java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:11:49,629 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:11:49,631 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:11:49,645 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:11:49,645 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:11:49,646 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:11:49,648 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:11:49,650 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:11:49,651 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:11:49,652 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:11:49,653 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:11:49,653 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:11:49,654 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:11:49,655 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:11:49,657 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:11:49,657 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:11:49,658 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:11:49,660 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:11:49,662 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:11:49,664 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:11:49,665 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:11:49,666 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:11:49,669 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:11:49,669 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:11:49,669 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:11:49,670 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:11:49,671 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:11:49,672 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:11:49,673 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:11:49,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:11:49,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:11:49,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:11:49,680 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 14:11:49,695 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:11:49,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:11:49,696 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:11:49,696 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:11:49,697 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:11:49,697 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:11:49,697 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:11:49,697 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:11:49,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:11:49,698 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:11:49,698 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:11:49,698 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:11:49,698 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:11:49,699 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:11:49,699 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:11:49,699 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:11:49,699 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:11:49,699 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:11:49,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:11:49,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:11:49,700 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:11:49,700 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:11:49,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:11:49,701 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:11:49,701 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:11:49,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:11:49,701 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:11:49,701 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:11:49,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:11:49,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:11:49,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:11:49,772 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:11:49,773 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:11:49,774 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-24 14:11:49,840 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d2290ac4/58ae797ee3d1466c87bdac653f354637/FLAG99ef6357f [2018-10-24 14:11:50,658 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:11:50,659 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label43_false-unreach-call.c [2018-10-24 14:11:50,693 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d2290ac4/58ae797ee3d1466c87bdac653f354637/FLAG99ef6357f [2018-10-24 14:11:50,711 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1d2290ac4/58ae797ee3d1466c87bdac653f354637 [2018-10-24 14:11:50,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:11:50,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:11:50,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:11:50,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:11:50,737 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:11:50,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:11:50" (1/1) ... [2018-10-24 14:11:50,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:50, skipping insertion in model container [2018-10-24 14:11:50,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:11:50" (1/1) ... [2018-10-24 14:11:50,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:11:50,956 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:11:52,552 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:11:52,563 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:11:53,357 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:11:53,398 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:11:53,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53 WrapperNode [2018-10-24 14:11:53,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:11:53,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:11:53,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:11:53,401 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:11:53,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:53,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:11:54,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:11:54,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:11:54,236 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:11:54,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (1/1) ... [2018-10-24 14:11:54,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:11:54,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:11:54,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:11:54,760 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:11:54,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (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 14:11:54,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:11:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:11:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:12:10,025 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:12:10,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:12:10 BoogieIcfgContainer [2018-10-24 14:12:10,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:12:10,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:12:10,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:12:10,030 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:12:10,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:11:50" (1/3) ... [2018-10-24 14:12:10,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:12:10, skipping insertion in model container [2018-10-24 14:12:10,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:11:53" (2/3) ... [2018-10-24 14:12:10,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:12:10, skipping insertion in model container [2018-10-24 14:12:10,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:12:10" (3/3) ... [2018-10-24 14:12:10,034 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label43_false-unreach-call.c [2018-10-24 14:12:10,045 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:12:10,055 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:12:10,073 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:12:10,129 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:12:10,129 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:12:10,130 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:12:10,130 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:12:10,130 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:12:10,130 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:12:10,130 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:12:10,130 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:12:10,130 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:12:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:12:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-24 14:12:10,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:10,201 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:10,203 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:10,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:10,210 INFO L82 PathProgramCache]: Analyzing trace with hash -686802918, now seen corresponding path program 1 times [2018-10-24 14:12:10,212 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:10,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:10,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:10,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:10,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:10,599 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 14:12:10,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:10,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:12:10,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:10,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:10,622 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:12:27,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:27,230 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-24 14:12:27,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:27,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-10-24 14:12:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:27,275 INFO L225 Difference]: With dead ends: 3863 [2018-10-24 14:12:27,276 INFO L226 Difference]: Without dead ends: 2757 [2018-10-24 14:12:27,285 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 14:12:27,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-24 14:12:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-24 14:12:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-24 14:12:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-24 14:12:27,447 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 19 [2018-10-24 14:12:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:27,447 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-24 14:12:27,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-24 14:12:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 14:12:27,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:27,453 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:12:27,453 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:27,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:27,454 INFO L82 PathProgramCache]: Analyzing trace with hash -689790280, now seen corresponding path program 1 times [2018-10-24 14:12:27,454 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:27,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:27,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:27,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:27,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:12:27,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:27,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:12:27,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:27,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:27,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:27,912 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-24 14:12:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:41,391 INFO L93 Difference]: Finished difference Result 10269 states and 17048 transitions. [2018-10-24 14:12:41,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:41,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-24 14:12:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:41,435 INFO L225 Difference]: With dead ends: 10269 [2018-10-24 14:12:41,436 INFO L226 Difference]: Without dead ends: 7535 [2018-10-24 14:12:41,443 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 14:12:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-24 14:12:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7527. [2018-10-24 14:12:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7527 states. [2018-10-24 14:12:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11327 transitions. [2018-10-24 14:12:41,601 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11327 transitions. Word has length 106 [2018-10-24 14:12:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:41,602 INFO L481 AbstractCegarLoop]: Abstraction has 7527 states and 11327 transitions. [2018-10-24 14:12:41,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11327 transitions. [2018-10-24 14:12:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 14:12:41,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:41,605 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:12:41,606 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:41,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1500021945, now seen corresponding path program 1 times [2018-10-24 14:12:41,606 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:41,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:41,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:41,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:41,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:12:42,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:12:42,014 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 14:12:42,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:42,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:12:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-24 14:12:42,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:12:42,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-24 14:12:42,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:12:42,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:12:42,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:12:42,262 INFO L87 Difference]: Start difference. First operand 7527 states and 11327 transitions. Second operand 6 states. [2018-10-24 14:13:14,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:14,771 INFO L93 Difference]: Finished difference Result 65291 states and 99022 transitions. [2018-10-24 14:13:14,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:13:14,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-24 14:13:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:14,968 INFO L225 Difference]: With dead ends: 65291 [2018-10-24 14:13:14,968 INFO L226 Difference]: Without dead ends: 57766 [2018-10-24 14:13:14,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:13:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57766 states. [2018-10-24 14:13:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57766 to 57478. [2018-10-24 14:13:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57478 states. [2018-10-24 14:13:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57478 states to 57478 states and 76550 transitions. [2018-10-24 14:13:16,016 INFO L78 Accepts]: Start accepts. Automaton has 57478 states and 76550 transitions. Word has length 116 [2018-10-24 14:13:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:16,017 INFO L481 AbstractCegarLoop]: Abstraction has 57478 states and 76550 transitions. [2018-10-24 14:13:16,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:13:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 57478 states and 76550 transitions. [2018-10-24 14:13:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-24 14:13:16,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:16,034 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:16,034 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:16,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1532722693, now seen corresponding path program 1 times [2018-10-24 14:13:16,035 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:16,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:16,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:16,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:16,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-24 14:13:16,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:16,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:16,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:16,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:16,471 INFO L87 Difference]: Start difference. First operand 57478 states and 76550 transitions. Second operand 4 states. [2018-10-24 14:13:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:31,731 INFO L93 Difference]: Finished difference Result 186014 states and 248155 transitions. [2018-10-24 14:13:31,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:31,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 280 [2018-10-24 14:13:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:31,918 INFO L225 Difference]: With dead ends: 186014 [2018-10-24 14:13:31,919 INFO L226 Difference]: Without dead ends: 128538 [2018-10-24 14:13:32,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128538 states. [2018-10-24 14:13:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128538 to 92936. [2018-10-24 14:13:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92936 states. [2018-10-24 14:13:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92936 states to 92936 states and 118548 transitions. [2018-10-24 14:13:33,342 INFO L78 Accepts]: Start accepts. Automaton has 92936 states and 118548 transitions. Word has length 280 [2018-10-24 14:13:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:33,342 INFO L481 AbstractCegarLoop]: Abstraction has 92936 states and 118548 transitions. [2018-10-24 14:13:33,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 92936 states and 118548 transitions. [2018-10-24 14:13:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-24 14:13:33,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:33,365 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:13:33,365 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:33,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:33,366 INFO L82 PathProgramCache]: Analyzing trace with hash 386555990, now seen corresponding path program 1 times [2018-10-24 14:13:33,366 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:33,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:33,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:33,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:33,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-24 14:13:33,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:33,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:13:33,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:13:33,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:13:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:13:33,723 INFO L87 Difference]: Start difference. First operand 92936 states and 118548 transitions. Second operand 3 states. [2018-10-24 14:13:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:43,309 INFO L93 Difference]: Finished difference Result 247320 states and 315873 transitions. [2018-10-24 14:13:43,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:13:43,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 364 [2018-10-24 14:13:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:43,575 INFO L225 Difference]: With dead ends: 247320 [2018-10-24 14:13:43,575 INFO L226 Difference]: Without dead ends: 155174 [2018-10-24 14:13:43,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:13:43,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155174 states. [2018-10-24 14:13:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155174 to 155159. [2018-10-24 14:13:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155159 states. [2018-10-24 14:13:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155159 states to 155159 states and 184823 transitions. [2018-10-24 14:13:46,287 INFO L78 Accepts]: Start accepts. Automaton has 155159 states and 184823 transitions. Word has length 364 [2018-10-24 14:13:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:46,288 INFO L481 AbstractCegarLoop]: Abstraction has 155159 states and 184823 transitions. [2018-10-24 14:13:46,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:13:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 155159 states and 184823 transitions. [2018-10-24 14:13:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-24 14:13:46,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:46,322 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2018-10-24 14:13:46,323 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:46,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1902467750, now seen corresponding path program 1 times [2018-10-24 14:13:46,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:46,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:46,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:46,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:46,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:46,886 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 14:13:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-24 14:13:47,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:47,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:47,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:47,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:47,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:47,044 INFO L87 Difference]: Start difference. First operand 155159 states and 184823 transitions. Second operand 4 states. [2018-10-24 14:14:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:01,376 INFO L93 Difference]: Finished difference Result 365541 states and 432224 transitions. [2018-10-24 14:14:01,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:01,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2018-10-24 14:14:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:01,645 INFO L225 Difference]: With dead ends: 365541 [2018-10-24 14:14:01,645 INFO L226 Difference]: Without dead ends: 211172 [2018-10-24 14:14:01,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211172 states. [2018-10-24 14:14:03,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211172 to 188251. [2018-10-24 14:14:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188251 states. [2018-10-24 14:14:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188251 states to 188251 states and 220116 transitions. [2018-10-24 14:14:03,478 INFO L78 Accepts]: Start accepts. Automaton has 188251 states and 220116 transitions. Word has length 368 [2018-10-24 14:14:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:03,479 INFO L481 AbstractCegarLoop]: Abstraction has 188251 states and 220116 transitions. [2018-10-24 14:14:03,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 188251 states and 220116 transitions. [2018-10-24 14:14:03,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-24 14:14:03,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:03,503 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:03,504 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:03,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:03,504 INFO L82 PathProgramCache]: Analyzing trace with hash 347716093, now seen corresponding path program 1 times [2018-10-24 14:14:03,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:03,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:03,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:03,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:03,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-24 14:14:03,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:03,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:14:03,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:14:03,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:14:03,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:14:03,997 INFO L87 Difference]: Start difference. First operand 188251 states and 220116 transitions. Second operand 5 states. [2018-10-24 14:14:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:19,942 INFO L93 Difference]: Finished difference Result 393081 states and 457968 transitions. [2018-10-24 14:14:19,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:14:19,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 412 [2018-10-24 14:14:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:20,222 INFO L225 Difference]: With dead ends: 393081 [2018-10-24 14:14:20,223 INFO L226 Difference]: Without dead ends: 205620 [2018-10-24 14:14:20,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:14:20,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205620 states. [2018-10-24 14:14:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205620 to 205593. [2018-10-24 14:14:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205593 states. [2018-10-24 14:14:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205593 states to 205593 states and 237966 transitions. [2018-10-24 14:14:23,630 INFO L78 Accepts]: Start accepts. Automaton has 205593 states and 237966 transitions. Word has length 412 [2018-10-24 14:14:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:23,631 INFO L481 AbstractCegarLoop]: Abstraction has 205593 states and 237966 transitions. [2018-10-24 14:14:23,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:14:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 205593 states and 237966 transitions. [2018-10-24 14:14:23,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-10-24 14:14:23,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:23,654 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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 14:14:23,655 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:23,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1819023425, now seen corresponding path program 1 times [2018-10-24 14:14:23,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:23,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:23,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:23,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:23,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-24 14:14:25,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:25,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:14:25,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:25,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:25,692 INFO L87 Difference]: Start difference. First operand 205593 states and 237966 transitions. Second operand 4 states. [2018-10-24 14:14:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:41,718 INFO L93 Difference]: Finished difference Result 464033 states and 540516 transitions. [2018-10-24 14:14:41,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:41,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2018-10-24 14:14:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:42,089 INFO L225 Difference]: With dead ends: 464033 [2018-10-24 14:14:42,090 INFO L226 Difference]: Without dead ends: 259230 [2018-10-24 14:14:42,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259230 states. [2018-10-24 14:14:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259230 to 248124. [2018-10-24 14:14:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248124 states. [2018-10-24 14:14:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248124 states to 248124 states and 278955 transitions. [2018-10-24 14:14:51,617 INFO L78 Accepts]: Start accepts. Automaton has 248124 states and 278955 transitions. Word has length 468 [2018-10-24 14:14:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:51,618 INFO L481 AbstractCegarLoop]: Abstraction has 248124 states and 278955 transitions. [2018-10-24 14:14:51,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 248124 states and 278955 transitions. [2018-10-24 14:14:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-24 14:14:51,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:51,637 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 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, 1] [2018-10-24 14:14:51,637 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:51,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:51,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1054301306, now seen corresponding path program 1 times [2018-10-24 14:14:51,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:51,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:51,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:51,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:51,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-24 14:14:52,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:52,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:14:52,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:52,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:52,752 INFO L87 Difference]: Start difference. First operand 248124 states and 278955 transitions. Second operand 4 states. [2018-10-24 14:15:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:05,258 INFO L93 Difference]: Finished difference Result 538010 states and 603361 transitions. [2018-10-24 14:15:05,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:15:05,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2018-10-24 14:15:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:05,648 INFO L225 Difference]: With dead ends: 538010 [2018-10-24 14:15:05,648 INFO L226 Difference]: Without dead ends: 252755 [2018-10-24 14:15:06,407 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 14:15:06,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252755 states. [2018-10-24 14:15:09,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252755 to 243294. [2018-10-24 14:15:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243294 states. [2018-10-24 14:15:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243294 states to 243294 states and 268021 transitions. [2018-10-24 14:15:09,335 INFO L78 Accepts]: Start accepts. Automaton has 243294 states and 268021 transitions. Word has length 494 [2018-10-24 14:15:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:15:09,335 INFO L481 AbstractCegarLoop]: Abstraction has 243294 states and 268021 transitions. [2018-10-24 14:15:09,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:15:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 243294 states and 268021 transitions. [2018-10-24 14:15:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-10-24 14:15:09,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:15:09,344 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:09,344 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:15:09,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:15:09,345 INFO L82 PathProgramCache]: Analyzing trace with hash 31785022, now seen corresponding path program 1 times [2018-10-24 14:15:09,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:15:09,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:15:09,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:09,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:09,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-24 14:15:10,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:15:10,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:15:10,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:15:10,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:15:10,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:15:10,422 INFO L87 Difference]: Start difference. First operand 243294 states and 268021 transitions. Second operand 3 states. [2018-10-24 14:15:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:20,207 INFO L93 Difference]: Finished difference Result 485006 states and 534509 transitions. [2018-10-24 14:15:20,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:15:20,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 509 [2018-10-24 14:15:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:20,502 INFO L225 Difference]: With dead ends: 485006 [2018-10-24 14:15:20,502 INFO L226 Difference]: Without dead ends: 242502 [2018-10-24 14:15:20,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 5 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 14:15:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242502 states. [2018-10-24 14:15:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242502 to 223571. [2018-10-24 14:15:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223571 states. [2018-10-24 14:15:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223571 states to 223571 states and 240736 transitions. [2018-10-24 14:15:23,166 INFO L78 Accepts]: Start accepts. Automaton has 223571 states and 240736 transitions. Word has length 509 [2018-10-24 14:15:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:15:23,167 INFO L481 AbstractCegarLoop]: Abstraction has 223571 states and 240736 transitions. [2018-10-24 14:15:23,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:15:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 223571 states and 240736 transitions. [2018-10-24 14:15:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-10-24 14:15:23,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:15:23,186 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:15:23,186 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:15:23,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:15:23,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1987938184, now seen corresponding path program 1 times [2018-10-24 14:15:23,187 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:15:23,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:15:23,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:23,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:23,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:23,579 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:15:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-10-24 14:15:24,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:15:24,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:15:24,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:15:24,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:15:24,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:15:24,599 INFO L87 Difference]: Start difference. First operand 223571 states and 240736 transitions. Second operand 4 states. [2018-10-24 14:15:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:38,483 INFO L93 Difference]: Finished difference Result 480261 states and 518112 transitions. [2018-10-24 14:15:38,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:15:38,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 635 [2018-10-24 14:15:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:38,831 INFO L225 Difference]: With dead ends: 480261 [2018-10-24 14:15:38,831 INFO L226 Difference]: Without dead ends: 257480 [2018-10-24 14:15:38,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:15:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257480 states. Received shutdown request... [2018-10-24 14:15:39,935 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:15:39,939 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:15:39,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:15:39 BoogieIcfgContainer [2018-10-24 14:15:39,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:15:39,940 INFO L168 Benchmark]: Toolchain (without parser) took 229214.94 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:15:39,941 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:15:39,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2670.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:39,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 834.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.5 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:39,944 INFO L168 Benchmark]: Boogie Preprocessor took 523.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:39,944 INFO L168 Benchmark]: RCFGBuilder took 15266.57 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 245.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 16.7 MB). Peak memory consumption was 604.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:39,945 INFO L168 Benchmark]: TraceAbstraction took 209912.56 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 14:15:39,951 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2670.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 834.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.5 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 523.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15266.57 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 245.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 16.7 MB). Peak memory consumption was 604.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209912.56 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 209.8s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 174.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9076 SDtfs, 25808 SDslu, 3331 SDs, 0 SdLazy, 55086 SolverSat, 15880 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 135.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 130 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248124occurred 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: 26.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 98380 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 3887 NumberOfCodeBlocks, 3887 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3875 ConstructedInterpolants, 0 QuantifiedInterpolants, 3362504 SizeOfPredicates, 1 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 4019/4031 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown