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/Problem19_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:02:39,290 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:02:39,292 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:02:39,304 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:02:39,304 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:02:39,305 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:02:39,307 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:02:39,308 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:02:39,310 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:02:39,311 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:02:39,312 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:02:39,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:02:39,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:02:39,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:02:39,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:02:39,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:02:39,317 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:02:39,319 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:02:39,321 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:02:39,323 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:02:39,324 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:02:39,325 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:02:39,329 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:02:39,329 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:02:39,329 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:02:39,330 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:02:39,335 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:02:39,336 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:02:39,340 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:02:39,341 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:02:39,341 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:02:39,342 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 17:02:39,347 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 17:02:39,371 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:02:39,371 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:02:39,372 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:02:39,372 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:02:39,373 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:02:39,373 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:02:39,373 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:02:39,373 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:02:39,374 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:02:39,374 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:02:39,374 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:02:39,374 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:02:39,374 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:02:39,375 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:02:39,375 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:02:39,375 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:02:39,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:02:39,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:02:39,376 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:02:39,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:02:39,376 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:02:39,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:02:39,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:02:39,377 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:02:39,377 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:02:39,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:02:39,377 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:02:39,377 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:02:39,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:02:39,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:02:39,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:02:39,459 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:02:39,459 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:02:39,460 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c [2018-10-24 17:02:39,527 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/585b563f1/d40f5841782142b29d333ba6bb3c7881/FLAG5f504a152 [2018-10-24 17:02:40,450 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:02:40,453 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c [2018-10-24 17:02:40,500 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/585b563f1/d40f5841782142b29d333ba6bb3c7881/FLAG5f504a152 [2018-10-24 17:02:40,515 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/585b563f1/d40f5841782142b29d333ba6bb3c7881 [2018-10-24 17:02:40,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:02:40,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:02:40,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:40,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:02:40,537 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:02:40,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:40" (1/1) ... [2018-10-24 17:02:40,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:40, skipping insertion in model container [2018-10-24 17:02:40,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:40" (1/1) ... [2018-10-24 17:02:40,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:02:40,803 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:02:42,728 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:42,733 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:02:43,715 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:43,768 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:02:43,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43 WrapperNode [2018-10-24 17:02:43,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:43,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:43,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:02:43,770 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:02:43,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:43,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:44,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:44,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:02:44,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:02:44,830 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:02:44,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:44,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:44,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:44,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:45,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:45,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:45,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (1/1) ... [2018-10-24 17:02:45,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:02:45,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:02:45,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:02:45,647 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:02:45,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (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 17:02:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:02:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:02:45,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:03:02,460 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:03:02,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:02 BoogieIcfgContainer [2018-10-24 17:03:02,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:03:02,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:03:02,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:03:02,469 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:03:02,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:02:40" (1/3) ... [2018-10-24 17:03:02,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:02, skipping insertion in model container [2018-10-24 17:03:02,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:43" (2/3) ... [2018-10-24 17:03:02,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:02, skipping insertion in model container [2018-10-24 17:03:02,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:02" (3/3) ... [2018-10-24 17:03:02,474 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label08_true-unreach-call.c [2018-10-24 17:03:02,484 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:03:02,506 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:03:02,522 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:03:02,851 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:03:02,852 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:03:02,852 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:03:02,852 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:03:02,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:03:02,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:03:02,853 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:03:02,853 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:03:02,853 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:03:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:03:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 17:03:02,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:02,921 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] [2018-10-24 17:03:02,923 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:02,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash -387853398, now seen corresponding path program 1 times [2018-10-24 17:03:02,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:02,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:02,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:02,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:02,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:03,486 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 17:03:03,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:03,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:03,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:03,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:03,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:03,514 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:03:25,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:25,195 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-24 17:03:25,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:25,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-24 17:03:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:25,261 INFO L225 Difference]: With dead ends: 6324 [2018-10-24 17:03:25,261 INFO L226 Difference]: Without dead ends: 4568 [2018-10-24 17:03:25,272 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 17:03:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-24 17:03:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-24 17:03:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-24 17:03:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-24 17:03:25,483 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 38 [2018-10-24 17:03:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:25,484 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-24 17:03:25,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-24 17:03:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 17:03:25,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:25,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:25,490 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:25,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:25,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2122648538, now seen corresponding path program 1 times [2018-10-24 17:03:25,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:25,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:25,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:25,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:25,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:25,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:25,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:25,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:25,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:25,921 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-24 17:03:57,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:57,173 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-24 17:03:57,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:57,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2018-10-24 17:03:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:57,243 INFO L225 Difference]: With dead ends: 17544 [2018-10-24 17:03:57,243 INFO L226 Difference]: Without dead ends: 12983 [2018-10-24 17:03:57,252 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 17:03:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-24 17:03:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-24 17:03:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-24 17:03:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-24 17:03:57,450 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 116 [2018-10-24 17:03:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:57,451 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-24 17:03:57,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-24 17:03:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 17:03:57,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:57,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:57,459 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:57,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1684149562, now seen corresponding path program 1 times [2018-10-24 17:03:57,460 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:57,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:57,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:57,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:57,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:57,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:57,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:57,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:57,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:57,683 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-24 17:04:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:21,247 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-24 17:04:21,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:21,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-24 17:04:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:21,327 INFO L225 Difference]: With dead ends: 33991 [2018-10-24 17:04:21,328 INFO L226 Difference]: Without dead ends: 25331 [2018-10-24 17:04:21,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 17:04:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-24 17:04:21,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-24 17:04:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-24 17:04:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-24 17:04:21,748 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 136 [2018-10-24 17:04:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:21,748 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-24 17:04:21,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-24 17:04:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 17:04:21,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:21,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:21,751 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:21,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1383612961, now seen corresponding path program 1 times [2018-10-24 17:04:21,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:21,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:21,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:21,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:21,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:22,049 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:04:22,681 WARN L179 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:04:22,852 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:04:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:23,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:23,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:04:23,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:04:23,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:04:23,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:04:23,096 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-24 17:04:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:50,379 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-24 17:04:50,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:04:50,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 17:04:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:50,490 INFO L225 Difference]: With dead ends: 82151 [2018-10-24 17:04:50,490 INFO L226 Difference]: Without dead ends: 56832 [2018-10-24 17:04:50,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:04:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-24 17:04:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-24 17:04:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-24 17:04:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-24 17:04:51,254 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 143 [2018-10-24 17:04:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:51,255 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-24 17:04:51,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:04:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-24 17:04:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-24 17:04:51,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:51,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:51,265 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:51,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:51,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1521874531, now seen corresponding path program 1 times [2018-10-24 17:04:51,266 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:51,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:51,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:51,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:51,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:51,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:51,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:04:51,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:51,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:51,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:51,668 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 4 states. [2018-10-24 17:05:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:13,255 INFO L93 Difference]: Finished difference Result 140975 states and 184048 transitions. [2018-10-24 17:05:13,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:13,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2018-10-24 17:05:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:13,359 INFO L225 Difference]: With dead ends: 140975 [2018-10-24 17:05:13,359 INFO L226 Difference]: Without dead ends: 80121 [2018-10-24 17:05:13,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 17:05:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80121 states. [2018-10-24 17:05:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80121 to 75896. [2018-10-24 17:05:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75896 states. [2018-10-24 17:05:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75896 states to 75896 states and 95166 transitions. [2018-10-24 17:05:14,473 INFO L78 Accepts]: Start accepts. Automaton has 75896 states and 95166 transitions. Word has length 274 [2018-10-24 17:05:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:14,474 INFO L481 AbstractCegarLoop]: Abstraction has 75896 states and 95166 transitions. [2018-10-24 17:05:14,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 75896 states and 95166 transitions. [2018-10-24 17:05:14,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-10-24 17:05:14,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:14,506 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:05:14,506 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:14,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:14,507 INFO L82 PathProgramCache]: Analyzing trace with hash 894602340, now seen corresponding path program 1 times [2018-10-24 17:05:14,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:14,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:14,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:14,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:14,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-10-24 17:05:15,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:15,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:05:15,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:15,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:15,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:15,773 INFO L87 Difference]: Start difference. First operand 75896 states and 95166 transitions. Second operand 4 states. [2018-10-24 17:05:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:38,752 INFO L93 Difference]: Finished difference Result 170911 states and 214797 transitions. [2018-10-24 17:05:38,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:38,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 748 [2018-10-24 17:05:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:38,893 INFO L225 Difference]: With dead ends: 170911 [2018-10-24 17:05:38,893 INFO L226 Difference]: Without dead ends: 95017 [2018-10-24 17:05:38,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 17:05:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95017 states. [2018-10-24 17:05:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95017 to 95007. [2018-10-24 17:05:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95007 states. [2018-10-24 17:05:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95007 states to 95007 states and 110244 transitions. [2018-10-24 17:05:39,904 INFO L78 Accepts]: Start accepts. Automaton has 95007 states and 110244 transitions. Word has length 748 [2018-10-24 17:05:39,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:39,905 INFO L481 AbstractCegarLoop]: Abstraction has 95007 states and 110244 transitions. [2018-10-24 17:05:39,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:39,906 INFO L276 IsEmpty]: Start isEmpty. Operand 95007 states and 110244 transitions. [2018-10-24 17:05:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2018-10-24 17:05:39,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:39,947 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:39,947 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:39,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1589112164, now seen corresponding path program 1 times [2018-10-24 17:05:39,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:39,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:39,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:39,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:39,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:41,117 WARN L179 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:05:41,299 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-24 17:05:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 293 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 17:05:42,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:05:42,585 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 17:05:42,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:42,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:05:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 17:05:43,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:05:43,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:05:43,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:05:43,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:05:43,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:05:43,716 INFO L87 Difference]: Start difference. First operand 95007 states and 110244 transitions. Second operand 5 states. [2018-10-24 17:06:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:05,932 INFO L93 Difference]: Finished difference Result 214603 states and 247131 transitions. [2018-10-24 17:06:05,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:06:05,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 889 [2018-10-24 17:06:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:06,067 INFO L225 Difference]: With dead ends: 214603 [2018-10-24 17:06:06,067 INFO L226 Difference]: Without dead ends: 110025 [2018-10-24 17:06:06,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 889 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:06:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110025 states. [2018-10-24 17:06:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110025 to 108657. [2018-10-24 17:06:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108657 states. [2018-10-24 17:06:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108657 states to 108657 states and 118444 transitions. [2018-10-24 17:06:08,365 INFO L78 Accepts]: Start accepts. Automaton has 108657 states and 118444 transitions. Word has length 889 [2018-10-24 17:06:08,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:08,366 INFO L481 AbstractCegarLoop]: Abstraction has 108657 states and 118444 transitions. [2018-10-24 17:06:08,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:06:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 108657 states and 118444 transitions. [2018-10-24 17:06:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-10-24 17:06:08,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:08,387 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:06:08,388 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:08,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash -496820180, now seen corresponding path program 1 times [2018-10-24 17:06:08,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:08,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:08,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:08,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:08,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-24 17:06:09,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:09,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:09,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:06:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:06:09,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:06:09,616 INFO L87 Difference]: Start difference. First operand 108657 states and 118444 transitions. Second operand 3 states. [2018-10-24 17:06:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:20,384 INFO L93 Difference]: Finished difference Result 267856 states and 293250 transitions. [2018-10-24 17:06:20,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:06:20,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 957 [2018-10-24 17:06:20,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:20,596 INFO L225 Difference]: With dead ends: 267856 [2018-10-24 17:06:20,596 INFO L226 Difference]: Without dead ends: 159201 [2018-10-24 17:06:20,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:06:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159201 states. [2018-10-24 17:06:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159201 to 129147. [2018-10-24 17:06:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129147 states. [2018-10-24 17:06:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129147 states to 129147 states and 139664 transitions. [2018-10-24 17:06:22,262 INFO L78 Accepts]: Start accepts. Automaton has 129147 states and 139664 transitions. Word has length 957 [2018-10-24 17:06:22,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:22,264 INFO L481 AbstractCegarLoop]: Abstraction has 129147 states and 139664 transitions. [2018-10-24 17:06:22,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:06:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 129147 states and 139664 transitions. [2018-10-24 17:06:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2018-10-24 17:06:22,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:22,301 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:06:22,301 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:22,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:22,302 INFO L82 PathProgramCache]: Analyzing trace with hash 941624548, now seen corresponding path program 1 times [2018-10-24 17:06:22,302 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:22,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:22,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:22,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:22,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-24 17:06:24,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:24,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:24,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:06:24,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:06:24,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:06:24,606 INFO L87 Difference]: Start difference. First operand 129147 states and 139664 transitions. Second operand 3 states. Received shutdown request... [2018-10-24 17:06:29,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:06:29,956 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:06:29,963 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:06:29,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:06:29 BoogieIcfgContainer [2018-10-24 17:06:29,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:06:29,964 INFO L168 Benchmark]: Toolchain (without parser) took 229436.03 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 955.6 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:29,966 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:06:29,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3237.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 999.3 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:29,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 1059.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 999.3 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:29,968 INFO L168 Benchmark]: Boogie Preprocessor took 816.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.8 MB). Peak memory consumption was 114.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:29,969 INFO L168 Benchmark]: RCFGBuilder took 16815.23 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 256.9 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 527.4 MB). Peak memory consumption was 784.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:29,970 INFO L168 Benchmark]: TraceAbstraction took 207498.31 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 925.9 MB). Free memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: -976.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:06:29,975 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3237.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 999.3 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1059.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 999.3 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 816.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.8 MB). Peak memory consumption was 114.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16815.23 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 256.9 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 527.4 MB). Peak memory consumption was 784.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207498.31 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 925.9 MB). Free memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: -976.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 127). Cancelled while BasicCegarLoop was constructing difference of abstraction (129147states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (58657 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 187.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12472 SDtfs, 33525 SDslu, 3111 SDs, 0 SdLazy, 73457 SolverSat, 17173 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 161.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 934 GetRequests, 902 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129147occurred 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: 7.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 41435 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 5276 NumberOfCodeBlocks, 5276 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5266 ConstructedInterpolants, 0 QuantifiedInterpolants, 9724687 SizeOfPredicates, 5 NumberOfNonLiveVariables, 989 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3431/3435 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown