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_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:19:34,329 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:19:34,331 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:19:34,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:19:34,348 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:19:34,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:19:34,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:19:34,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:19:34,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:19:34,358 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:19:34,360 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:19:34,360 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:19:34,361 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:19:34,364 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:19:34,372 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:19:34,373 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:19:34,374 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:19:34,375 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:19:34,379 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:19:34,384 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:19:34,385 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:19:34,388 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:19:34,391 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:19:34,391 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:19:34,391 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:19:34,392 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:19:34,393 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:19:34,394 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:19:34,397 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:19:34,399 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:19:34,399 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:19:34,400 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:19:34,403 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 16:19:34,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:19:34,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:19:34,421 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:19:34,421 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:19:34,422 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:19:34,422 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:19:34,422 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:19:34,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:19:34,425 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:19:34,425 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:19:34,425 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:19:34,425 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:19:34,425 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:19:34,426 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:19:34,426 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:19:34,426 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:19:34,426 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:19:34,426 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:19:34,427 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:19:34,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:34,427 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:19:34,427 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:19:34,427 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:19:34,428 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:19:34,428 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:19:34,428 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:19:34,428 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:19:34,428 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:19:34,487 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:19:34,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:19:34,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:19:34,509 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:19:34,510 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:19:34,510 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-24 16:19:34,593 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a329fe45c/772144a8135d4646b3505fa9979a3a73/FLAGdd9efa064 [2018-10-24 16:19:35,374 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:19:35,375 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-24 16:19:35,411 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a329fe45c/772144a8135d4646b3505fa9979a3a73/FLAGdd9efa064 [2018-10-24 16:19:35,434 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a329fe45c/772144a8135d4646b3505fa9979a3a73 [2018-10-24 16:19:35,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:19:35,449 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:19:35,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:35,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:19:35,456 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:19:35,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:35" (1/1) ... [2018-10-24 16:19:35,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c383fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:35, skipping insertion in model container [2018-10-24 16:19:35,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:35" (1/1) ... [2018-10-24 16:19:35,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:19:35,679 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:19:37,024 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:37,031 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:19:37,831 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:37,869 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:19:37,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37 WrapperNode [2018-10-24 16:19:37,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:37,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:37,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:19:37,872 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:19:37,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:37,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:38,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:38,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:19:38,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:19:38,711 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:19:38,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:38,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:38,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:38,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:39,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:39,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:39,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (1/1) ... [2018-10-24 16:19:39,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:19:39,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:19:39,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:19:39,275 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:19:39,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (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 16:19:39,352 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:19:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:19:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:19:54,101 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:19:54,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:54 BoogieIcfgContainer [2018-10-24 16:19:54,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:19:54,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:19:54,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:19:54,107 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:19:54,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:19:35" (1/3) ... [2018-10-24 16:19:54,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a45b874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:54, skipping insertion in model container [2018-10-24 16:19:54,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:37" (2/3) ... [2018-10-24 16:19:54,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a45b874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:54, skipping insertion in model container [2018-10-24 16:19:54,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:54" (3/3) ... [2018-10-24 16:19:54,111 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-10-24 16:19:54,121 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:19:54,130 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:19:54,147 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:19:54,196 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:19:54,196 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:19:54,196 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:19:54,196 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:19:54,197 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:19:54,197 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:19:54,197 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:19:54,197 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:19:54,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:19:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:19:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-24 16:19:54,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:54,253 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] [2018-10-24 16:19:54,256 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:54,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:54,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1059493314, now seen corresponding path program 1 times [2018-10-24 16:19:54,264 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:54,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:54,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:54,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:54,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:54,772 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 16:19:54,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:54,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:19:54,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:54,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:54,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:54,800 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:20:10,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:10,010 INFO L93 Difference]: Finished difference Result 3991 states and 7504 transitions. [2018-10-24 16:20:10,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:10,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-24 16:20:10,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:10,058 INFO L225 Difference]: With dead ends: 3991 [2018-10-24 16:20:10,058 INFO L226 Difference]: Without dead ends: 2885 [2018-10-24 16:20:10,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:10,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2018-10-24 16:20:10,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1946. [2018-10-24 16:20:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2018-10-24 16:20:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 3412 transitions. [2018-10-24 16:20:10,235 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 3412 transitions. Word has length 61 [2018-10-24 16:20:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:10,237 INFO L481 AbstractCegarLoop]: Abstraction has 1946 states and 3412 transitions. [2018-10-24 16:20:10,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 3412 transitions. [2018-10-24 16:20:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 16:20:10,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:10,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:10,247 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:10,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:10,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1442154721, now seen corresponding path program 1 times [2018-10-24 16:20:10,248 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:10,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:10,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:10,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:10,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:10,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:10,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:10,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:10,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:10,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:10,591 INFO L87 Difference]: Start difference. First operand 1946 states and 3412 transitions. Second operand 4 states. [2018-10-24 16:20:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:28,730 INFO L93 Difference]: Finished difference Result 7107 states and 12745 transitions. [2018-10-24 16:20:28,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:28,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2018-10-24 16:20:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:28,759 INFO L225 Difference]: With dead ends: 7107 [2018-10-24 16:20:28,759 INFO L226 Difference]: Without dead ends: 5163 [2018-10-24 16:20:28,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2018-10-24 16:20:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 5141. [2018-10-24 16:20:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5141 states. [2018-10-24 16:20:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 8063 transitions. [2018-10-24 16:20:28,865 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 8063 transitions. Word has length 128 [2018-10-24 16:20:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:28,866 INFO L481 AbstractCegarLoop]: Abstraction has 5141 states and 8063 transitions. [2018-10-24 16:20:28,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 8063 transitions. [2018-10-24 16:20:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 16:20:28,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:28,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:28,871 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:28,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:28,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1645796799, now seen corresponding path program 1 times [2018-10-24 16:20:28,872 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:28,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:28,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:28,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:28,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:29,360 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:20:29,826 WARN L179 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:20:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-24 16:20:30,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:30,451 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 16:20:30,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:30,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:30,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:30,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:20:30,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:20:30,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:20:30,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:20:30,750 INFO L87 Difference]: Start difference. First operand 5141 states and 8063 transitions. Second operand 6 states. [2018-10-24 16:20:30,959 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:20:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:50,754 INFO L93 Difference]: Finished difference Result 26053 states and 40615 transitions. [2018-10-24 16:20:50,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:20:50,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-24 16:20:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:50,854 INFO L225 Difference]: With dead ends: 26053 [2018-10-24 16:20:50,854 INFO L226 Difference]: Without dead ends: 20914 [2018-10-24 16:20:50,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:20:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20914 states. [2018-10-24 16:20:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20914 to 20913. [2018-10-24 16:20:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20913 states. [2018-10-24 16:20:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20913 states to 20913 states and 28528 transitions. [2018-10-24 16:20:51,251 INFO L78 Accepts]: Start accepts. Automaton has 20913 states and 28528 transitions. Word has length 158 [2018-10-24 16:20:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:51,252 INFO L481 AbstractCegarLoop]: Abstraction has 20913 states and 28528 transitions. [2018-10-24 16:20:51,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:20:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 20913 states and 28528 transitions. [2018-10-24 16:20:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-24 16:20:51,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:51,260 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:51,260 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:51,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash -571397369, now seen corresponding path program 1 times [2018-10-24 16:20:51,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:51,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:51,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:51,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:51,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 117 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 16:20:51,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:51,658 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 16:20:51,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:51,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:52,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:52,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:20:52,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:52,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:52,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:52,019 INFO L87 Difference]: Start difference. First operand 20913 states and 28528 transitions. Second operand 4 states. [2018-10-24 16:21:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:04,111 INFO L93 Difference]: Finished difference Result 71020 states and 97374 transitions. [2018-10-24 16:21:04,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:04,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-10-24 16:21:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:04,217 INFO L225 Difference]: With dead ends: 71020 [2018-10-24 16:21:04,217 INFO L226 Difference]: Without dead ends: 50897 [2018-10-24 16:21:04,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 267 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 16:21:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50897 states. [2018-10-24 16:21:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50897 to 39823. [2018-10-24 16:21:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39823 states. [2018-10-24 16:21:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39823 states to 39823 states and 50523 transitions. [2018-10-24 16:21:05,239 INFO L78 Accepts]: Start accepts. Automaton has 39823 states and 50523 transitions. Word has length 267 [2018-10-24 16:21:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:05,239 INFO L481 AbstractCegarLoop]: Abstraction has 39823 states and 50523 transitions. [2018-10-24 16:21:05,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 39823 states and 50523 transitions. [2018-10-24 16:21:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-24 16:21:05,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:05,250 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:05,251 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:05,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:05,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2043076177, now seen corresponding path program 1 times [2018-10-24 16:21:05,251 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:05,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:05,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:05,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 16:21:05,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:05,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:21:05,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:21:05,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:21:05,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:05,593 INFO L87 Difference]: Start difference. First operand 39823 states and 50523 transitions. Second operand 3 states. [2018-10-24 16:21:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:12,088 INFO L93 Difference]: Finished difference Result 114312 states and 145741 transitions. [2018-10-24 16:21:12,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:21:12,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2018-10-24 16:21:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:12,228 INFO L225 Difference]: With dead ends: 114312 [2018-10-24 16:21:12,229 INFO L226 Difference]: Without dead ends: 75279 [2018-10-24 16:21:12,280 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 16:21:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75279 states. [2018-10-24 16:21:13,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75279 to 74490. [2018-10-24 16:21:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74490 states. [2018-10-24 16:21:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74490 states to 74490 states and 89291 transitions. [2018-10-24 16:21:13,822 INFO L78 Accepts]: Start accepts. Automaton has 74490 states and 89291 transitions. Word has length 293 [2018-10-24 16:21:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:13,822 INFO L481 AbstractCegarLoop]: Abstraction has 74490 states and 89291 transitions. [2018-10-24 16:21:13,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:21:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 74490 states and 89291 transitions. [2018-10-24 16:21:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-24 16:21:13,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:13,844 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:13,844 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:13,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:13,845 INFO L82 PathProgramCache]: Analyzing trace with hash -40954621, now seen corresponding path program 1 times [2018-10-24 16:21:13,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:13,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:13,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:13,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:13,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-24 16:21:14,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:14,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:14,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:14,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:14,204 INFO L87 Difference]: Start difference. First operand 74490 states and 89291 transitions. Second operand 4 states. [2018-10-24 16:21:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:27,369 INFO L93 Difference]: Finished difference Result 193140 states and 232971 transitions. [2018-10-24 16:21:27,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:27,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-10-24 16:21:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:27,504 INFO L225 Difference]: With dead ends: 193140 [2018-10-24 16:21:27,504 INFO L226 Difference]: Without dead ends: 119440 [2018-10-24 16:21:27,543 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 16:21:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119440 states. [2018-10-24 16:21:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119440 to 119405. [2018-10-24 16:21:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119405 states. [2018-10-24 16:21:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119405 states to 119405 states and 138598 transitions. [2018-10-24 16:21:28,767 INFO L78 Accepts]: Start accepts. Automaton has 119405 states and 138598 transitions. Word has length 396 [2018-10-24 16:21:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:28,768 INFO L481 AbstractCegarLoop]: Abstraction has 119405 states and 138598 transitions. [2018-10-24 16:21:28,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 119405 states and 138598 transitions. [2018-10-24 16:21:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-24 16:21:28,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:28,799 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:28,800 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:28,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:28,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2066761458, now seen corresponding path program 1 times [2018-10-24 16:21:28,800 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:28,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:28,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:28,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:28,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 608 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-24 16:21:29,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:29,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:29,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:29,296 INFO L87 Difference]: Start difference. First operand 119405 states and 138598 transitions. Second operand 5 states. [2018-10-24 16:21:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:53,312 INFO L93 Difference]: Finished difference Result 391988 states and 454896 transitions. [2018-10-24 16:21:53,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:21:53,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2018-10-24 16:21:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:53,677 INFO L225 Difference]: With dead ends: 391988 [2018-10-24 16:21:53,677 INFO L226 Difference]: Without dead ends: 273373 [2018-10-24 16:21:53,798 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 16:21:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273373 states. [2018-10-24 16:21:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273373 to 260561. [2018-10-24 16:21:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260561 states. [2018-10-24 16:21:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260561 states to 260561 states and 295629 transitions. [2018-10-24 16:21:57,544 INFO L78 Accepts]: Start accepts. Automaton has 260561 states and 295629 transitions. Word has length 477 [2018-10-24 16:21:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:57,545 INFO L481 AbstractCegarLoop]: Abstraction has 260561 states and 295629 transitions. [2018-10-24 16:21:57,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:21:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 260561 states and 295629 transitions. [2018-10-24 16:21:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-10-24 16:21:57,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:57,605 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:57,605 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:57,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1207682100, now seen corresponding path program 1 times [2018-10-24 16:21:57,606 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:57,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:57,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:57,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:57,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:21:58,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:58,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:58,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:58,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:58,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:58,373 INFO L87 Difference]: Start difference. First operand 260561 states and 295629 transitions. Second operand 4 states. [2018-10-24 16:22:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:14,300 INFO L93 Difference]: Finished difference Result 520352 states and 590500 transitions. [2018-10-24 16:22:14,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:14,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 566 [2018-10-24 16:22:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:14,664 INFO L225 Difference]: With dead ends: 520352 [2018-10-24 16:22:14,664 INFO L226 Difference]: Without dead ends: 260581 [2018-10-24 16:22:14,796 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 16:22:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260581 states. [2018-10-24 16:22:18,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260581 to 255043. [2018-10-24 16:22:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255043 states. [2018-10-24 16:22:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255043 states to 255043 states and 280707 transitions. [2018-10-24 16:22:18,564 INFO L78 Accepts]: Start accepts. Automaton has 255043 states and 280707 transitions. Word has length 566 [2018-10-24 16:22:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:18,565 INFO L481 AbstractCegarLoop]: Abstraction has 255043 states and 280707 transitions. [2018-10-24 16:22:18,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 255043 states and 280707 transitions. [2018-10-24 16:22:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-10-24 16:22:18,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:18,602 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-24 16:22:18,602 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:18,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1997089938, now seen corresponding path program 1 times [2018-10-24 16:22:18,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:18,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:18,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:18,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:18,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:19,072 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:22:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-10-24 16:22:25,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:25,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:25,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:25,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:25,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:25,638 INFO L87 Difference]: Start difference. First operand 255043 states and 280707 transitions. Second operand 4 states. [2018-10-24 16:22:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:35,810 INFO L93 Difference]: Finished difference Result 522690 states and 574832 transitions. [2018-10-24 16:22:35,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:35,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 629 [2018-10-24 16:22:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:36,101 INFO L225 Difference]: With dead ends: 522690 [2018-10-24 16:22:36,101 INFO L226 Difference]: Without dead ends: 229750 [2018-10-24 16:22:36,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229750 states. [2018-10-24 16:22:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229750 to 213989. [2018-10-24 16:22:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213989 states. [2018-10-24 16:22:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213989 states to 213989 states and 233017 transitions. [2018-10-24 16:22:38,905 INFO L78 Accepts]: Start accepts. Automaton has 213989 states and 233017 transitions. Word has length 629 [2018-10-24 16:22:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:38,905 INFO L481 AbstractCegarLoop]: Abstraction has 213989 states and 233017 transitions. [2018-10-24 16:22:38,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 213989 states and 233017 transitions. [2018-10-24 16:22:38,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2018-10-24 16:22:38,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:38,935 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:22:38,936 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:38,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:38,936 INFO L82 PathProgramCache]: Analyzing trace with hash 40773872, now seen corresponding path program 1 times [2018-10-24 16:22:38,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:38,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:38,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:38,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:38,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 776 proven. 8 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-10-24 16:22:40,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:40,460 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 16:22:40,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:40,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 961 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-24 16:22:41,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:41,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:22:41,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:41,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:41,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:41,347 INFO L87 Difference]: Start difference. First operand 213989 states and 233017 transitions. Second operand 4 states. [2018-10-24 16:22:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:51,876 INFO L93 Difference]: Finished difference Result 454784 states and 493792 transitions. [2018-10-24 16:22:51,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:51,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 690 [2018-10-24 16:22:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:52,162 INFO L225 Difference]: With dead ends: 454784 [2018-10-24 16:22:52,163 INFO L226 Difference]: Without dead ends: 241585 [2018-10-24 16:22:52,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 690 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 16:22:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241585 states. [2018-10-24 16:22:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241585 to 221867. [2018-10-24 16:22:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221867 states. [2018-10-24 16:22:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221867 states to 221867 states and 241032 transitions. [2018-10-24 16:22:55,967 INFO L78 Accepts]: Start accepts. Automaton has 221867 states and 241032 transitions. Word has length 690 [2018-10-24 16:22:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:55,968 INFO L481 AbstractCegarLoop]: Abstraction has 221867 states and 241032 transitions. [2018-10-24 16:22:55,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 221867 states and 241032 transitions. [2018-10-24 16:22:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-10-24 16:22:56,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:56,010 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:56,010 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:56,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:56,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1193181533, now seen corresponding path program 1 times [2018-10-24 16:22:56,011 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:56,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:56,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:56,658 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:22:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 1276 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2018-10-24 16:22:57,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:57,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:57,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:57,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:57,038 INFO L87 Difference]: Start difference. First operand 221867 states and 241032 transitions. Second operand 4 states. [2018-10-24 16:23:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:07,135 INFO L93 Difference]: Finished difference Result 442177 states and 480414 transitions. [2018-10-24 16:23:07,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:07,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 742 [2018-10-24 16:23:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:08,033 INFO L225 Difference]: With dead ends: 442177 [2018-10-24 16:23:08,034 INFO L226 Difference]: Without dead ends: 221100 [2018-10-24 16:23:08,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221100 states. [2018-10-24 16:23:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221100 to 218712. [2018-10-24 16:23:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218712 states. [2018-10-24 16:23:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218712 states to 218712 states and 233777 transitions. [2018-10-24 16:23:11,156 INFO L78 Accepts]: Start accepts. Automaton has 218712 states and 233777 transitions. Word has length 742 [2018-10-24 16:23:11,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:11,157 INFO L481 AbstractCegarLoop]: Abstraction has 218712 states and 233777 transitions. [2018-10-24 16:23:11,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 218712 states and 233777 transitions. [2018-10-24 16:23:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-10-24 16:23:11,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:11,192 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:23:11,193 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:11,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1393003149, now seen corresponding path program 1 times [2018-10-24 16:23:11,193 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:11,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:11,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:11,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:11,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 1280 proven. 16 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2018-10-24 16:23:12,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:23:12,091 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 16:23:12,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:12,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:23:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 1396 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2018-10-24 16:23:16,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:23:16,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:23:16,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:23:16,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:23:16,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:16,361 INFO L87 Difference]: Start difference. First operand 218712 states and 233777 transitions. Second operand 5 states. Received shutdown request... [2018-10-24 16:23:16,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:16,783 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:23:16,791 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:23:16,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:23:16 BoogieIcfgContainer [2018-10-24 16:23:16,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:23:16,792 INFO L168 Benchmark]: Toolchain (without parser) took 221345.55 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:16,795 INFO L168 Benchmark]: CDTParser took 0.21 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 16:23:16,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2420.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:16,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 838.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:16,798 INFO L168 Benchmark]: Boogie Preprocessor took 564.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.6 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:16,799 INFO L168 Benchmark]: RCFGBuilder took 14827.41 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 230.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.1 MB). Peak memory consumption was 599.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:16,800 INFO L168 Benchmark]: TraceAbstraction took 202688.17 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:16,808 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2420.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 838.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 564.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.6 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14827.41 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 230.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.1 MB). Peak memory consumption was 599.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202688.17 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (218712states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (108 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 202.6s OverallTime, 12 OverallIterations, 8 TraceHistogramMax, 159.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8586 SDtfs, 28040 SDslu, 3101 SDs, 0 SdLazy, 56775 SolverSat, 15358 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 129.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1978 GetRequests, 1940 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260561occurred in iteration=7, 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: 21.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 69077 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 7146 NumberOfCodeBlocks, 7146 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7130 ConstructedInterpolants, 0 QuantifiedInterpolants, 9625510 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2499 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 12080/12112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown