-23 20:16:23,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:06" (2/3) ... [2018-10-23 20:16:23,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1488b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:23, skipping insertion in model container [2018-10-23 20:16:23,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:23" (3/3) ... [2018-10-23 20:16:23,162 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14_true-unreach-call.c [2018-10-23 20:16:23,172 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:16:23,186 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:16:23,204 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:16:23,262 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:16:23,262 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:16:23,262 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:16:23,262 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:16:23,263 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:16:23,263 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:16:23,263 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:16:23,263 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:16:23,263 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:16:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:16:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-23 20:16:23,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:23,330 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:23,332 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:23,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1057203130, now seen corresponding path program 1 times [2018-10-23 20:16:23,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:23,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:23,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:23,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:23,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:23,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:23,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:23,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:23,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:23,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:23,851 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:16:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:40,432 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-23 20:16:40,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:40,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-23 20:16:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:40,482 INFO L225 Difference]: With dead ends: 3896 [2018-10-23 20:16:40,482 INFO L226 Difference]: Without dead ends: 2790 [2018-10-23 20:16:40,492 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 [2018-10-23 20:16:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-23 20:16:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-23 20:16:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-23 20:16:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-23 20:16:40,664 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 42 [2018-10-23 20:16:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:40,666 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-23 20:16:40,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-23 20:16:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 20:16:40,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:40,676 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:40,676 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:40,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1784623294, now seen corresponding path program 1 times [2018-10-23 20:16:40,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:40,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:40,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:40,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:40,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:41,169 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:16:41,349 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:16:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:41,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:41,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:16:41,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:16:41,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:16:41,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:16:41,740 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-23 20:16:41,985 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:16:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:58,185 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-23 20:16:58,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:16:58,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-10-23 20:16:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:58,211 INFO L225 Difference]: With dead ends: 7061 [2018-10-23 20:16:58,212 INFO L226 Difference]: Without dead ends: 5118 [2018-10-23 20:16:58,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:16:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-23 20:16:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-23 20:16:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-23 20:16:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-23 20:16:58,312 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 108 [2018-10-23 20:16:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:58,313 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-23 20:16:58,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:16:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-23 20:16:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-23 20:16:58,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:58,317 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:58,318 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:58,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:58,318 INFO L82 PathProgramCache]: Analyzing trace with hash 348733509, now seen corresponding path program 1 times [2018-10-23 20:16:58,318 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:58,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:58,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:58,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:58,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-23 20:16:58,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:16:58,571 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 [2018-10-23 20:16:58,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:58,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:16:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-23 20:16:58,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:16:58,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:16:58,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:16:58,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:16:58,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:16:58,867 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-23 20:17:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:11,223 INFO L93 Difference]: Finished difference Result 15791 states and 24940 transitions. [2018-10-23 20:17:11,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:11,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2018-10-23 20:17:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:11,278 INFO L225 Difference]: With dead ends: 15791 [2018-10-23 20:17:11,279 INFO L226 Difference]: Without dead ends: 11464 [2018-10-23 20:17:11,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:17:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2018-10-23 20:17:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11436. [2018-10-23 20:17:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-23 20:17:11,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15966 transitions. [2018-10-23 20:17:11,488 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15966 transitions. Word has length 168 [2018-10-23 20:17:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:11,489 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15966 transitions. [2018-10-23 20:17:11,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:17:11,490 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15966 transitions. [2018-10-23 20:17:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-23 20:17:11,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:11,496 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:11,496 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:11,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1865837237, now seen corresponding path program 1 times [2018-10-23 20:17:11,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:11,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:11,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:11,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:11,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 79 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-23 20:17:11,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:17:11,882 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 [2018-10-23 20:17:11,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:11,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:17:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:17:12,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:17:12,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:17:12,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:12,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:12,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:12,121 INFO L87 Difference]: Start difference. First operand 11436 states and 15966 transitions. Second operand 4 states. [2018-10-23 20:17:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:22,337 INFO L93 Difference]: Finished difference Result 37884 states and 53982 transitions. [2018-10-23 20:17:22,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:22,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-23 20:17:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:22,449 INFO L225 Difference]: With dead ends: 37884 [2018-10-23 20:17:22,450 INFO L226 Difference]: Without dead ends: 27238 [2018-10-23 20:17:22,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:22,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2018-10-23 20:17:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 20891. [2018-10-23 20:17:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20891 states. [2018-10-23 20:17:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20891 states to 20891 states and 27229 transitions. [2018-10-23 20:17:22,881 INFO L78 Accepts]: Start accepts. Automaton has 20891 states and 27229 transitions. Word has length 248 [2018-10-23 20:17:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:22,882 INFO L481 AbstractCegarLoop]: Abstraction has 20891 states and 27229 transitions. [2018-10-23 20:17:22,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 20891 states and 27229 transitions. [2018-10-23 20:17:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-23 20:17:22,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:22,890 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:22,890 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:22,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash 572898249, now seen corresponding path program 1 times [2018-10-23 20:17:22,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:22,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:22,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:22,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:22,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-23 20:17:23,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:23,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:17:23,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:17:23,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:17:23,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:17:23,200 INFO L87 Difference]: Start difference. First operand 20891 states and 27229 transitions. Second operand 3 states. [2018-10-23 20:17:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:30,024 INFO L93 Difference]: Finished difference Result 59901 states and 78777 transitions. [2018-10-23 20:17:30,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:17:30,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-10-23 20:17:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:30,092 INFO L225 Difference]: With dead ends: 59901 [2018-10-23 20:17:30,093 INFO L226 Difference]: Without dead ends: 39800 [2018-10-23 20:17:30,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:17:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39800 states. [2018-10-23 20:17:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39800 to 39799. [2018-10-23 20:17:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39799 states. [2018-10-23 20:17:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39799 states to 39799 states and 48745 transitions. [2018-10-23 20:17:30,627 INFO L78 Accepts]: Start accepts. Automaton has 39799 states and 48745 transitions. Word has length 274 [2018-10-23 20:17:30,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:30,628 INFO L481 AbstractCegarLoop]: Abstraction has 39799 states and 48745 transitions. [2018-10-23 20:17:30,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:17:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 39799 states and 48745 transitions. [2018-10-23 20:17:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-10-23 20:17:30,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:30,643 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:30,643 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:30,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash -355408056, now seen corresponding path program 1 times [2018-10-23 20:17:30,644 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:30,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:30,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:30,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:30,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:31,242 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 20:17:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 288 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-23 20:17:31,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:17:31,446 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 [2018-10-23 20:17:31,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:31,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:17:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-23 20:17:31,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:17:31,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:17:31,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:31,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:31,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:31,780 INFO L87 Difference]: Start difference. First operand 39799 states and 48745 transitions. Second operand 4 states. [2018-10-23 20:17:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:40,092 INFO L93 Difference]: Finished difference Result 96185 states and 115633 transitions. [2018-10-23 20:17:40,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:40,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 371 [2018-10-23 20:17:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:40,187 INFO L225 Difference]: With dead ends: 96185 [2018-10-23 20:17:40,187 INFO L226 Difference]: Without dead ends: 57176 [2018-10-23 20:17:40,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57176 states. [2018-10-23 20:17:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57176 to 48469. [2018-10-23 20:17:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48469 states. [2018-10-23 20:17:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48469 states to 48469 states and 58131 transitions. [2018-10-23 20:17:40,862 INFO L78 Accepts]: Start accepts. Automaton has 48469 states and 58131 transitions. Word has length 371 [2018-10-23 20:17:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:40,862 INFO L481 AbstractCegarLoop]: Abstraction has 48469 states and 58131 transitions. [2018-10-23 20:17:40,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 48469 states and 58131 transitions. [2018-10-23 20:17:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-23 20:17:40,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:40,879 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:40,880 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:40,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1810747960, now seen corresponding path program 1 times [2018-10-23 20:17:40,880 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:40,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:40,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:40,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:40,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-23 20:17:41,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:41,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:17:41,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:41,299 INFO L87 Difference]: Start difference. First operand 48469 states and 58131 transitions. Second operand 4 states. [2018-10-23 20:17:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:54,256 INFO L93 Difference]: Finished difference Result 125335 states and 152252 transitions. [2018-10-23 20:17:54,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:54,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2018-10-23 20:17:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:54,352 INFO L225 Difference]: With dead ends: 125335 [2018-10-23 20:17:54,352 INFO L226 Difference]: Without dead ends: 77656 [2018-10-23 20:17:54,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77656 states. [2018-10-23 20:17:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77656 to 75262. [2018-10-23 20:17:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75262 states. [2018-10-23 20:17:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75262 states to 75262 states and 88109 transitions. [2018-10-23 20:17:55,302 INFO L78 Accepts]: Start accepts. Automaton has 75262 states and 88109 transitions. Word has length 377 [2018-10-23 20:17:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:55,303 INFO L481 AbstractCegarLoop]: Abstraction has 75262 states and 88109 transitions. [2018-10-23 20:17:55,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 75262 states and 88109 transitions. [2018-10-23 20:17:55,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-23 20:17:55,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:55,320 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:55,321 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:55,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:55,321 INFO L82 PathProgramCache]: Analyzing trace with hash 299456529, now seen corresponding path program 1 times [2018-10-23 20:17:55,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:55,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:55,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:55,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:55,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-23 20:17:55,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:55,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:17:55,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:55,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:55,719 INFO L87 Difference]: Start difference. First operand 75262 states and 88109 transitions. Second operand 4 states. [2018-10-23 20:18:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:04,784 INFO L93 Difference]: Finished difference Result 160764 states and 187592 transitions. [2018-10-23 20:18:04,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:04,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2018-10-23 20:18:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:04,879 INFO L225 Difference]: With dead ends: 160764 [2018-10-23 20:18:04,879 INFO L226 Difference]: Without dead ends: 74414 [2018-10-23 20:18:04,926 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 [2018-10-23 20:18:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74414 states. [2018-10-23 20:18:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74414 to 64957. [2018-10-23 20:18:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64957 states. [2018-10-23 20:18:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64957 states to 64957 states and 74656 transitions. [2018-10-23 20:18:05,788 INFO L78 Accepts]: Start accepts. Automaton has 64957 states and 74656 transitions. Word has length 400 [2018-10-23 20:18:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:05,789 INFO L481 AbstractCegarLoop]: Abstraction has 64957 states and 74656 transitions. [2018-10-23 20:18:05,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:18:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 64957 states and 74656 transitions. [2018-10-23 20:18:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-10-23 20:18:05,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:05,808 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:05,809 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:05,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:05,809 INFO L82 PathProgramCache]: Analyzing trace with hash -161767708, now seen corresponding path program 1 times [2018-10-23 20:18:05,809 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:05,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:05,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:05,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:05,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-10-23 20:18:06,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:06,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:18:06,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:18:06,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:18:06,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:06,290 INFO L87 Difference]: Start difference. First operand 64957 states and 74656 transitions. Second operand 5 states. [2018-10-23 20:18:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:28,396 INFO L93 Difference]: Finished difference Result 243659 states and 281129 transitions. [2018-10-23 20:18:28,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:18:28,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 437 [2018-10-23 20:18:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:28,605 INFO L225 Difference]: With dead ends: 243659 [2018-10-23 20:18:28,605 INFO L226 Difference]: Without dead ends: 179489 [2018-10-23 20:18:28,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179489 states. [2018-10-23 20:18:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179489 to 170640. [2018-10-23 20:18:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170640 states. [2018-10-23 20:18:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170640 states to 170640 states and 192520 transitions. [2018-10-23 20:18:30,288 INFO L78 Accepts]: Start accepts. Automaton has 170640 states and 192520 transitions. Word has length 437 [2018-10-23 20:18:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:30,288 INFO L481 AbstractCegarLoop]: Abstraction has 170640 states and 192520 transitions. [2018-10-23 20:18:30,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:18:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 170640 states and 192520 transitions. [2018-10-23 20:18:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-23 20:18:30,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:30,305 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:30,305 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:30,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:30,305 INFO L82 PathProgramCache]: Analyzing trace with hash -53402876, now seen corresponding path program 1 times [2018-10-23 20:18:30,305 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:30,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:30,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:30,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:30,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 411 proven. 40 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:18:32,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:18:32,090 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 [2018-10-23 20:18:32,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:32,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:18:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-10-23 20:18:32,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:18:32,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:18:32,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:18:32,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:18:32,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:32,489 INFO L87 Difference]: Start difference. First operand 170640 states and 192520 transitions. Second operand 5 states. [2018-10-23 20:18:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:41,899 INFO L93 Difference]: Finished difference Result 344414 states and 389543 transitions. [2018-10-23 20:18:41,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:41,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-10-23 20:18:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:42,138 INFO L225 Difference]: With dead ends: 344414 [2018-10-23 20:18:42,138 INFO L226 Difference]: Without dead ends: 174564 [2018-10-23 20:18:42,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 468 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174564 states. [2018-10-23 20:18:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174564 to 172987. [2018-10-23 20:18:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172987 states. [2018-10-23 20:18:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172987 states to 172987 states and 187869 transitions. [2018-10-23 20:18:43,896 INFO L78 Accepts]: Start accepts. Automaton has 172987 states and 187869 transitions. Word has length 467 [2018-10-23 20:18:43,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:43,897 INFO L481 AbstractCegarLoop]: Abstraction has 172987 states and 187869 transitions. [2018-10-23 20:18:43,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:18:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 172987 states and 187869 transitions. [2018-10-23 20:18:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-10-23 20:18:43,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:43,917 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:43,917 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:43,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:43,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1412837417, now seen corresponding path program 1 times [2018-10-23 20:18:43,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:43,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:43,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:43,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:43,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-23 20:18:45,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:45,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:18:45,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:18:45,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:18:45,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:18:45,250 INFO L87 Difference]: Start difference. First operand 172987 states and 187869 transitions. Second operand 3 states. [2018-10-23 20:18:49,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:49,308 INFO L93 Difference]: Finished difference Result 343593 states and 372966 transitions. [2018-10-23 20:18:49,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:18:49,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 532 [2018-10-23 20:18:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:49,527 INFO L225 Difference]: With dead ends: 343593 [2018-10-23 20:18:49,527 INFO L226 Difference]: Without dead ends: 171393 [2018-10-23 20:18:49,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:18:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171393 states. [2018-10-23 20:18:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171393 to 171393. [2018-10-23 20:18:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171393 states. [2018-10-23 20:18:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171393 states to 171393 states and 185857 transitions. [2018-10-23 20:18:52,226 INFO L78 Accepts]: Start accepts. Automaton has 171393 states and 185857 transitions. Word has length 532 [2018-10-23 20:18:52,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:52,227 INFO L481 AbstractCegarLoop]: Abstraction has 171393 states and 185857 transitions. [2018-10-23 20:18:52,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:18:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 171393 states and 185857 transitions. [2018-10-23 20:18:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-10-23 20:18:52,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:52,245 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:52,246 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:52,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1252638789, now seen corresponding path program 1 times [2018-10-23 20:18:52,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:52,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:52,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:52,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:52,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-23 20:18:52,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:52,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:18:52,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:52,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:52,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:52,708 INFO L87 Difference]: Start difference. First operand 171393 states and 185857 transitions. Second operand 4 states. [2018-10-23 20:19:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:06,215 INFO L93 Difference]: Finished difference Result 341239 states and 370035 transitions. [2018-10-23 20:19:06,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:06,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 581 [2018-10-23 20:19:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:06,427 INFO L225 Difference]: With dead ends: 341239 [2018-10-23 20:19:06,427 INFO L226 Difference]: Without dead ends: 170636 [2018-10-23 20:19:06,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170636 states. [2018-10-23 20:19:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170636 to 168228. [2018-10-23 20:19:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168228 states. [2018-10-23 20:19:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168228 states to 168228 states and 178391 transitions. [2018-10-23 20:19:12,867 INFO L78 Accepts]: Start accepts. Automaton has 168228 states and 178391 transitions. Word has length 581 [2018-10-23 20:19:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:12,868 INFO L481 AbstractCegarLoop]: Abstraction has 168228 states and 178391 transitions. [2018-10-23 20:19:12,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 168228 states and 178391 transitions. [2018-10-23 20:19:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-23 20:19:12,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:12,912 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:12,912 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:12,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:12,913 INFO L82 PathProgramCache]: Analyzing trace with hash -889174091, now seen corresponding path program 1 times [2018-10-23 20:19:12,913 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:12,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:12,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:12,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:12,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-23 20:19:14,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:14,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:14,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:14,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:14,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:14,517 INFO L87 Difference]: Start difference. First operand 168228 states and 178391 transitions. Second operand 4 states. [2018-10-23 20:19:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:24,254 INFO L93 Difference]: Finished difference Result 334870 states and 355138 transitions. [2018-10-23 20:19:24,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:24,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 788 [2018-10-23 20:19:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:24,439 INFO L225 Difference]: With dead ends: 334870 [2018-10-23 20:19:24,440 INFO L226 Difference]: Without dead ends: 166642 [2018-10-23 20:19:25,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166642 states. [2018-10-23 20:19:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166642 to 165065. [2018-10-23 20:19:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165065 states. [2018-10-23 20:19:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165065 states to 165065 states and 174326 transitions. [2018-10-23 20:19:26,495 INFO L78 Accepts]: Start accepts. Automaton has 165065 states and 174326 transitions. Word has length 788 [2018-10-23 20:19:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:26,496 INFO L481 AbstractCegarLoop]: Abstraction has 165065 states and 174326 transitions. [2018-10-23 20:19:26,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 165065 states and 174326 transitions. [2018-10-23 20:19:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2018-10-23 20:19:26,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:26,530 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:26,530 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:26,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1855940950, now seen corresponding path program 1 times [2018-10-23 20:19:26,531 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:26,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:26,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:26,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:26,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 940 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-10-23 20:19:28,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:28,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:28,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:28,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:28,273 INFO L87 Difference]: Start difference. First operand 165065 states and 174326 transitions. Second operand 4 states. [2018-10-23 20:19:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:38,527 INFO L93 Difference]: Finished difference Result 329341 states and 347733 transitions. [2018-10-23 20:19:38,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:38,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 799 [2018-10-23 20:19:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:38,733 INFO L225 Difference]: With dead ends: 329341 [2018-10-23 20:19:38,733 INFO L226 Difference]: Without dead ends: 165066 [2018-10-23 20:19:38,803 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 [2018-10-23 20:19:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165066 states. [2018-10-23 20:19:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165066 to 158745. [2018-10-23 20:19:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158745 states. [2018-10-23 20:19:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158745 states to 158745 states and 165451 transitions. [2018-10-23 20:19:40,349 INFO L78 Accepts]: Start accepts. Automaton has 158745 states and 165451 transitions. Word has length 799 [2018-10-23 20:19:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:40,350 INFO L481 AbstractCegarLoop]: Abstraction has 158745 states and 165451 transitions. [2018-10-23 20:19:40,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 158745 states and 165451 transitions. [2018-10-23 20:19:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2018-10-23 20:19:40,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:40,391 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:40,391 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:40,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:40,392 INFO L82 PathProgramCache]: Analyzing trace with hash 2021969542, now seen corresponding path program 1 times [2018-10-23 20:19:40,392 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:40,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:40,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:40,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:40,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:19:42,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:42,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:42,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:19:42,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:19:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:19:42,477 INFO L87 Difference]: Start difference. First operand 158745 states and 165451 transitions. Second operand 5 states. Received shutdown request... [2018-10-23 20:19:49,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:19:49,749 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:19:49,756 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:19:49,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:19:49 BoogieIcfgContainer [2018-10-23 20:19:49,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:19:49,757 INFO L168 Benchmark]: Toolchain (without parser) took 226232.51 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 20:19:49,759 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 20:19:49,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2534.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:49,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 849.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:49,761 INFO L168 Benchmark]: Boogie Preprocessor took 661.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:49,762 INFO L168 Benchmark]: RCFGBuilder took 15578.70 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 255.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -2.3 MB). Peak memory consumption was 591.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:49,763 INFO L168 Benchmark]: TraceAbstraction took 206602.73 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 896.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:49,768 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2534.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 849.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 661.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15578.70 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 255.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -2.3 MB). Peak memory consumption was 591.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206602.73 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 896.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (158745states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (46904 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.5s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 172.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10713 SDtfs, 33624 SDslu, 3468 SDs, 0 SdLazy, 64585 SolverSat, 15916 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 140.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1322 GetRequests, 1272 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172987occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 48512 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 7675 NumberOfCodeBlocks, 7675 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7656 ConstructedInterpolants, 0 QuantifiedInterpolants, 9231132 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1690 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 9855/9909 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown