java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:16:20,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:16:20,369 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:16:20,381 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:16:20,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:16:20,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:16:20,384 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:16:20,386 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:16:20,388 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:16:20,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:16:20,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:16:20,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:16:20,391 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:16:20,392 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:16:20,393 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:16:20,394 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:16:20,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:16:20,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:16:20,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:16:20,401 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:16:20,402 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:16:20,403 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:16:20,406 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:16:20,406 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:16:20,406 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:16:20,407 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:16:20,408 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:16:20,409 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:16:20,410 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:16:20,411 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:16:20,412 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:16:20,412 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:16:20,415 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:16:20,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:16:20,432 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:16:20,433 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:16:20,433 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:16:20,434 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:16:20,434 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:16:20,434 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:16:20,434 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:16:20,434 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:16:20,435 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:16:20,435 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:16:20,435 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:16:20,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:16:20,435 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:16:20,436 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:16:20,436 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:16:20,436 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:16:20,436 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:16:20,436 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:16:20,437 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:16:20,437 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:16:20,437 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:16:20,437 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:16:20,437 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:16:20,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:16:20,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:16:20,438 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:16:20,438 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:16:20,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:16:20,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:16:20,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:16:20,508 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:16:20,508 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:16:20,508 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-11-06 21:16:20,569 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6e17c649/edc26f75974641489431247337e1858d/FLAGfca806ee4 [2018-11-06 21:16:21,462 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:16:21,463 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-11-06 21:16:21,509 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6e17c649/edc26f75974641489431247337e1858d/FLAGfca806ee4 [2018-11-06 21:16:21,531 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6e17c649/edc26f75974641489431247337e1858d [2018-11-06 21:16:21,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:16:21,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:16:21,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:16:21,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:16:21,557 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:16:21,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:21" (1/1) ... [2018-11-06 21:16:21,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:21, skipping insertion in model container [2018-11-06 21:16:21,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:21" (1/1) ... [2018-11-06 21:16:21,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:16:21,763 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:16:23,156 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:16:23,160 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:16:23,890 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:16:23,927 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:16:23,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23 WrapperNode [2018-11-06 21:16:23,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:16:23,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:16:23,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:16:23,933 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:16:23,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:24,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:24,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:16:24,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:16:24,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:16:24,760 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:16:24,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:24,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:24,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:24,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:25,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:25,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:25,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... [2018-11-06 21:16:25,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:16:25,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:16:25,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:16:25,415 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:16:25,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:16:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:16:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:16:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:16:37,173 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:16:37,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:37 BoogieIcfgContainer [2018-11-06 21:16:37,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:16:37,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:16:37,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:16:37,179 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:16:37,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:16:21" (1/3) ... [2018-11-06 21:16:37,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753e00e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:37, skipping insertion in model container [2018-11-06 21:16:37,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:23" (2/3) ... [2018-11-06 21:16:37,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753e00e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:37, skipping insertion in model container [2018-11-06 21:16:37,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:37" (3/3) ... [2018-11-06 21:16:37,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10_true-unreach-call.c [2018-11-06 21:16:37,196 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:16:37,206 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:16:37,224 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:16:37,270 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:16:37,271 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:16:37,271 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:16:37,271 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:16:37,271 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:16:37,271 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:16:37,272 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:16:37,272 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:16:37,272 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:16:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-11-06 21:16:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-06 21:16:37,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:37,322 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:16:37,324 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:37,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1660793902, now seen corresponding path program 1 times [2018-11-06 21:16:37,334 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:37,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:37,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:37,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:37,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:37,771 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 21:16:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:37,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:37,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:16:37,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:16:37,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:16:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:37,894 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-11-06 21:16:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:50,571 INFO L93 Difference]: Finished difference Result 3879 states and 7287 transitions. [2018-11-06 21:16:50,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:16:50,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-06 21:16:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:50,615 INFO L225 Difference]: With dead ends: 3879 [2018-11-06 21:16:50,615 INFO L226 Difference]: Without dead ends: 2773 [2018-11-06 21:16:50,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2018-11-06 21:16:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2742. [2018-11-06 21:16:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2018-11-06 21:16:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 4466 transitions. [2018-11-06 21:16:50,791 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 4466 transitions. Word has length 48 [2018-11-06 21:16:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:50,791 INFO L480 AbstractCegarLoop]: Abstraction has 2742 states and 4466 transitions. [2018-11-06 21:16:50,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:16:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 4466 transitions. [2018-11-06 21:16:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-06 21:16:50,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:50,799 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:16:50,799 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:50,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash 732782270, now seen corresponding path program 1 times [2018-11-06 21:16:50,800 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:50,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:50,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:50,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:50,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:51,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:51,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:16:51,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:16:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:16:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:51,310 INFO L87 Difference]: Start difference. First operand 2742 states and 4466 transitions. Second operand 5 states. [2018-11-06 21:17:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:05,958 INFO L93 Difference]: Finished difference Result 7903 states and 11941 transitions. [2018-11-06 21:17:05,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:17:05,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-11-06 21:17:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:05,984 INFO L225 Difference]: With dead ends: 7903 [2018-11-06 21:17:05,984 INFO L226 Difference]: Without dead ends: 5163 [2018-11-06 21:17:05,989 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2018-11-06 21:17:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 4329. [2018-11-06 21:17:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4329 states. [2018-11-06 21:17:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 6259 transitions. [2018-11-06 21:17:06,076 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 6259 transitions. Word has length 138 [2018-11-06 21:17:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:06,077 INFO L480 AbstractCegarLoop]: Abstraction has 4329 states and 6259 transitions. [2018-11-06 21:17:06,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:17:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 6259 transitions. [2018-11-06 21:17:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-06 21:17:06,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:06,087 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:17:06,087 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:06,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:06,087 INFO L82 PathProgramCache]: Analyzing trace with hash -521279062, now seen corresponding path program 1 times [2018-11-06 21:17:06,087 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:06,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:06,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:06,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:06,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:17:06,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:06,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:17:06,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:17:06,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:17:06,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:06,420 INFO L87 Difference]: Start difference. First operand 4329 states and 6259 transitions. Second operand 4 states. [2018-11-06 21:17:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:15,937 INFO L93 Difference]: Finished difference Result 15814 states and 23234 transitions. [2018-11-06 21:17:15,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:15,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-11-06 21:17:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:15,990 INFO L225 Difference]: With dead ends: 15814 [2018-11-06 21:17:15,990 INFO L226 Difference]: Without dead ends: 11487 [2018-11-06 21:17:15,998 INFO L604 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 [2018-11-06 21:17:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11487 states. [2018-11-06 21:17:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11487 to 11481. [2018-11-06 21:17:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11481 states. [2018-11-06 21:17:16,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 15626 transitions. [2018-11-06 21:17:16,217 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 15626 transitions. Word has length 149 [2018-11-06 21:17:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:16,218 INFO L480 AbstractCegarLoop]: Abstraction has 11481 states and 15626 transitions. [2018-11-06 21:17:16,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 15626 transitions. [2018-11-06 21:17:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-06 21:17:16,225 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:16,226 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:17:16,226 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:16,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:16,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1137953308, now seen corresponding path program 1 times [2018-11-06 21:17:16,230 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:16,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:16,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:16,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:16,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:16,673 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:17:16,809 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:17:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-06 21:17:17,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:17,021 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:17:17,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:17,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-11-06 21:17:17,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:17,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-11-06 21:17:17,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:17:17,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:17:17,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:17:17,245 INFO L87 Difference]: Start difference. First operand 11481 states and 15626 transitions. Second operand 6 states. [2018-11-06 21:17:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:32,618 INFO L93 Difference]: Finished difference Result 57631 states and 78123 transitions. [2018-11-06 21:17:32,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:17:32,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-06 21:17:32,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:32,755 INFO L225 Difference]: With dead ends: 57631 [2018-11-06 21:17:32,755 INFO L226 Difference]: Without dead ends: 46152 [2018-11-06 21:17:32,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:17:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46152 states. [2018-11-06 21:17:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46152 to 46150. [2018-11-06 21:17:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46150 states. [2018-11-06 21:17:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46150 states to 46150 states and 54728 transitions. [2018-11-06 21:17:33,635 INFO L78 Accepts]: Start accepts. Automaton has 46150 states and 54728 transitions. Word has length 211 [2018-11-06 21:17:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:33,636 INFO L480 AbstractCegarLoop]: Abstraction has 46150 states and 54728 transitions. [2018-11-06 21:17:33,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:17:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 46150 states and 54728 transitions. [2018-11-06 21:17:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-11-06 21:17:33,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:33,657 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:17:33,658 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:33,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:33,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1213036563, now seen corresponding path program 1 times [2018-11-06 21:17:33,659 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:33,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:33,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:33,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:33,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 516 proven. 9 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-11-06 21:17:34,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:34,674 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:17:34,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:34,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-11-06 21:17:35,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:35,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 21:17:35,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:17:35,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:17:35,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:35,122 INFO L87 Difference]: Start difference. First operand 46150 states and 54728 transitions. Second operand 5 states. [2018-11-06 21:17:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:47,655 INFO L93 Difference]: Finished difference Result 110441 states and 133773 transitions. [2018-11-06 21:17:47,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:17:47,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 408 [2018-11-06 21:17:47,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:47,782 INFO L225 Difference]: With dead ends: 110441 [2018-11-06 21:17:47,783 INFO L226 Difference]: Without dead ends: 65081 [2018-11-06 21:17:47,839 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65081 states. [2018-11-06 21:17:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65081 to 65058. [2018-11-06 21:17:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65058 states. [2018-11-06 21:17:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65058 states to 65058 states and 75080 transitions. [2018-11-06 21:17:48,690 INFO L78 Accepts]: Start accepts. Automaton has 65058 states and 75080 transitions. Word has length 408 [2018-11-06 21:17:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:48,691 INFO L480 AbstractCegarLoop]: Abstraction has 65058 states and 75080 transitions. [2018-11-06 21:17:48,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:17:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 65058 states and 75080 transitions. [2018-11-06 21:17:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-06 21:17:48,711 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:48,712 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:17:48,712 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:48,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1975342543, now seen corresponding path program 1 times [2018-11-06 21:17:48,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:48,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:48,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:48,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:48,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:49,328 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:17:50,269 WARN L179 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:17:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 378 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-06 21:17:50,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:50,760 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:17:50,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:50,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-06 21:17:51,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:51,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 21:17:51,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:17:51,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:17:51,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:17:51,150 INFO L87 Difference]: Start difference. First operand 65058 states and 75080 transitions. Second operand 8 states. [2018-11-06 21:18:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:14,656 INFO L93 Difference]: Finished difference Result 170316 states and 196463 transitions. [2018-11-06 21:18:14,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:18:14,657 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 411 [2018-11-06 21:18:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:14,860 INFO L225 Difference]: With dead ends: 170316 [2018-11-06 21:18:14,860 INFO L226 Difference]: Without dead ends: 106048 [2018-11-06 21:18:14,910 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 415 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:18:14,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106048 states. [2018-11-06 21:18:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106048 to 98935. [2018-11-06 21:18:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98935 states. [2018-11-06 21:18:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98935 states to 98935 states and 110632 transitions. [2018-11-06 21:18:15,990 INFO L78 Accepts]: Start accepts. Automaton has 98935 states and 110632 transitions. Word has length 411 [2018-11-06 21:18:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:15,991 INFO L480 AbstractCegarLoop]: Abstraction has 98935 states and 110632 transitions. [2018-11-06 21:18:15,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:18:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 98935 states and 110632 transitions. [2018-11-06 21:18:16,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-11-06 21:18:16,016 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:16,016 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:18:16,016 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:16,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1539898024, now seen corresponding path program 1 times [2018-11-06 21:18:16,017 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:16,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:16,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:16,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:16,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-06 21:18:16,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:16,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:18:16,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:18:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:18:16,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:18:16,367 INFO L87 Difference]: Start difference. First operand 98935 states and 110632 transitions. Second operand 3 states. [2018-11-06 21:18:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:23,240 INFO L93 Difference]: Finished difference Result 197064 states and 220335 transitions. [2018-11-06 21:18:23,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:18:23,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 438 [2018-11-06 21:18:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:23,363 INFO L225 Difference]: With dead ends: 197064 [2018-11-06 21:18:23,363 INFO L226 Difference]: Without dead ends: 84685 [2018-11-06 21:18:23,424 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:18:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84685 states. [2018-11-06 21:18:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84685 to 83107. [2018-11-06 21:18:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83107 states. [2018-11-06 21:18:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83107 states to 83107 states and 90075 transitions. [2018-11-06 21:18:24,255 INFO L78 Accepts]: Start accepts. Automaton has 83107 states and 90075 transitions. Word has length 438 [2018-11-06 21:18:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:24,255 INFO L480 AbstractCegarLoop]: Abstraction has 83107 states and 90075 transitions. [2018-11-06 21:18:24,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:18:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 83107 states and 90075 transitions. [2018-11-06 21:18:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-11-06 21:18:24,273 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:24,274 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:18:24,274 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:24,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:24,274 INFO L82 PathProgramCache]: Analyzing trace with hash 770055196, now seen corresponding path program 1 times [2018-11-06 21:18:24,275 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:24,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:24,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:24,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:24,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 9 proven. 82 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 21:18:24,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:18:24,877 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:18:24,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:25,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:18:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 21:18:25,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:18:25,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-11-06 21:18:25,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:18:25,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:18:25,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:25,249 INFO L87 Difference]: Start difference. First operand 83107 states and 90075 transitions. Second operand 5 states. [2018-11-06 21:18:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:38,600 INFO L93 Difference]: Finished difference Result 238758 states and 258829 transitions. [2018-11-06 21:18:38,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:18:38,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 454 [2018-11-06 21:18:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:38,814 INFO L225 Difference]: With dead ends: 238758 [2018-11-06 21:18:38,814 INFO L226 Difference]: Without dead ends: 156441 [2018-11-06 21:18:38,882 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 453 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156441 states. [2018-11-06 21:18:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156441 to 149334. [2018-11-06 21:18:41,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149334 states. [2018-11-06 21:18:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149334 states to 149334 states and 159354 transitions. [2018-11-06 21:18:41,495 INFO L78 Accepts]: Start accepts. Automaton has 149334 states and 159354 transitions. Word has length 454 [2018-11-06 21:18:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:41,496 INFO L480 AbstractCegarLoop]: Abstraction has 149334 states and 159354 transitions. [2018-11-06 21:18:41,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:18:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 149334 states and 159354 transitions. [2018-11-06 21:18:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-11-06 21:18:41,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:41,510 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-11-06 21:18:41,511 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:41,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1972376893, now seen corresponding path program 1 times [2018-11-06 21:18:41,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:41,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:41,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:41,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:41,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-11-06 21:18:41,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:41,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:18:41,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:18:41,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:18:41,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:41,985 INFO L87 Difference]: Start difference. First operand 149334 states and 159354 transitions. Second operand 5 states. [2018-11-06 21:18:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:59,193 INFO L93 Difference]: Finished difference Result 458922 states and 490373 transitions. [2018-11-06 21:18:59,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:18:59,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 499 [2018-11-06 21:18:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:59,593 INFO L225 Difference]: With dead ends: 458922 [2018-11-06 21:18:59,593 INFO L226 Difference]: Without dead ends: 310378 [2018-11-06 21:18:59,690 INFO L604 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 [2018-11-06 21:18:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310378 states. [2018-11-06 21:19:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310378 to 286526. [2018-11-06 21:19:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286526 states. [2018-11-06 21:19:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286526 states to 286526 states and 304148 transitions. [2018-11-06 21:19:03,581 INFO L78 Accepts]: Start accepts. Automaton has 286526 states and 304148 transitions. Word has length 499 [2018-11-06 21:19:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:03,582 INFO L480 AbstractCegarLoop]: Abstraction has 286526 states and 304148 transitions. [2018-11-06 21:19:03,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:19:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 286526 states and 304148 transitions. [2018-11-06 21:19:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-11-06 21:19:03,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:03,602 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-06 21:19:03,602 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:03,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:03,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1661633254, now seen corresponding path program 1 times [2018-11-06 21:19:03,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:03,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:03,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:03,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:03,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:04,230 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:19:04,394 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-11-06 21:19:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 54 proven. 497 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-06 21:19:06,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:19:06,799 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:19:06,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:06,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:19:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-06 21:19:07,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:19:07,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2018-11-06 21:19:07,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 21:19:07,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 21:19:07,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:19:07,237 INFO L87 Difference]: Start difference. First operand 286526 states and 304148 transitions. Second operand 13 states. [2018-11-06 21:19:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:52,264 INFO L93 Difference]: Finished difference Result 580366 states and 616260 transitions. [2018-11-06 21:19:52,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 21:19:52,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 531 [2018-11-06 21:19:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:53,099 INFO L225 Difference]: With dead ends: 580366 [2018-11-06 21:19:53,099 INFO L226 Difference]: Without dead ends: 294626 [2018-11-06 21:19:53,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 537 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2018-11-06 21:19:53,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294626 states. [2018-11-06 21:19:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294626 to 278317. [2018-11-06 21:19:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278317 states. [2018-11-06 21:19:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278317 states to 278317 states and 289294 transitions. [2018-11-06 21:19:56,067 INFO L78 Accepts]: Start accepts. Automaton has 278317 states and 289294 transitions. Word has length 531 [2018-11-06 21:19:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:56,068 INFO L480 AbstractCegarLoop]: Abstraction has 278317 states and 289294 transitions. [2018-11-06 21:19:56,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 21:19:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 278317 states and 289294 transitions. [2018-11-06 21:19:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2018-11-06 21:19:56,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:56,107 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:19:56,107 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:56,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash -953983250, now seen corresponding path program 1 times [2018-11-06 21:19:56,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:56,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:56,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:56,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:56,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:56,607 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 21:19:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 650 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-06 21:19:57,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:57,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:19:57,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:57,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:57,749 INFO L87 Difference]: Start difference. First operand 278317 states and 289294 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 21:20:05,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:20:05,417 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:20:05,423 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:20:05,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:20:05 BoogieIcfgContainer [2018-11-06 21:20:05,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:20:05,424 INFO L168 Benchmark]: Toolchain (without parser) took 223877.50 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:20:05,425 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-06 21:20:05,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2378.68 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. [2018-11-06 21:20:05,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 829.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -997.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:20:05,428 INFO L168 Benchmark]: Boogie Preprocessor took 655.12 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: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:20:05,428 INFO L168 Benchmark]: RCFGBuilder took 11759.50 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 53.8 MB). Peak memory consumption was 583.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:20:05,429 INFO L168 Benchmark]: TraceAbstraction took 208248.29 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 790.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:20:05,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 2378.68 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 829.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -997.8 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 655.12 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: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11759.50 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 53.8 MB). Peak memory consumption was 583.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208248.29 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 790.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (278317states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (153842 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 181.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9339 SDtfs, 50094 SDslu, 5486 SDs, 0 SdLazy, 104048 SolverSat, 17548 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 142.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2099 GetRequests, 2032 SyntacticMatches, 13 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286526occurred in iteration=9, 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: 13.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 56855 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 5982 NumberOfCodeBlocks, 5982 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5966 ConstructedInterpolants, 0 QuantifiedInterpolants, 10025797 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2647 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 6635/7231 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown