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_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:23:47,462 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:23:47,465 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:23:47,480 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:23:47,481 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:23:47,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:23:47,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:23:47,491 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:23:47,493 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:23:47,494 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:23:47,495 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:23:47,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:23:47,496 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:23:47,497 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:23:47,505 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:23:47,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:23:47,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:23:47,512 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:23:47,517 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:23:47,519 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:23:47,520 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:23:47,524 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:23:47,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:23:47,529 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:23:47,529 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:23:47,530 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:23:47,531 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:23:47,533 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:23:47,534 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:23:47,535 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:23:47,535 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:23:47,536 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:23:47,536 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:23:47,536 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:23:47,537 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:23:47,538 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:23:47,538 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:23:47,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:23:47,555 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:23:47,556 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:23:47,556 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:23:47,557 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:23:47,557 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:23:47,558 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:23:47,558 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:23:47,558 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:23:47,558 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:23:47,558 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:23:47,559 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:23:47,559 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:23:47,559 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:23:47,559 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:23:47,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:23:47,559 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:23:47,560 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:23:47,561 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:23:47,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:23:47,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:23:47,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:23:47,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:23:47,562 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:23:47,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:23:47,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:23:47,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:23:47,562 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:23:47,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:23:47,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:23:47,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:23:47,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:23:47,643 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:23:47,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-10-24 16:23:47,702 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61600a502/948e5b18ced54dc49d7dcd9624106b3a/FLAG92f5c64d3 [2018-10-24 16:23:48,503 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:23:48,505 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-10-24 16:23:48,549 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61600a502/948e5b18ced54dc49d7dcd9624106b3a/FLAG92f5c64d3 [2018-10-24 16:23:48,569 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61600a502/948e5b18ced54dc49d7dcd9624106b3a [2018-10-24 16:23:48,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:23:48,584 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:23:48,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:48,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:23:48,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:23:48,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:48" (1/1) ... [2018-10-24 16:23:48,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:48, skipping insertion in model container [2018-10-24 16:23:48,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:48" (1/1) ... [2018-10-24 16:23:48,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:23:48,791 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:23:50,373 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:50,378 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:23:51,102 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:51,137 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:23:51,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51 WrapperNode [2018-10-24 16:23:51,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:51,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:51,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:23:51,140 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:23:51,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:51,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:51,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:51,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:23:51,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:23:51,971 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:23:51,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:51,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:52,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:52,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:52,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:52,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:52,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... [2018-10-24 16:23:52,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:23:52,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:23:52,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:23:52,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:23:52,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:23:52,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:23:52,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:23:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:24:05,174 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:24:05,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:24:05 BoogieIcfgContainer [2018-10-24 16:24:05,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:24:05,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:24:05,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:24:05,180 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:24:05,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:23:48" (1/3) ... [2018-10-24 16:24:05,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfb4c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:24:05, skipping insertion in model container [2018-10-24 16:24:05,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:51" (2/3) ... [2018-10-24 16:24:05,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfb4c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:24:05, skipping insertion in model container [2018-10-24 16:24:05,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:24:05" (3/3) ... [2018-10-24 16:24:05,184 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42_true-unreach-call.c [2018-10-24 16:24:05,194 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:24:05,204 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:24:05,221 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:24:05,270 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:24:05,271 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:24:05,271 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:24:05,271 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:24:05,271 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:24:05,271 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:24:05,272 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:24:05,272 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:24:05,272 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:24:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:24:05,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 16:24:05,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:05,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:05,328 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:05,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash -717159398, now seen corresponding path program 1 times [2018-10-24 16:24:05,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:05,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:05,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:05,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:05,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:06,015 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:24:06,382 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:24:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:06,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:06,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:06,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:06,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:06,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:06,667 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-24 16:24:06,948 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:24:27,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:27,899 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-24 16:24:27,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:24:27,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2018-10-24 16:24:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:27,952 INFO L225 Difference]: With dead ends: 4624 [2018-10-24 16:24:27,952 INFO L226 Difference]: Without dead ends: 3515 [2018-10-24 16:24:27,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:24:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-24 16:24:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-24 16:24:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-24 16:24:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-24 16:24:28,165 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 66 [2018-10-24 16:24:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:28,166 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-24 16:24:28,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-24 16:24:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 16:24:28,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:28,178 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, 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] [2018-10-24 16:24:28,178 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:28,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:28,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1852669477, now seen corresponding path program 1 times [2018-10-24 16:24:28,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:28,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:28,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:28,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:28,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:28,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:28,699 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:24:28,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:28,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:29,010 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:24:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 49 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:29,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:24:29,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-24 16:24:29,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:24:29,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:24:29,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:24:29,608 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 8 states. [2018-10-24 16:25:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:22,917 INFO L93 Difference]: Finished difference Result 24664 states and 41815 transitions. [2018-10-24 16:25:22,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 16:25:22,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2018-10-24 16:25:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:23,022 INFO L225 Difference]: With dead ends: 24664 [2018-10-24 16:25:23,022 INFO L226 Difference]: Without dead ends: 21940 [2018-10-24 16:25:23,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2018-10-24 16:25:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21940 states. [2018-10-24 16:25:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21940 to 21750. [2018-10-24 16:25:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21750 states. [2018-10-24 16:25:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21750 states to 21750 states and 29105 transitions. [2018-10-24 16:25:23,485 INFO L78 Accepts]: Start accepts. Automaton has 21750 states and 29105 transitions. Word has length 192 [2018-10-24 16:25:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:23,487 INFO L481 AbstractCegarLoop]: Abstraction has 21750 states and 29105 transitions. [2018-10-24 16:25:23,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:25:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 21750 states and 29105 transitions. [2018-10-24 16:25:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-24 16:25:23,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:23,508 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:23,509 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:23,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash -193828584, now seen corresponding path program 1 times [2018-10-24 16:25:23,509 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:23,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:23,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:23,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:23,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:25:24,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:24,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:24,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:24,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:24,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:24,008 INFO L87 Difference]: Start difference. First operand 21750 states and 29105 transitions. Second operand 4 states. [2018-10-24 16:25:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:38,846 INFO L93 Difference]: Finished difference Result 67967 states and 96002 transitions. [2018-10-24 16:25:38,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:38,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2018-10-24 16:25:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:38,961 INFO L225 Difference]: With dead ends: 67967 [2018-10-24 16:25:38,961 INFO L226 Difference]: Without dead ends: 47007 [2018-10-24 16:25:38,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47007 states. [2018-10-24 16:25:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47007 to 46974. [2018-10-24 16:25:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46974 states. [2018-10-24 16:25:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46974 states to 46974 states and 61872 transitions. [2018-10-24 16:25:39,714 INFO L78 Accepts]: Start accepts. Automaton has 46974 states and 61872 transitions. Word has length 242 [2018-10-24 16:25:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:39,715 INFO L481 AbstractCegarLoop]: Abstraction has 46974 states and 61872 transitions. [2018-10-24 16:25:39,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 46974 states and 61872 transitions. [2018-10-24 16:25:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-24 16:25:39,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:39,726 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:39,726 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:39,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1980192462, now seen corresponding path program 1 times [2018-10-24 16:25:39,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:39,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:39,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:39,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:39,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:25:40,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:40,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:40,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:25:40,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:25:40,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:25:40,522 INFO L87 Difference]: Start difference. First operand 46974 states and 61872 transitions. Second operand 5 states. [2018-10-24 16:25:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:59,904 INFO L93 Difference]: Finished difference Result 126552 states and 171902 transitions. [2018-10-24 16:25:59,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:25:59,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-10-24 16:25:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:00,056 INFO L225 Difference]: With dead ends: 126552 [2018-10-24 16:26:00,057 INFO L226 Difference]: Without dead ends: 80368 [2018-10-24 16:26:00,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:26:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80368 states. [2018-10-24 16:26:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80368 to 80182. [2018-10-24 16:26:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80182 states. [2018-10-24 16:26:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80182 states to 80182 states and 105782 transitions. [2018-10-24 16:26:01,179 INFO L78 Accepts]: Start accepts. Automaton has 80182 states and 105782 transitions. Word has length 249 [2018-10-24 16:26:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:01,180 INFO L481 AbstractCegarLoop]: Abstraction has 80182 states and 105782 transitions. [2018-10-24 16:26:01,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:26:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 80182 states and 105782 transitions. [2018-10-24 16:26:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-24 16:26:01,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:01,196 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:26:01,196 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:01,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:01,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1673200853, now seen corresponding path program 1 times [2018-10-24 16:26:01,197 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:01,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:01,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:01,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:01,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:01,560 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:26:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 284 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-10-24 16:26:01,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:26:01,634 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:26:01,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:01,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:26:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-24 16:26:01,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:26:01,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:26:01,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:01,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:01,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:01,901 INFO L87 Difference]: Start difference. First operand 80182 states and 105782 transitions. Second operand 4 states. [2018-10-24 16:26:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:16,158 INFO L93 Difference]: Finished difference Result 251100 states and 333661 transitions. [2018-10-24 16:26:16,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:16,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2018-10-24 16:26:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:16,391 INFO L225 Difference]: With dead ends: 251100 [2018-10-24 16:26:16,391 INFO L226 Difference]: Without dead ends: 164606 [2018-10-24 16:26:16,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:16,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164606 states. [2018-10-24 16:26:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164606 to 134539. [2018-10-24 16:26:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134539 states. [2018-10-24 16:26:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134539 states to 134539 states and 164715 transitions. [2018-10-24 16:26:18,342 INFO L78 Accepts]: Start accepts. Automaton has 134539 states and 164715 transitions. Word has length 321 [2018-10-24 16:26:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:18,343 INFO L481 AbstractCegarLoop]: Abstraction has 134539 states and 164715 transitions. [2018-10-24 16:26:18,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 134539 states and 164715 transitions. [2018-10-24 16:26:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-24 16:26:18,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:18,360 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:26:18,360 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:18,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2141042562, now seen corresponding path program 1 times [2018-10-24 16:26:18,361 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:18,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:18,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:18,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:18,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-10-24 16:26:19,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:19,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:26:19,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:26:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:26:19,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:26:19,285 INFO L87 Difference]: Start difference. First operand 134539 states and 164715 transitions. Second operand 3 states. [2018-10-24 16:26:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:28,704 INFO L93 Difference]: Finished difference Result 348658 states and 428063 transitions. [2018-10-24 16:26:28,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:26:28,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2018-10-24 16:26:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:28,926 INFO L225 Difference]: With dead ends: 348658 [2018-10-24 16:26:28,926 INFO L226 Difference]: Without dead ends: 204640 [2018-10-24 16:26:29,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:26:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204640 states. [2018-10-24 16:26:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204640 to 198320. [2018-10-24 16:26:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198320 states. [2018-10-24 16:26:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198320 states to 198320 states and 230025 transitions. [2018-10-24 16:26:31,614 INFO L78 Accepts]: Start accepts. Automaton has 198320 states and 230025 transitions. Word has length 339 [2018-10-24 16:26:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:31,615 INFO L481 AbstractCegarLoop]: Abstraction has 198320 states and 230025 transitions. [2018-10-24 16:26:31,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:26:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 198320 states and 230025 transitions. [2018-10-24 16:26:31,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-10-24 16:26:31,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:31,631 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, 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, 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] [2018-10-24 16:26:31,631 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:31,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:31,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1595785607, now seen corresponding path program 1 times [2018-10-24 16:26:31,632 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:31,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:31,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:31,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:31,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-10-24 16:26:32,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:32,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:26:32,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:32,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:32,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:32,034 INFO L87 Difference]: Start difference. First operand 198320 states and 230025 transitions. Second operand 4 states. [2018-10-24 16:26:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:45,404 INFO L93 Difference]: Finished difference Result 483361 states and 560533 transitions. [2018-10-24 16:26:45,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:45,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 456 [2018-10-24 16:26:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:45,765 INFO L225 Difference]: With dead ends: 483361 [2018-10-24 16:26:45,766 INFO L226 Difference]: Without dead ends: 277147 [2018-10-24 16:26:45,881 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 [2018-10-24 16:26:46,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277147 states. [2018-10-24 16:26:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277147 to 270794. [2018-10-24 16:26:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270794 states. [2018-10-24 16:26:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270794 states to 270794 states and 305215 transitions. [2018-10-24 16:26:49,627 INFO L78 Accepts]: Start accepts. Automaton has 270794 states and 305215 transitions. Word has length 456 [2018-10-24 16:26:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:49,627 INFO L481 AbstractCegarLoop]: Abstraction has 270794 states and 305215 transitions. [2018-10-24 16:26:49,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:49,627 INFO L276 IsEmpty]: Start isEmpty. Operand 270794 states and 305215 transitions. [2018-10-24 16:26:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-10-24 16:26:49,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:49,662 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2018-10-24 16:26:49,662 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:49,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 463677000, now seen corresponding path program 1 times [2018-10-24 16:26:49,663 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:49,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:49,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:49,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:49,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 583 proven. 5 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-10-24 16:26:50,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:26:50,206 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:26:50,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:50,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:26:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2018-10-24 16:26:50,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:26:50,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:26:50,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:26:50,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:26:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:26:50,643 INFO L87 Difference]: Start difference. First operand 270794 states and 305215 transitions. Second operand 5 states. [2018-10-24 16:27:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:03,525 INFO L93 Difference]: Finished difference Result 539181 states and 607579 transitions. [2018-10-24 16:27:03,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:27:03,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 529 [2018-10-24 16:27:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:05,408 INFO L225 Difference]: With dead ends: 539181 [2018-10-24 16:27:05,409 INFO L226 Difference]: Without dead ends: 269177 [2018-10-24 16:27:05,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 531 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:27:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269177 states. [2018-10-24 16:27:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269177 to 254989. [2018-10-24 16:27:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254989 states. [2018-10-24 16:27:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254989 states to 254989 states and 276376 transitions. [2018-10-24 16:27:09,013 INFO L78 Accepts]: Start accepts. Automaton has 254989 states and 276376 transitions. Word has length 529 [2018-10-24 16:27:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:09,014 INFO L481 AbstractCegarLoop]: Abstraction has 254989 states and 276376 transitions. [2018-10-24 16:27:09,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:27:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 254989 states and 276376 transitions. [2018-10-24 16:27:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-10-24 16:27:09,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:09,073 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:27:09,074 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:09,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1251739296, now seen corresponding path program 1 times [2018-10-24 16:27:09,074 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:09,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:09,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:09,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:09,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 831 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-24 16:27:16,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:27:16,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:27:16,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:27:16,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:27:16,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:27:16,296 INFO L87 Difference]: Start difference. First operand 254989 states and 276376 transitions. Second operand 3 states. [2018-10-24 16:27:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:26,315 INFO L93 Difference]: Finished difference Result 539918 states and 586232 transitions. [2018-10-24 16:27:26,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:27:26,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 772 [2018-10-24 16:27:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:26,642 INFO L225 Difference]: With dead ends: 539918 [2018-10-24 16:27:26,642 INFO L226 Difference]: Without dead ends: 285719 [2018-10-24 16:27:26,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:27:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285719 states. [2018-10-24 16:27:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285719 to 284142. [2018-10-24 16:27:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284142 states. [2018-10-24 16:27:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284142 states to 284142 states and 306468 transitions. [2018-10-24 16:27:30,373 INFO L78 Accepts]: Start accepts. Automaton has 284142 states and 306468 transitions. Word has length 772 [2018-10-24 16:27:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:30,374 INFO L481 AbstractCegarLoop]: Abstraction has 284142 states and 306468 transitions. [2018-10-24 16:27:30,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:27:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 284142 states and 306468 transitions. [2018-10-24 16:27:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2018-10-24 16:27:30,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:30,463 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:27:30,464 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:30,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:30,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1878009245, now seen corresponding path program 1 times [2018-10-24 16:27:30,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:30,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:30,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:30,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:30,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-24 16:27:32,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:27:32,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:27:32,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:27:32,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:27:32,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:27:32,046 INFO L87 Difference]: Start difference. First operand 284142 states and 306468 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 16:27:36,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:27:36,559 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:27:36,564 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:27:36,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:27:36 BoogieIcfgContainer [2018-10-24 16:27:36,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:27:36,566 INFO L168 Benchmark]: Toolchain (without parser) took 227982.64 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:27:36,567 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:27:36,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2552.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:36,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 830.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 804.8 MB). Free memory was 1.1 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. [2018-10-24 16:27:36,569 INFO L168 Benchmark]: Boogie Preprocessor took 505.08 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: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:36,570 INFO L168 Benchmark]: RCFGBuilder took 12699.64 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 599.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:36,571 INFO L168 Benchmark]: TraceAbstraction took 211388.72 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -812.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:27:36,576 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2552.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 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 830.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 804.8 MB). Free memory was 1.1 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 505.08 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: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12699.64 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 599.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211388.72 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -812.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (284142states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (36514 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 211.3s OverallTime, 10 OverallIterations, 7 TraceHistogramMax, 177.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8197 SDtfs, 31576 SDslu, 2666 SDs, 0 SdLazy, 63688 SolverSat, 16638 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 143.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1095 GetRequests, 1052 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284142occurred 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: 17.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 58915 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 5129 NumberOfCodeBlocks, 5129 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5016680 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1419 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 7419/7500 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown