java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:03:34,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:03:34,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:03:34,191 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:03:34,192 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:03:34,193 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:03:34,194 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:03:34,196 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:03:34,198 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:03:34,199 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:03:34,200 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:03:34,200 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:03:34,201 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:03:34,202 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:03:34,203 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:03:34,204 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:03:34,205 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:03:34,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:03:34,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:03:34,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:03:34,220 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:03:34,221 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:03:34,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 21:03:34,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 21:03:34,227 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 21:03:34,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 21:03:34,231 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 21:03:34,232 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 21:03:34,233 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 21:03:34,234 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 21:03:34,236 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 21:03:34,237 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 21:03:34,242 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 [2018-10-23 21:03:34,271 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:03:34,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:03:34,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:03:34,274 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 21:03:34,275 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 21:03:34,275 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 21:03:34,275 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 21:03:34,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:03:34,276 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:03:34,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:03:34,276 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:03:34,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:03:34,277 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:03:34,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:03:34,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:03:34,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:03:34,278 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:03:34,279 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:03:34,279 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:03:34,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:03:34,280 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:03:34,280 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:03:34,280 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:03:34,281 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 21:03:34,281 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:03:34,281 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:03:34,281 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:03:34,281 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:03:34,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:03:34,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:03:34,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:03:34,367 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:03:34,367 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:03:34,368 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-10-23 21:03:34,441 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f4a42ecc/df6c29eaf68645aeac9e4489ac032dc7/FLAG467383e0e [2018-10-23 21:03:35,335 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:03:35,336 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-10-23 21:03:35,382 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f4a42ecc/df6c29eaf68645aeac9e4489ac032dc7/FLAG467383e0e [2018-10-23 21:03:35,398 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f4a42ecc/df6c29eaf68645aeac9e4489ac032dc7 [2018-10-23 21:03:35,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:03:35,412 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:03:35,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:03:35,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:03:35,417 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:03:35,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:03:35" (1/1) ... [2018-10-23 21:03:35,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a99fc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:35, skipping insertion in model container [2018-10-23 21:03:35,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:03:35" (1/1) ... [2018-10-23 21:03:35,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:03:35,674 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:03:37,708 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:03:37,713 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:03:38,939 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:03:39,001 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:03:39,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39 WrapperNode [2018-10-23 21:03:39,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:03:39,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:03:39,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:03:39,003 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:03:39,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:39,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:03:40,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:03:40,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:03:40,093 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:03:40,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... [2018-10-23 21:03:40,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:03:40,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:03:40,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:03:40,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:03:40,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:03:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 21:03:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:03:40,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:03:58,601 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:03:58,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:03:58 BoogieIcfgContainer [2018-10-23 21:03:58,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:03:58,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:03:58,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:03:58,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:03:58,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:03:35" (1/3) ... [2018-10-23 21:03:58,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491e8df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:03:58, skipping insertion in model container [2018-10-23 21:03:58,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:39" (2/3) ... [2018-10-23 21:03:58,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491e8df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:03:58, skipping insertion in model container [2018-10-23 21:03:58,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:03:58" (3/3) ... [2018-10-23 21:03:58,611 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label37_true-unreach-call.c [2018-10-23 21:03:58,621 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:03:58,633 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:03:58,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:03:58,703 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 21:03:58,704 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:03:58,704 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:03:58,704 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:03:58,704 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:03:58,704 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:03:58,704 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:03:58,705 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:03:58,705 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:03:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 21:03:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-23 21:03:58,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:58,774 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:03:58,780 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:58,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:58,788 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-10-23 21:03:58,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:58,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:58,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:58,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:58,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:03:59,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:03:59,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:03:59,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:03:59,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:03:59,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:03:59,298 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 21:04:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:04:27,051 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-23 21:04:27,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:04:27,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-23 21:04:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:04:27,110 INFO L225 Difference]: With dead ends: 6326 [2018-10-23 21:04:27,110 INFO L226 Difference]: Without dead ends: 4570 [2018-10-23 21:04:27,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:04:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-23 21:04:27,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-23 21:04:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-23 21:04:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-23 21:04:27,329 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 39 [2018-10-23 21:04:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:04:27,329 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-23 21:04:27,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:04:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-23 21:04:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-23 21:04:27,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:04:27,340 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:04:27,340 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:04:27,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:04:27,342 INFO L82 PathProgramCache]: Analyzing trace with hash 135360988, now seen corresponding path program 1 times [2018-10-23 21:04:27,342 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:04:27,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:04:27,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:27,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:04:27,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:04:27,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:04:27,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:04:27,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:04:27,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:04:27,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:04:27,718 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-23 21:04:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:04:56,690 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-23 21:04:56,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:04:56,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-10-23 21:04:56,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:04:56,763 INFO L225 Difference]: With dead ends: 17552 [2018-10-23 21:04:56,763 INFO L226 Difference]: Without dead ends: 12990 [2018-10-23 21:04:56,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:04:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-23 21:04:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-23 21:04:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-23 21:04:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-23 21:04:56,975 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 143 [2018-10-23 21:04:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:04:56,976 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-23 21:04:56,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:04:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-23 21:04:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-23 21:04:56,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:04:56,980 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:04:56,980 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:04:56,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:04:56,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1896301798, now seen corresponding path program 1 times [2018-10-23 21:04:56,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:04:56,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:04:56,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:56,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:04:56,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:04:57,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:04:57,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:04:57,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:04:57,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:04:57,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:04:57,258 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-23 21:05:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:05:18,966 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-10-23 21:05:18,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:05:18,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-10-23 21:05:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:05:19,043 INFO L225 Difference]: With dead ends: 33844 [2018-10-23 21:05:19,044 INFO L226 Difference]: Without dead ends: 25180 [2018-10-23 21:05:19,057 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 [2018-10-23 21:05:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-10-23 21:05:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-10-23 21:05:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-10-23 21:05:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-10-23 21:05:19,419 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 147 [2018-10-23 21:05:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:05:19,420 INFO L481 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-10-23 21:05:19,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:05:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-10-23 21:05:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-23 21:05:19,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:05:19,423 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:05:19,423 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:05:19,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:05:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1277374214, now seen corresponding path program 1 times [2018-10-23 21:05:19,424 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:05:19,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:05:19,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:19,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:19,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-23 21:05:19,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:05:19,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:05:19,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:05:19,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:05:19,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:05:19,796 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-10-23 21:05:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:05:39,463 INFO L93 Difference]: Finished difference Result 98404 states and 140796 transitions. [2018-10-23 21:05:39,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:05:39,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-10-23 21:05:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:05:39,584 INFO L225 Difference]: With dead ends: 98404 [2018-10-23 21:05:39,585 INFO L226 Difference]: Without dead ends: 73264 [2018-10-23 21:05:39,630 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 [2018-10-23 21:05:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73264 states. [2018-10-23 21:05:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73264 to 73244. [2018-10-23 21:05:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73244 states. [2018-10-23 21:05:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73244 states to 73244 states and 91793 transitions. [2018-10-23 21:05:40,563 INFO L78 Accepts]: Start accepts. Automaton has 73244 states and 91793 transitions. Word has length 205 [2018-10-23 21:05:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:05:40,564 INFO L481 AbstractCegarLoop]: Abstraction has 73244 states and 91793 transitions. [2018-10-23 21:05:40,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:05:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 73244 states and 91793 transitions. [2018-10-23 21:05:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-23 21:05:40,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:05:40,584 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:05:40,584 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:05:40,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:05:40,584 INFO L82 PathProgramCache]: Analyzing trace with hash -189251644, now seen corresponding path program 1 times [2018-10-23 21:05:40,584 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:05:40,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:05:40,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:40,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:40,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:41,205 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:05:41,728 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 21:05:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-23 21:05:42,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:05:42,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:05:42,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:05:42,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:05:42,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:05:42,757 INFO L87 Difference]: Start difference. First operand 73244 states and 91793 transitions. Second operand 7 states. [2018-10-23 21:06:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:06:20,034 INFO L93 Difference]: Finished difference Result 172454 states and 210825 transitions. [2018-10-23 21:06:20,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:06:20,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 631 [2018-10-23 21:06:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:06:20,180 INFO L225 Difference]: With dead ends: 172454 [2018-10-23 21:06:20,181 INFO L226 Difference]: Without dead ends: 99212 [2018-10-23 21:06:20,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 21:06:20,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99212 states. [2018-10-23 21:06:21,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99212 to 95108. [2018-10-23 21:06:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95108 states. [2018-10-23 21:06:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95108 states to 95108 states and 114314 transitions. [2018-10-23 21:06:21,329 INFO L78 Accepts]: Start accepts. Automaton has 95108 states and 114314 transitions. Word has length 631 [2018-10-23 21:06:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:06:21,330 INFO L481 AbstractCegarLoop]: Abstraction has 95108 states and 114314 transitions. [2018-10-23 21:06:21,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:06:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 95108 states and 114314 transitions. [2018-10-23 21:06:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2018-10-23 21:06:21,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:06:21,358 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:06:21,358 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:06:21,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:06:21,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1193304938, now seen corresponding path program 1 times [2018-10-23 21:06:21,359 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:06:21,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:06:21,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:21,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:06:21,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:06:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-23 21:06:22,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:06:22,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:06:22,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:06:22,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:06:22,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:22,469 INFO L87 Difference]: Start difference. First operand 95108 states and 114314 transitions. Second operand 4 states. [2018-10-23 21:06:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:06:42,702 INFO L93 Difference]: Finished difference Result 239402 states and 292900 transitions. [2018-10-23 21:06:42,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:06:42,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 659 [2018-10-23 21:06:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:06:42,898 INFO L225 Difference]: With dead ends: 239402 [2018-10-23 21:06:42,898 INFO L226 Difference]: Without dead ends: 144296 [2018-10-23 21:06:42,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:43,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144296 states. [2018-10-23 21:06:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144296 to 142919. [2018-10-23 21:06:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142919 states. [2018-10-23 21:06:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142919 states to 142919 states and 167348 transitions. [2018-10-23 21:06:44,449 INFO L78 Accepts]: Start accepts. Automaton has 142919 states and 167348 transitions. Word has length 659 [2018-10-23 21:06:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:06:44,450 INFO L481 AbstractCegarLoop]: Abstraction has 142919 states and 167348 transitions. [2018-10-23 21:06:44,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:06:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 142919 states and 167348 transitions. [2018-10-23 21:06:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2018-10-23 21:06:44,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:06:44,487 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:06:44,487 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:06:44,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:06:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1629305439, now seen corresponding path program 1 times [2018-10-23 21:06:44,488 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:06:44,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:06:44,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:44,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:06:44,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:06:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:06:46,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:06:46,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:06:46,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:06:46,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:06:46,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:46,166 INFO L87 Difference]: Start difference. First operand 142919 states and 167348 transitions. Second operand 4 states. [2018-10-23 21:07:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:07:03,358 INFO L93 Difference]: Finished difference Result 285839 states and 334703 transitions. [2018-10-23 21:07:03,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:07:03,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 894 [2018-10-23 21:07:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:07:03,548 INFO L225 Difference]: With dead ends: 285839 [2018-10-23 21:07:03,548 INFO L226 Difference]: Without dead ends: 142922 [2018-10-23 21:07:03,612 INFO L605 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 [2018-10-23 21:07:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142922 states. [2018-10-23 21:07:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142922 to 131983. [2018-10-23 21:07:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131983 states. [2018-10-23 21:07:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131983 states to 131983 states and 147276 transitions. [2018-10-23 21:07:04,833 INFO L78 Accepts]: Start accepts. Automaton has 131983 states and 147276 transitions. Word has length 894 [2018-10-23 21:07:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:07:04,834 INFO L481 AbstractCegarLoop]: Abstraction has 131983 states and 147276 transitions. [2018-10-23 21:07:04,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:07:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 131983 states and 147276 transitions. [2018-10-23 21:07:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2018-10-23 21:07:04,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:07:04,857 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:07:04,858 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:07:04,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:07:04,858 INFO L82 PathProgramCache]: Analyzing trace with hash 281291200, now seen corresponding path program 1 times [2018-10-23 21:07:04,858 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:07:04,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:07:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:04,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:07:04,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:07:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-23 21:07:06,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:07:06,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:07:06,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:07:06,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:07:06,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:06,789 INFO L87 Difference]: Start difference. First operand 131983 states and 147276 transitions. Second operand 4 states. [2018-10-23 21:07:29,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:07:29,229 INFO L93 Difference]: Finished difference Result 455390 states and 509142 transitions. [2018-10-23 21:07:29,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:07:29,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1026 [2018-10-23 21:07:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:07:29,585 INFO L225 Difference]: With dead ends: 455390 [2018-10-23 21:07:29,585 INFO L226 Difference]: Without dead ends: 323409 [2018-10-23 21:07:29,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323409 states. [2018-10-23 21:07:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323409 to 319142. [2018-10-23 21:07:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319142 states. [2018-10-23 21:07:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319142 states to 319142 states and 348811 transitions. [2018-10-23 21:07:33,244 INFO L78 Accepts]: Start accepts. Automaton has 319142 states and 348811 transitions. Word has length 1026 [2018-10-23 21:07:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:07:33,246 INFO L481 AbstractCegarLoop]: Abstraction has 319142 states and 348811 transitions. [2018-10-23 21:07:33,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:07:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 319142 states and 348811 transitions. [2018-10-23 21:07:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2018-10-23 21:07:33,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:07:33,272 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:07:33,273 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:07:33,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:07:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1586621396, now seen corresponding path program 1 times [2018-10-23 21:07:33,274 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:07:33,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:07:33,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:33,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:07:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-23 21:07:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:07:35,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:07:35,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:07:35,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:07:35,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:07:35,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:35,924 INFO L87 Difference]: Start difference. First operand 319142 states and 348811 transitions. Second operand 4 states. [2018-10-23 21:07:35,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 21:07:35,925 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:07:35,931 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:07:35,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:07:35 BoogieIcfgContainer [2018-10-23 21:07:35,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:07:35,933 INFO L168 Benchmark]: Toolchain (without parser) took 240522.08 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 124.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 21:07:35,934 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:07:35,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3589.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:07:35,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 1089.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:07:35,936 INFO L168 Benchmark]: Boogie Preprocessor took 774.28 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 91.9 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. [2018-10-23 21:07:35,937 INFO L168 Benchmark]: RCFGBuilder took 17735.14 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.2 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -380.8 MB). Peak memory consumption was 822.4 MB. Max. memory is 7.1 GB. [2018-10-23 21:07:35,938 INFO L168 Benchmark]: TraceAbstraction took 217328.69 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 21:07:35,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 3589.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1089.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 774.28 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 91.9 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17735.14 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 295.2 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -380.8 MB). Peak memory consumption was 822.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217328.69 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (319142states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 217.2s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 196.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9823 SDtfs, 32399 SDslu, 3572 SDs, 0 SdLazy, 82204 SolverSat, 18651 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 167.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319142occurred 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: 9.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 25075 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 4823 NumberOfCodeBlocks, 4823 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4814 ConstructedInterpolants, 0 QuantifiedInterpolants, 7197376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 3634/3634 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown