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/Problem15_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:37:37,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:37:37,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:37:37,302 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:37:37,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:37:37,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:37:37,305 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:37:37,306 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:37:37,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:37:37,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:37:37,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:37:37,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:37:37,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:37:37,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:37:37,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:37:37,315 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:37:37,316 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:37:37,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:37:37,320 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:37:37,323 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:37:37,324 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:37:37,325 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:37:37,330 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:37:37,330 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:37:37,330 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:37:37,331 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:37:37,332 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:37:37,334 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:37:37,335 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:37:37,337 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:37:37,337 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:37:37,338 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:37:37,338 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:37:37,339 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:37:37,340 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:37:37,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:37:37,340 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 16:37:37,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:37:37,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:37:37,356 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:37:37,356 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:37:37,357 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:37:37,357 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:37:37,357 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:37:37,357 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:37:37,357 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:37:37,358 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:37:37,358 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:37:37,358 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:37:37,358 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:37:37,358 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:37:37,359 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:37:37,359 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:37:37,359 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:37:37,359 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:37:37,359 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:37:37,360 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:37:37,360 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:37:37,360 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:37:37,360 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:37:37,360 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:37:37,361 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:37:37,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:37:37,361 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:37:37,361 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:37:37,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:37:37,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:37:37,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:37:37,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:37:37,437 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:37:37,438 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-10-24 16:37:37,509 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9baa83e88/94de497cbf05432094f96213a05c3694/FLAG736670c0d [2018-10-24 16:37:38,140 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:37:38,143 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-10-24 16:37:38,164 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9baa83e88/94de497cbf05432094f96213a05c3694/FLAG736670c0d [2018-10-24 16:37:38,182 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9baa83e88/94de497cbf05432094f96213a05c3694 [2018-10-24 16:37:38,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:37:38,195 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:37:38,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:37:38,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:37:38,201 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:37:38,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:37:38" (1/1) ... [2018-10-24 16:37:38,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b15776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:38, skipping insertion in model container [2018-10-24 16:37:38,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:37:38" (1/1) ... [2018-10-24 16:37:38,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:37:38,323 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:37:39,102 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:37:39,107 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:37:39,427 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:37:39,451 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:37:39,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39 WrapperNode [2018-10-24 16:37:39,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:37:39,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:37:39,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:37:39,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:37:39,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:39,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:39,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:37:39,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:37:39,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:37:39,850 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:37:39,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:39,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:39,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:39,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:39,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:39,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:40,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (1/1) ... [2018-10-24 16:37:40,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:37:40,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:37:40,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:37:40,061 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:37:40,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (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 16:37:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:37:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:37:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:37:49,497 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:37:49,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:37:49 BoogieIcfgContainer [2018-10-24 16:37:49,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:37:49,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:37:49,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:37:49,503 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:37:49,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:37:38" (1/3) ... [2018-10-24 16:37:49,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e69edff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:37:49, skipping insertion in model container [2018-10-24 16:37:49,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:37:39" (2/3) ... [2018-10-24 16:37:49,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e69edff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:37:49, skipping insertion in model container [2018-10-24 16:37:49,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:37:49" (3/3) ... [2018-10-24 16:37:49,507 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label49_true-unreach-call.c [2018-10-24 16:37:49,522 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:37:49,542 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:37:49,562 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:37:49,620 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:37:49,621 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:37:49,621 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:37:49,621 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:37:49,621 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:37:49,622 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:37:49,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:37:49,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:37:49,622 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:37:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 16:37:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 16:37:49,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:37:49,681 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] [2018-10-24 16:37:49,684 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:37:49,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:37:49,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-24 16:37:49,693 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:37:49,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:37:49,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:49,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:37:49,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:37:50,246 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 16:37:50,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:37:50,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:37:50,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:37:50,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:37:50,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:50,273 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 16:37:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:37:56,770 INFO L93 Difference]: Finished difference Result 1472 states and 2722 transitions. [2018-10-24 16:37:56,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:37:56,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-24 16:37:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:37:56,802 INFO L225 Difference]: With dead ends: 1472 [2018-10-24 16:37:56,803 INFO L226 Difference]: Without dead ends: 1040 [2018-10-24 16:37:56,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2018-10-24 16:37:56,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1036. [2018-10-24 16:37:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-10-24 16:37:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1672 transitions. [2018-10-24 16:37:56,959 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1672 transitions. Word has length 53 [2018-10-24 16:37:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:37:56,960 INFO L481 AbstractCegarLoop]: Abstraction has 1036 states and 1672 transitions. [2018-10-24 16:37:56,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:37:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1672 transitions. [2018-10-24 16:37:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 16:37:56,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:37:56,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:56,973 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:37:56,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:37:56,974 INFO L82 PathProgramCache]: Analyzing trace with hash -151186266, now seen corresponding path program 1 times [2018-10-24 16:37:56,974 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:37:56,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:37:56,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:56,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:37:56,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:37:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:37:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:37:57,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:37:57,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:37:57,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:37:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:37:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:37:57,385 INFO L87 Difference]: Start difference. First operand 1036 states and 1672 transitions. Second operand 4 states. [2018-10-24 16:38:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:03,032 INFO L93 Difference]: Finished difference Result 3938 states and 6430 transitions. [2018-10-24 16:38:03,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:38:03,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-10-24 16:38:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:03,051 INFO L225 Difference]: With dead ends: 3938 [2018-10-24 16:38:03,051 INFO L226 Difference]: Without dead ends: 2904 [2018-10-24 16:38:03,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:38:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2018-10-24 16:38:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1938. [2018-10-24 16:38:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2018-10-24 16:38:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2805 transitions. [2018-10-24 16:38:03,113 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2805 transitions. Word has length 173 [2018-10-24 16:38:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:03,113 INFO L481 AbstractCegarLoop]: Abstraction has 1938 states and 2805 transitions. [2018-10-24 16:38:03,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:38:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2805 transitions. [2018-10-24 16:38:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-24 16:38:03,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:03,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:03,119 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:03,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:03,119 INFO L82 PathProgramCache]: Analyzing trace with hash -561273614, now seen corresponding path program 1 times [2018-10-24 16:38:03,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:03,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:03,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:03,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:03,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 16:38:03,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:38:03,944 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 16:38:03,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:04,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:38:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:38:04,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:38:04,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:38:04,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:38:04,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:38:04,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:38:04,228 INFO L87 Difference]: Start difference. First operand 1938 states and 2805 transitions. Second operand 4 states. [2018-10-24 16:38:12,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:12,652 INFO L93 Difference]: Finished difference Result 5979 states and 8473 transitions. [2018-10-24 16:38:12,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:38:12,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2018-10-24 16:38:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:12,685 INFO L225 Difference]: With dead ends: 5979 [2018-10-24 16:38:12,686 INFO L226 Difference]: Without dead ends: 4043 [2018-10-24 16:38:12,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 250 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 16:38:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4043 states. [2018-10-24 16:38:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4043 to 2838. [2018-10-24 16:38:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2838 states. [2018-10-24 16:38:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3816 transitions. [2018-10-24 16:38:12,756 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3816 transitions. Word has length 250 [2018-10-24 16:38:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:12,757 INFO L481 AbstractCegarLoop]: Abstraction has 2838 states and 3816 transitions. [2018-10-24 16:38:12,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:38:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3816 transitions. [2018-10-24 16:38:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-24 16:38:12,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:12,763 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:38:12,763 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:12,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:12,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1922676989, now seen corresponding path program 1 times [2018-10-24 16:38:12,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:12,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:12,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:12,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:12,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:13,418 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 16:38:13,758 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 16:38:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-24 16:38:14,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:14,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:38:14,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:38:14,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:38:14,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:38:14,157 INFO L87 Difference]: Start difference. First operand 2838 states and 3816 transitions. Second operand 5 states. [2018-10-24 16:38:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:19,766 INFO L93 Difference]: Finished difference Result 6876 states and 8952 transitions. [2018-10-24 16:38:19,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:38:19,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2018-10-24 16:38:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:19,788 INFO L225 Difference]: With dead ends: 6876 [2018-10-24 16:38:19,789 INFO L226 Difference]: Without dead ends: 4040 [2018-10-24 16:38:19,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:38:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2018-10-24 16:38:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3739. [2018-10-24 16:38:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3739 states. [2018-10-24 16:38:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 4777 transitions. [2018-10-24 16:38:19,859 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 4777 transitions. Word has length 333 [2018-10-24 16:38:19,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:19,860 INFO L481 AbstractCegarLoop]: Abstraction has 3739 states and 4777 transitions. [2018-10-24 16:38:19,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:38:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 4777 transitions. [2018-10-24 16:38:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-10-24 16:38:19,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:19,870 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:38:19,870 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:19,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:19,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1862902283, now seen corresponding path program 1 times [2018-10-24 16:38:19,871 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:19,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:19,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:19,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:19,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:38:20,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:20,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:38:20,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:38:20,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:38:20,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:38:20,378 INFO L87 Difference]: Start difference. First operand 3739 states and 4777 transitions. Second operand 4 states. [2018-10-24 16:38:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:25,323 INFO L93 Difference]: Finished difference Result 9287 states and 12129 transitions. [2018-10-24 16:38:25,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:38:25,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 407 [2018-10-24 16:38:25,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:25,347 INFO L225 Difference]: With dead ends: 9287 [2018-10-24 16:38:25,347 INFO L226 Difference]: Without dead ends: 5550 [2018-10-24 16:38:25,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 16:38:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2018-10-24 16:38:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5547. [2018-10-24 16:38:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5547 states. [2018-10-24 16:38:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 6932 transitions. [2018-10-24 16:38:25,442 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 6932 transitions. Word has length 407 [2018-10-24 16:38:25,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:25,443 INFO L481 AbstractCegarLoop]: Abstraction has 5547 states and 6932 transitions. [2018-10-24 16:38:25,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:38:25,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 6932 transitions. [2018-10-24 16:38:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-10-24 16:38:25,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:25,454 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:38:25,455 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:25,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:25,455 INFO L82 PathProgramCache]: Analyzing trace with hash -100023934, now seen corresponding path program 1 times [2018-10-24 16:38:25,455 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:25,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:25,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:25,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:25,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 16:38:26,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:38:26,276 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 16:38:26,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:26,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:38:26,839 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 17 [2018-10-24 16:38:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 157 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:38:27,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:38:27,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-24 16:38:27,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:38:27,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:38:27,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:38:27,265 INFO L87 Difference]: Start difference. First operand 5547 states and 6932 transitions. Second operand 7 states. [2018-10-24 16:38:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:46,965 INFO L93 Difference]: Finished difference Result 23253 states and 30187 transitions. [2018-10-24 16:38:46,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 16:38:46,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 432 [2018-10-24 16:38:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:47,028 INFO L225 Difference]: With dead ends: 23253 [2018-10-24 16:38:47,028 INFO L226 Difference]: Without dead ends: 17708 [2018-10-24 16:38:47,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-10-24 16:38:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17708 states. [2018-10-24 16:38:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17708 to 14925. [2018-10-24 16:38:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14925 states. [2018-10-24 16:38:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14925 states to 14925 states and 17815 transitions. [2018-10-24 16:38:47,361 INFO L78 Accepts]: Start accepts. Automaton has 14925 states and 17815 transitions. Word has length 432 [2018-10-24 16:38:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:47,362 INFO L481 AbstractCegarLoop]: Abstraction has 14925 states and 17815 transitions. [2018-10-24 16:38:47,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:38:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 14925 states and 17815 transitions. [2018-10-24 16:38:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-10-24 16:38:47,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:47,376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:47,377 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:47,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1718705433, now seen corresponding path program 1 times [2018-10-24 16:38:47,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:47,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:47,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:47,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:47,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 16:38:47,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:38:47,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:38:47,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:38:47,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:38:47,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:38:47,806 INFO L87 Difference]: Start difference. First operand 14925 states and 17815 transitions. Second operand 4 states. [2018-10-24 16:38:54,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:38:54,287 INFO L93 Difference]: Finished difference Result 28927 states and 34608 transitions. [2018-10-24 16:38:54,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:38:54,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 435 [2018-10-24 16:38:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:38:54,315 INFO L225 Difference]: With dead ends: 28927 [2018-10-24 16:38:54,315 INFO L226 Difference]: Without dead ends: 14304 [2018-10-24 16:38:54,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:38:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14304 states. [2018-10-24 16:38:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14304 to 14300. [2018-10-24 16:38:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14300 states. [2018-10-24 16:38:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14300 states to 14300 states and 16336 transitions. [2018-10-24 16:38:54,539 INFO L78 Accepts]: Start accepts. Automaton has 14300 states and 16336 transitions. Word has length 435 [2018-10-24 16:38:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:38:54,540 INFO L481 AbstractCegarLoop]: Abstraction has 14300 states and 16336 transitions. [2018-10-24 16:38:54,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:38:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14300 states and 16336 transitions. [2018-10-24 16:38:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-10-24 16:38:54,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:38:54,560 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:54,560 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:38:54,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:38:54,561 INFO L82 PathProgramCache]: Analyzing trace with hash -92711754, now seen corresponding path program 1 times [2018-10-24 16:38:54,561 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:38:54,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:38:54,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:54,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:54,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:38:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:55,392 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 5 [2018-10-24 16:38:55,828 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-10-24 16:38:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 361 proven. 51 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 16:38:56,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:38:56,237 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 16:38:56,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:38:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:38:56,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:38:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 361 proven. 51 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 16:38:57,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:38:57,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 9 [2018-10-24 16:38:57,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:38:57,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:38:57,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:38:57,005 INFO L87 Difference]: Start difference. First operand 14300 states and 16336 transitions. Second operand 9 states. [2018-10-24 16:39:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:12,961 INFO L93 Difference]: Finished difference Result 41943 states and 48730 transitions. [2018-10-24 16:39:12,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:39:12,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 585 [2018-10-24 16:39:12,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:13,004 INFO L225 Difference]: With dead ends: 41943 [2018-10-24 16:39:13,004 INFO L226 Difference]: Without dead ends: 27945 [2018-10-24 16:39:13,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2018-10-24 16:39:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27945 states. [2018-10-24 16:39:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27945 to 25170. [2018-10-24 16:39:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25170 states. [2018-10-24 16:39:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25170 states to 25170 states and 28670 transitions. [2018-10-24 16:39:13,383 INFO L78 Accepts]: Start accepts. Automaton has 25170 states and 28670 transitions. Word has length 585 [2018-10-24 16:39:13,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:13,384 INFO L481 AbstractCegarLoop]: Abstraction has 25170 states and 28670 transitions. [2018-10-24 16:39:13,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:39:13,384 INFO L276 IsEmpty]: Start isEmpty. Operand 25170 states and 28670 transitions. [2018-10-24 16:39:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-10-24 16:39:13,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:13,414 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:13,415 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:13,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:13,415 INFO L82 PathProgramCache]: Analyzing trace with hash 642633520, now seen corresponding path program 1 times [2018-10-24 16:39:13,415 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:13,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:13,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:13,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:13,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 737 proven. 4 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2018-10-24 16:39:14,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:39:14,853 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:39:14,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:15,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:39:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 702 proven. 39 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2018-10-24 16:39:15,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:39:15,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 16:39:15,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:39:15,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:39:15,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:39:15,645 INFO L87 Difference]: Start difference. First operand 25170 states and 28670 transitions. Second operand 9 states. [2018-10-24 16:39:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:28,879 INFO L93 Difference]: Finished difference Result 58832 states and 66484 transitions. [2018-10-24 16:39:28,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:39:28,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 628 [2018-10-24 16:39:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:28,914 INFO L225 Difference]: With dead ends: 58832 [2018-10-24 16:39:28,914 INFO L226 Difference]: Without dead ends: 16956 [2018-10-24 16:39:28,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 625 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:39:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2018-10-24 16:39:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 10652. [2018-10-24 16:39:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10652 states. [2018-10-24 16:39:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 11397 transitions. [2018-10-24 16:39:29,102 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 11397 transitions. Word has length 628 [2018-10-24 16:39:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:29,103 INFO L481 AbstractCegarLoop]: Abstraction has 10652 states and 11397 transitions. [2018-10-24 16:39:29,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:39:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 11397 transitions. [2018-10-24 16:39:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-10-24 16:39:29,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:29,121 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:39:29,122 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:29,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:29,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1896400666, now seen corresponding path program 1 times [2018-10-24 16:39:29,122 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:29,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:29,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:29,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:29,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-10-24 16:39:30,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:39:30,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:39:30,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:39:30,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:39:30,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:39:30,153 INFO L87 Difference]: Start difference. First operand 10652 states and 11397 transitions. Second operand 5 states. [2018-10-24 16:39:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:39:32,703 INFO L93 Difference]: Finished difference Result 23066 states and 24616 transitions. [2018-10-24 16:39:32,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:39:32,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 647 [2018-10-24 16:39:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:39:32,718 INFO L225 Difference]: With dead ends: 23066 [2018-10-24 16:39:32,718 INFO L226 Difference]: Without dead ends: 12416 [2018-10-24 16:39:32,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:39:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12416 states. [2018-10-24 16:39:32,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12416 to 9106. [2018-10-24 16:39:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9106 states. [2018-10-24 16:39:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 9471 transitions. [2018-10-24 16:39:32,846 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 9471 transitions. Word has length 647 [2018-10-24 16:39:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:39:32,847 INFO L481 AbstractCegarLoop]: Abstraction has 9106 states and 9471 transitions. [2018-10-24 16:39:32,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:39:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 9471 transitions. [2018-10-24 16:39:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2018-10-24 16:39:32,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:39:32,860 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, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:39:32,861 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:39:32,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:39:32,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1834118323, now seen corresponding path program 1 times [2018-10-24 16:39:32,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:39:32,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:39:32,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:32,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:32,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:39:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:33,397 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 16:39:33,707 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 16:39:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 434 proven. 51 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-24 16:39:34,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:39:34,074 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:39:34,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:39:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:39:34,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:39:34,633 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-10-24 16:39:34,974 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 20 [2018-10-24 16:39:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 459 proven. 179 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-24 16:39:35,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:39:35,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-24 16:39:35,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:39:35,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:39:35,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:39:35,692 INFO L87 Difference]: Start difference. First operand 9106 states and 9471 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 16:41:54,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:41:54,210 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:41:54,216 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:41:54,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:41:54 BoogieIcfgContainer [2018-10-24 16:41:54,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:41:54,218 INFO L168 Benchmark]: Toolchain (without parser) took 256023.15 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 810.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:54,219 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:41:54,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1255.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:54,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 396.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:54,223 INFO L168 Benchmark]: Boogie Preprocessor took 210.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:54,224 INFO L168 Benchmark]: RCFGBuilder took 9436.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 299.2 MB). Peak memory consumption was 299.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:54,225 INFO L168 Benchmark]: TraceAbstraction took 244717.79 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 482.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:41:54,237 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1255.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 396.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9436.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 299.2 MB). Peak memory consumption was 299.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244717.79 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 482.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (9106states) and FLOYD_HOARE automaton (currently 5 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (461 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 244.6s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 228.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2819 SDtfs, 17924 SDslu, 2454 SDs, 0 SdLazy, 37255 SolverSat, 7959 SolverUnsat, 68 SolverUnknown, 0 SolverNotchecked, 213.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2686 GetRequests, 2609 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25170occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 17655 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 7226 NumberOfCodeBlocks, 7226 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7210 ConstructedInterpolants, 205 QuantifiedInterpolants, 15617816 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3112 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 6634/7168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown