java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:44:35,326 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:44:35,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:44:35,345 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:44:35,346 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:44:35,347 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:44:35,349 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:44:35,350 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:44:35,352 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:44:35,353 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:44:35,354 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:44:35,354 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:44:35,355 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:44:35,356 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:44:35,357 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:44:35,358 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:44:35,359 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:44:35,360 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:44:35,362 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:44:35,364 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:44:35,365 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:44:35,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:44:35,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:44:35,369 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:44:35,369 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:44:35,370 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:44:35,371 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:44:35,372 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:44:35,372 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:44:35,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:44:35,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:44:35,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:44:35,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:44:35,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:44:35,392 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:44:35,393 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:44:35,393 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:44:35,394 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:44:35,394 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:44:35,394 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:44:35,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:44:35,395 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:44:35,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:44:35,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:44:35,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:44:35,395 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:44:35,395 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:44:35,396 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:44:35,396 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:44:35,396 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:44:35,396 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:44:35,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:44:35,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:44:35,397 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:44:35,397 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:44:35,397 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:44:35,397 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:44:35,398 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:44:35,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:44:35,398 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:44:35,398 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:44:35,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:44:35,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:44:35,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:44:35,467 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:44:35,468 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:44:35,469 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c [2018-11-06 21:44:35,527 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148877365/ee5ccfe8b4d1486da74a7a7b8f75fdd8/FLAGbf1f88671 [2018-11-06 21:44:36,239 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:44:36,241 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c [2018-11-06 21:44:36,270 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148877365/ee5ccfe8b4d1486da74a7a7b8f75fdd8/FLAGbf1f88671 [2018-11-06 21:44:36,292 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148877365/ee5ccfe8b4d1486da74a7a7b8f75fdd8 [2018-11-06 21:44:36,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:44:36,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:44:36,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:44:36,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:44:36,313 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:44:36,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:44:36" (1/1) ... [2018-11-06 21:44:36,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c222be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:36, skipping insertion in model container [2018-11-06 21:44:36,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:44:36" (1/1) ... [2018-11-06 21:44:36,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:44:36,451 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:44:37,424 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:44:37,429 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:44:37,858 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:44:37,882 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:44:37,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37 WrapperNode [2018-11-06 21:44:37,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:44:37,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:44:37,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:44:37,886 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:44:37,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:44:38,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:44:38,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:44:38,377 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:44:38,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... [2018-11-06 21:44:38,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:44:38,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:44:38,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:44:38,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:44:38,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:44:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:44:38,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:44:38,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:44:48,011 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:44:48,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:44:48 BoogieIcfgContainer [2018-11-06 21:44:48,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:44:48,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:44:48,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:44:48,017 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:44:48,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:44:36" (1/3) ... [2018-11-06 21:44:48,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a9ee7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:44:48, skipping insertion in model container [2018-11-06 21:44:48,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:44:37" (2/3) ... [2018-11-06 21:44:48,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a9ee7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:44:48, skipping insertion in model container [2018-11-06 21:44:48,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:44:48" (3/3) ... [2018-11-06 21:44:48,022 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label41_true-unreach-call.c [2018-11-06 21:44:48,032 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:44:48,043 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:44:48,061 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:44:48,102 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:44:48,103 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:44:48,103 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:44:48,104 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:44:48,104 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:44:48,104 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:44:48,104 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:44:48,104 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:44:48,104 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:44:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 21:44:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-06 21:44:48,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:48,164 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] [2018-11-06 21:44:48,166 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:48,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:48,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1433927590, now seen corresponding path program 1 times [2018-11-06 21:44:48,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:48,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:48,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:48,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:48,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:44:48,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:44:48,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:44:48,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:44:48,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:44:48,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:44:48,694 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 21:44:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:44:56,562 INFO L93 Difference]: Finished difference Result 2126 states and 3956 transitions. [2018-11-06 21:44:56,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:44:56,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-06 21:44:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:44:56,600 INFO L225 Difference]: With dead ends: 2126 [2018-11-06 21:44:56,600 INFO L226 Difference]: Without dead ends: 1528 [2018-11-06 21:44:56,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:44:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2018-11-06 21:44:56,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1048. [2018-11-06 21:44:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2018-11-06 21:44:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1826 transitions. [2018-11-06 21:44:56,741 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1826 transitions. Word has length 35 [2018-11-06 21:44:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:44:56,742 INFO L480 AbstractCegarLoop]: Abstraction has 1048 states and 1826 transitions. [2018-11-06 21:44:56,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:44:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1826 transitions. [2018-11-06 21:44:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-06 21:44:56,746 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:56,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:44:56,747 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:56,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash -950653749, now seen corresponding path program 1 times [2018-11-06 21:44:56,748 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:56,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:56,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:56,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:56,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:44:57,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:44:57,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:44:57,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:44:57,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:44:57,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:44:57,101 INFO L87 Difference]: Start difference. First operand 1048 states and 1826 transitions. Second operand 4 states. [2018-11-06 21:45:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:05,846 INFO L93 Difference]: Finished difference Result 3810 states and 6822 transitions. [2018-11-06 21:45:05,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:45:05,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2018-11-06 21:45:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:05,864 INFO L225 Difference]: With dead ends: 3810 [2018-11-06 21:45:05,864 INFO L226 Difference]: Without dead ends: 2764 [2018-11-06 21:45:05,869 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:45:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2018-11-06 21:45:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2018-11-06 21:45:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2018-11-06 21:45:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4043 transitions. [2018-11-06 21:45:05,933 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4043 transitions. Word has length 107 [2018-11-06 21:45:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:05,933 INFO L480 AbstractCegarLoop]: Abstraction has 2764 states and 4043 transitions. [2018-11-06 21:45:05,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:45:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4043 transitions. [2018-11-06 21:45:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-06 21:45:05,939 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:05,939 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:45:05,939 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:05,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash 828676186, now seen corresponding path program 1 times [2018-11-06 21:45:05,940 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:05,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:05,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:05,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:05,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-06 21:45:06,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:45:06,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:45:06,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:45:06,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:45:06,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:45:06,220 INFO L87 Difference]: Start difference. First operand 2764 states and 4043 transitions. Second operand 3 states. [2018-11-06 21:45:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:10,410 INFO L93 Difference]: Finished difference Result 8080 states and 11868 transitions. [2018-11-06 21:45:10,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:45:10,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-11-06 21:45:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:10,450 INFO L225 Difference]: With dead ends: 8080 [2018-11-06 21:45:10,450 INFO L226 Difference]: Without dead ends: 5318 [2018-11-06 21:45:10,456 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:45:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2018-11-06 21:45:10,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 5318. [2018-11-06 21:45:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5318 states. [2018-11-06 21:45:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 6872 transitions. [2018-11-06 21:45:10,575 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 6872 transitions. Word has length 191 [2018-11-06 21:45:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:10,576 INFO L480 AbstractCegarLoop]: Abstraction has 5318 states and 6872 transitions. [2018-11-06 21:45:10,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:45:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 6872 transitions. [2018-11-06 21:45:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-06 21:45:10,581 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:10,582 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:45:10,582 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:10,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 920189744, now seen corresponding path program 1 times [2018-11-06 21:45:10,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:10,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:10,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:10,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:10,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:45:11,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:45:11,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:45:11,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:45:11,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:45:11,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:45:11,094 INFO L87 Difference]: Start difference. First operand 5318 states and 6872 transitions. Second operand 4 states. [2018-11-06 21:45:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:15,182 INFO L93 Difference]: Finished difference Result 11486 states and 14992 transitions. [2018-11-06 21:45:15,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:45:15,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2018-11-06 21:45:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:15,211 INFO L225 Difference]: With dead ends: 11486 [2018-11-06 21:45:15,212 INFO L226 Difference]: Without dead ends: 6170 [2018-11-06 21:45:15,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:45:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2018-11-06 21:45:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6170. [2018-11-06 21:45:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6170 states. [2018-11-06 21:45:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 7379 transitions. [2018-11-06 21:45:15,331 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 7379 transitions. Word has length 198 [2018-11-06 21:45:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:15,332 INFO L480 AbstractCegarLoop]: Abstraction has 6170 states and 7379 transitions. [2018-11-06 21:45:15,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:45:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 7379 transitions. [2018-11-06 21:45:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-06 21:45:15,338 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:15,338 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:45:15,339 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:15,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:15,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1919608372, now seen corresponding path program 1 times [2018-11-06 21:45:15,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:15,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:15,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:15,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:15,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-06 21:45:15,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:45:15,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:45:15,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:45:15,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:45:15,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:45:15,756 INFO L87 Difference]: Start difference. First operand 6170 states and 7379 transitions. Second operand 4 states. [2018-11-06 21:45:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:21,789 INFO L93 Difference]: Finished difference Result 15787 states and 19066 transitions. [2018-11-06 21:45:21,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:45:21,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2018-11-06 21:45:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:21,824 INFO L225 Difference]: With dead ends: 15787 [2018-11-06 21:45:21,824 INFO L226 Difference]: Without dead ends: 9619 [2018-11-06 21:45:21,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:45:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2018-11-06 21:45:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 8309. [2018-11-06 21:45:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8309 states. [2018-11-06 21:45:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8309 states to 8309 states and 9781 transitions. [2018-11-06 21:45:21,974 INFO L78 Accepts]: Start accepts. Automaton has 8309 states and 9781 transitions. Word has length 257 [2018-11-06 21:45:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:21,974 INFO L480 AbstractCegarLoop]: Abstraction has 8309 states and 9781 transitions. [2018-11-06 21:45:21,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:45:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 8309 states and 9781 transitions. [2018-11-06 21:45:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-06 21:45:21,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:21,981 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:45:21,982 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:21,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2097900786, now seen corresponding path program 1 times [2018-11-06 21:45:21,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:21,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:21,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:21,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:21,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 206 proven. 71 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-06 21:45:22,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:45:22,611 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:45:22,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:22,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:45:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 206 proven. 71 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-06 21:45:23,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:45:23,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-11-06 21:45:23,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:45:23,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:45:23,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:45:23,138 INFO L87 Difference]: Start difference. First operand 8309 states and 9781 transitions. Second operand 5 states. [2018-11-06 21:45:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:31,644 INFO L93 Difference]: Finished difference Result 25598 states and 30810 transitions. [2018-11-06 21:45:31,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:45:31,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2018-11-06 21:45:31,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:31,679 INFO L225 Difference]: With dead ends: 25598 [2018-11-06 21:45:31,679 INFO L226 Difference]: Without dead ends: 15099 [2018-11-06 21:45:31,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:45:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15099 states. [2018-11-06 21:45:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15099 to 13389. [2018-11-06 21:45:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13389 states. [2018-11-06 21:45:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13389 states to 13389 states and 14998 transitions. [2018-11-06 21:45:31,910 INFO L78 Accepts]: Start accepts. Automaton has 13389 states and 14998 transitions. Word has length 262 [2018-11-06 21:45:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:31,910 INFO L480 AbstractCegarLoop]: Abstraction has 13389 states and 14998 transitions. [2018-11-06 21:45:31,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:45:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 13389 states and 14998 transitions. [2018-11-06 21:45:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-11-06 21:45:31,917 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:31,917 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:45:31,917 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:31,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:31,918 INFO L82 PathProgramCache]: Analyzing trace with hash -914177385, now seen corresponding path program 1 times [2018-11-06 21:45:31,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:31,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:31,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:31,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:31,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-11-06 21:45:32,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:45:32,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:45:32,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:45:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:45:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:45:32,397 INFO L87 Difference]: Start difference. First operand 13389 states and 14998 transitions. Second operand 4 states. [2018-11-06 21:45:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:37,282 INFO L93 Difference]: Finished difference Result 36602 states and 41054 transitions. [2018-11-06 21:45:37,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:45:37,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2018-11-06 21:45:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:37,335 INFO L225 Difference]: With dead ends: 36602 [2018-11-06 21:45:37,336 INFO L226 Difference]: Without dead ends: 22779 [2018-11-06 21:45:37,349 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:45:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22779 states. [2018-11-06 21:45:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22779 to 18076. [2018-11-06 21:45:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18076 states. [2018-11-06 21:45:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18076 states to 18076 states and 19984 transitions. [2018-11-06 21:45:37,598 INFO L78 Accepts]: Start accepts. Automaton has 18076 states and 19984 transitions. Word has length 298 [2018-11-06 21:45:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:37,599 INFO L480 AbstractCegarLoop]: Abstraction has 18076 states and 19984 transitions. [2018-11-06 21:45:37,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:45:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 18076 states and 19984 transitions. [2018-11-06 21:45:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-11-06 21:45:37,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:37,615 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 21:45:37,615 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:37,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1544866570, now seen corresponding path program 1 times [2018-11-06 21:45:37,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:37,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:37,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:37,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:37,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 498 proven. 83 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-11-06 21:45:38,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:45:38,376 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:45:38,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:38,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:45:38,877 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-11-06 21:45:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 591 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-11-06 21:45:39,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:45:39,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-06 21:45:39,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:45:39,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:45:39,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:45:39,233 INFO L87 Difference]: Start difference. First operand 18076 states and 19984 transitions. Second operand 7 states. [2018-11-06 21:45:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:55,155 INFO L93 Difference]: Finished difference Result 87792 states and 96701 transitions. [2018-11-06 21:45:55,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:45:55,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 441 [2018-11-06 21:45:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:55,232 INFO L225 Difference]: With dead ends: 87792 [2018-11-06 21:45:55,232 INFO L226 Difference]: Without dead ends: 61155 [2018-11-06 21:45:55,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:45:55,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61155 states. [2018-11-06 21:45:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61155 to 53455. [2018-11-06 21:45:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53455 states. [2018-11-06 21:45:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53455 states to 53455 states and 57026 transitions. [2018-11-06 21:45:56,157 INFO L78 Accepts]: Start accepts. Automaton has 53455 states and 57026 transitions. Word has length 441 [2018-11-06 21:45:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:56,158 INFO L480 AbstractCegarLoop]: Abstraction has 53455 states and 57026 transitions. [2018-11-06 21:45:56,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:45:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 53455 states and 57026 transitions. [2018-11-06 21:45:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-11-06 21:45:56,184 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:56,185 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:45:56,185 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:56,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash 502496031, now seen corresponding path program 1 times [2018-11-06 21:45:56,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:56,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:56,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:56,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:56,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-11-06 21:45:56,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:45:56,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:45:56,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:45:56,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:45:56,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:45:56,735 INFO L87 Difference]: Start difference. First operand 53455 states and 57026 transitions. Second operand 5 states. [2018-11-06 21:46:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:46:02,968 INFO L93 Difference]: Finished difference Result 136798 states and 146915 transitions. [2018-11-06 21:46:02,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:46:02,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 507 [2018-11-06 21:46:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:46:03,078 INFO L225 Difference]: With dead ends: 136798 [2018-11-06 21:46:03,078 INFO L226 Difference]: Without dead ends: 84628 [2018-11-06 21:46:03,117 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:46:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84628 states. [2018-11-06 21:46:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84628 to 62013. [2018-11-06 21:46:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62013 states. [2018-11-06 21:46:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62013 states to 62013 states and 66191 transitions. [2018-11-06 21:46:04,493 INFO L78 Accepts]: Start accepts. Automaton has 62013 states and 66191 transitions. Word has length 507 [2018-11-06 21:46:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:46:04,493 INFO L480 AbstractCegarLoop]: Abstraction has 62013 states and 66191 transitions. [2018-11-06 21:46:04,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:46:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 62013 states and 66191 transitions. [2018-11-06 21:46:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-11-06 21:46:04,517 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:46:04,517 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 21:46:04,517 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:46:04,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:46:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash -442904605, now seen corresponding path program 1 times [2018-11-06 21:46:04,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:46:04,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:46:04,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:04,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:46:04,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:46:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:46:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 33 proven. 528 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-06 21:46:05,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:46:05,257 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:46:05,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:46:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:46:05,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:46:07,853 WARN L179 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 120 DAG size of output: 32 [2018-11-06 21:46:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-06 21:46:09,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:46:09,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 21:46:09,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:46:09,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:46:09,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:46:09,878 INFO L87 Difference]: Start difference. First operand 62013 states and 66191 transitions. Second operand 8 states. Received shutdown request... [2018-11-06 21:48:50,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 21:48:50,994 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:48:50,999 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:48:50,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:48:50 BoogieIcfgContainer [2018-11-06 21:48:50,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:48:51,000 INFO L168 Benchmark]: Toolchain (without parser) took 254693.74 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -128.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:48:51,001 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:48:51,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1574.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:51,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 493.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.2 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:51,004 INFO L168 Benchmark]: Boogie Preprocessor took 411.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:51,005 INFO L168 Benchmark]: RCFGBuilder took 9224.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.7 MB). Peak memory consumption was 480.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:48:51,007 INFO L168 Benchmark]: TraceAbstraction took 242985.56 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 147.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-06 21:48:51,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1574.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 493.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.2 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 411.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9224.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 480.7 MB). Peak memory consumption was 480.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242985.56 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 147.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 110). Cancelled while BasicCegarLoop was constructing difference of abstraction (62013states) and FLOYD_HOARE automaton (currently 10 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (39821 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 242.9s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 228.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4243 SDtfs, 15731 SDslu, 2217 SDs, 0 SdLazy, 40986 SolverSat, 6611 SolverUnsat, 68 SolverUnknown, 0 SolverNotchecked, 214.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1265 GetRequests, 1225 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62013occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 38518 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4015 NumberOfCodeBlocks, 4015 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4002 ConstructedInterpolants, 240 QuantifiedInterpolants, 11436153 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1631 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 4353/5106 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown