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_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:57:59,440 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:57:59,442 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:57:59,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:57:59,456 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:57:59,457 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:57:59,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:57:59,461 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:57:59,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:57:59,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:57:59,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:57:59,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:57:59,466 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:57:59,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:57:59,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:57:59,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:57:59,470 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:57:59,472 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:57:59,474 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:57:59,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:57:59,480 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:57:59,481 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:57:59,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:57:59,486 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:57:59,486 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:57:59,487 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:57:59,489 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:57:59,490 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:57:59,492 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:57:59,496 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:57:59,497 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:57:59,497 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:57:59,502 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 20:57:59,520 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:57:59,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:57:59,521 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:57:59,521 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:57:59,521 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:57:59,522 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:57:59,522 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:57:59,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:57:59,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:57:59,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:57:59,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:57:59,523 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:57:59,523 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:57:59,523 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:57:59,523 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:57:59,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:57:59,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:57:59,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:57:59,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:57:59,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:57:59,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:57:59,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:57:59,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:57:59,525 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:57:59,525 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:57:59,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:57:59,526 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:57:59,526 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:57:59,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:57:59,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:57:59,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:57:59,602 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:57:59,602 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:57:59,603 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-10-23 20:57:59,664 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6ed07128/721fe4593be34e03a6d13120bf1d5233/FLAG17df89671 [2018-10-23 20:58:00,552 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:58:00,552 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-10-23 20:58:00,596 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6ed07128/721fe4593be34e03a6d13120bf1d5233/FLAG17df89671 [2018-10-23 20:58:00,612 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6ed07128/721fe4593be34e03a6d13120bf1d5233 [2018-10-23 20:58:00,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:58:00,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:58:00,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:00,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:58:00,632 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:58:00,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:00" (1/1) ... [2018-10-23 20:58:00,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a79b8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:00, skipping insertion in model container [2018-10-23 20:58:00,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:00" (1/1) ... [2018-10-23 20:58:00,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:58:00,909 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:58:02,885 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:02,890 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:58:04,136 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:04,199 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:58:04,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04 WrapperNode [2018-10-23 20:58:04,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:04,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:04,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:58:04,201 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:58:04,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:04,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:05,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:58:05,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:58:05,251 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:58:05,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (1/1) ... [2018-10-23 20:58:05,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:58:05,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:58:05,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:58:05,884 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:58:05,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (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 20:58:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:58:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:58:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:58:23,834 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:58:23,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:23 BoogieIcfgContainer [2018-10-23 20:58:23,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:58:23,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:58:23,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:58:23,841 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:58:23,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:58:00" (1/3) ... [2018-10-23 20:58:23,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27275713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:23, skipping insertion in model container [2018-10-23 20:58:23,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:04" (2/3) ... [2018-10-23 20:58:23,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27275713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:23, skipping insertion in model container [2018-10-23 20:58:23,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:23" (3/3) ... [2018-10-23 20:58:23,846 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label00_true-unreach-call.c [2018-10-23 20:58:23,856 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:58:23,867 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:58:23,885 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:58:23,935 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:58:23,936 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:58:23,937 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:58:23,937 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:58:23,937 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:58:23,937 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:58:23,937 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:58:23,937 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:58:23,938 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:58:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 20:58:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-23 20:58:24,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:58:24,004 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:58:24,007 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:58:24,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:58:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-10-23 20:58:24,016 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:58:24,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:58:24,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:24,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:58:24,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:58:24,834 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 20:58:24,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:58:24,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:58:24,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:58:24,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:58:24,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:58:24,865 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 20:58:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:58:46,933 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-23 20:58:46,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:58:46,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-23 20:58:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:58:46,991 INFO L225 Difference]: With dead ends: 6324 [2018-10-23 20:58:46,992 INFO L226 Difference]: Without dead ends: 4568 [2018-10-23 20:58:47,002 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 20:58:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-23 20:58:47,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-23 20:58:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-23 20:58:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-23 20:58:47,224 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 41 [2018-10-23 20:58:47,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:58:47,225 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-23 20:58:47,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:58:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-23 20:58:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 20:58:47,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:58:47,232 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:47,232 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:58:47,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:58:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash 215777173, now seen corresponding path program 1 times [2018-10-23 20:58:47,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:58:47,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:58:47,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:47,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:58:47,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:58:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:58:47,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:58:47,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:58:47,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:58:47,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:58:47,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:58:47,580 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-23 20:59:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:14,788 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-23 20:59:14,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:14,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-23 20:59:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:14,857 INFO L225 Difference]: With dead ends: 17544 [2018-10-23 20:59:14,857 INFO L226 Difference]: Without dead ends: 12983 [2018-10-23 20:59:14,866 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 20:59:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-23 20:59:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12980. [2018-10-23 20:59:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12980 states. [2018-10-23 20:59:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12980 states to 12980 states and 20479 transitions. [2018-10-23 20:59:15,134 INFO L78 Accepts]: Start accepts. Automaton has 12980 states and 20479 transitions. Word has length 119 [2018-10-23 20:59:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:15,135 INFO L481 AbstractCegarLoop]: Abstraction has 12980 states and 20479 transitions. [2018-10-23 20:59:15,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12980 states and 20479 transitions. [2018-10-23 20:59:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 20:59:15,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:15,139 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:15,139 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:15,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:15,140 INFO L82 PathProgramCache]: Analyzing trace with hash -378716299, now seen corresponding path program 1 times [2018-10-23 20:59:15,140 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:15,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:15,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:15,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:15,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:59:15,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:15,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:59:15,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:59:15,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:59:15,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:15,552 INFO L87 Difference]: Start difference. First operand 12980 states and 20479 transitions. Second operand 4 states. [2018-10-23 20:59:38,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:38,536 INFO L93 Difference]: Finished difference Result 50899 states and 80619 transitions. [2018-10-23 20:59:38,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:38,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-23 20:59:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:38,635 INFO L225 Difference]: With dead ends: 50899 [2018-10-23 20:59:38,636 INFO L226 Difference]: Without dead ends: 37921 [2018-10-23 20:59:38,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37921 states. [2018-10-23 20:59:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37921 to 37908. [2018-10-23 20:59:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37908 states. [2018-10-23 20:59:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37908 states to 37908 states and 50827 transitions. [2018-10-23 20:59:39,187 INFO L78 Accepts]: Start accepts. Automaton has 37908 states and 50827 transitions. Word has length 139 [2018-10-23 20:59:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:39,188 INFO L481 AbstractCegarLoop]: Abstraction has 37908 states and 50827 transitions. [2018-10-23 20:59:39,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 37908 states and 50827 transitions. [2018-10-23 20:59:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-23 20:59:39,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:39,199 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:39,200 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:39,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:39,200 INFO L82 PathProgramCache]: Analyzing trace with hash 15763358, now seen corresponding path program 1 times [2018-10-23 20:59:39,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:39,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:39,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:39,536 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 20:59:40,063 WARN L179 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 20:59:40,571 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 20:59:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:59:40,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:40,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:59:40,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:59:40,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:59:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:59:40,642 INFO L87 Difference]: Start difference. First operand 37908 states and 50827 transitions. Second operand 6 states. [2018-10-23 21:00:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:08,913 INFO L93 Difference]: Finished difference Result 125117 states and 164448 transitions. [2018-10-23 21:00:08,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:00:08,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-23 21:00:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:09,033 INFO L225 Difference]: With dead ends: 125117 [2018-10-23 21:00:09,034 INFO L226 Difference]: Without dead ends: 87211 [2018-10-23 21:00:09,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:00:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87211 states. [2018-10-23 21:00:09,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87211 to 85740. [2018-10-23 21:00:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85740 states. [2018-10-23 21:00:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85740 states to 85740 states and 110313 transitions. [2018-10-23 21:00:09,999 INFO L78 Accepts]: Start accepts. Automaton has 85740 states and 110313 transitions. Word has length 146 [2018-10-23 21:00:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:09,999 INFO L481 AbstractCegarLoop]: Abstraction has 85740 states and 110313 transitions. [2018-10-23 21:00:09,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:00:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 85740 states and 110313 transitions. [2018-10-23 21:00:10,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-23 21:00:10,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:10,003 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:10,004 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:10,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:10,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1493354488, now seen corresponding path program 1 times [2018-10-23 21:00:10,004 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:10,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:10,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:10,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:10,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:00:10,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:10,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:00:10,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:10,400 INFO L87 Difference]: Start difference. First operand 85740 states and 110313 transitions. Second operand 4 states. [2018-10-23 21:00:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:27,842 INFO L93 Difference]: Finished difference Result 215378 states and 276266 transitions. [2018-10-23 21:00:27,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:27,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 277 [2018-10-23 21:00:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:27,980 INFO L225 Difference]: With dead ends: 215378 [2018-10-23 21:00:27,981 INFO L226 Difference]: Without dead ends: 118708 [2018-10-23 21:00:28,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118708 states. [2018-10-23 21:00:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118708 to 118544. [2018-10-23 21:00:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118544 states. [2018-10-23 21:00:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118544 states to 118544 states and 145183 transitions. [2018-10-23 21:00:29,745 INFO L78 Accepts]: Start accepts. Automaton has 118544 states and 145183 transitions. Word has length 277 [2018-10-23 21:00:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:29,745 INFO L481 AbstractCegarLoop]: Abstraction has 118544 states and 145183 transitions. [2018-10-23 21:00:29,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:00:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 118544 states and 145183 transitions. [2018-10-23 21:00:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-10-23 21:00:29,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:29,763 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:29,763 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:29,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:29,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1821230627, now seen corresponding path program 1 times [2018-10-23 21:00:29,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:29,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:29,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:29,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:29,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-23 21:00:30,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:30,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:00:30,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:30,402 INFO L87 Difference]: Start difference. First operand 118544 states and 145183 transitions. Second operand 4 states. [2018-10-23 21:00:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:45,242 INFO L93 Difference]: Finished difference Result 235722 states and 288992 transitions. [2018-10-23 21:00:45,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:45,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 585 [2018-10-23 21:00:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:45,378 INFO L225 Difference]: With dead ends: 235722 [2018-10-23 21:00:45,378 INFO L226 Difference]: Without dead ends: 118546 [2018-10-23 21:00:45,445 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 21:00:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118546 states. [2018-10-23 21:00:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118546 to 114412. [2018-10-23 21:00:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114412 states. [2018-10-23 21:00:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114412 states to 114412 states and 127873 transitions. [2018-10-23 21:00:46,344 INFO L78 Accepts]: Start accepts. Automaton has 114412 states and 127873 transitions. Word has length 585 [2018-10-23 21:00:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:46,345 INFO L481 AbstractCegarLoop]: Abstraction has 114412 states and 127873 transitions. [2018-10-23 21:00:46,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:00:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 114412 states and 127873 transitions. [2018-10-23 21:00:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-10-23 21:00:46,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:46,360 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 21:00:46,360 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:46,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:46,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1730665567, now seen corresponding path program 1 times [2018-10-23 21:00:46,360 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:46,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:46,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:46,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:46,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:47,450 WARN L179 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-23 21:00:47,750 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-23 21:00:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 401 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-23 21:00:49,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:00:49,377 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 [2018-10-23 21:00:49,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:49,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:00:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-23 21:00:50,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:00:50,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 21:00:50,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:00:50,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:00:50,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:00:50,035 INFO L87 Difference]: Start difference. First operand 114412 states and 127873 transitions. Second operand 5 states. [2018-10-23 21:01:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:10,162 INFO L93 Difference]: Finished difference Result 254812 states and 283736 transitions. [2018-10-23 21:01:10,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:01:10,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 592 [2018-10-23 21:01:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:11,337 INFO L225 Difference]: With dead ends: 254812 [2018-10-23 21:01:11,337 INFO L226 Difference]: Without dead ends: 132162 [2018-10-23 21:01:11,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 592 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:01:11,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132162 states. [2018-10-23 21:01:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132162 to 86807. [2018-10-23 21:01:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86807 states. [2018-10-23 21:01:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86807 states to 86807 states and 92932 transitions. [2018-10-23 21:01:12,799 INFO L78 Accepts]: Start accepts. Automaton has 86807 states and 92932 transitions. Word has length 592 [2018-10-23 21:01:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:12,800 INFO L481 AbstractCegarLoop]: Abstraction has 86807 states and 92932 transitions. [2018-10-23 21:01:12,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:01:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 86807 states and 92932 transitions. [2018-10-23 21:01:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2018-10-23 21:01:12,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:12,811 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:12,812 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:12,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash -4044790, now seen corresponding path program 1 times [2018-10-23 21:01:12,812 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:12,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:12,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:12,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:12,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-23 21:01:15,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:01:15,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 21:01:15,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:15,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:01:16,115 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-10-23 21:01:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-23 21:01:17,807 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 21:01:17,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 21:01:17,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:01:17,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:01:17,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:01:17,809 INFO L87 Difference]: Start difference. First operand 86807 states and 92932 transitions. Second operand 7 states. [2018-10-23 21:01:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:47,716 INFO L93 Difference]: Finished difference Result 310788 states and 332259 transitions. [2018-10-23 21:01:47,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:01:47,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 837 [2018-10-23 21:01:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:47,992 INFO L225 Difference]: With dead ends: 310788 [2018-10-23 21:01:47,993 INFO L226 Difference]: Without dead ends: 225349 [2018-10-23 21:01:48,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:01:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225349 states. [2018-10-23 21:01:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225349 to 150035. [2018-10-23 21:01:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150035 states. [2018-10-23 21:01:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150035 states to 150035 states and 159133 transitions. [2018-10-23 21:01:49,999 INFO L78 Accepts]: Start accepts. Automaton has 150035 states and 159133 transitions. Word has length 837 [2018-10-23 21:01:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:50,000 INFO L481 AbstractCegarLoop]: Abstraction has 150035 states and 159133 transitions. [2018-10-23 21:01:50,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:01:50,000 INFO L276 IsEmpty]: Start isEmpty. Operand 150035 states and 159133 transitions. [2018-10-23 21:01:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1343 [2018-10-23 21:01:50,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:50,059 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:50,060 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:50,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:50,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1844136082, now seen corresponding path program 1 times [2018-10-23 21:01:50,060 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:50,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:50,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:50,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:50,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2069 backedges. 1484 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2018-10-23 21:01:52,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:52,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:01:52,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:01:52,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:01:52,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:01:52,056 INFO L87 Difference]: Start difference. First operand 150035 states and 159133 transitions. Second operand 3 states. Received shutdown request... [2018-10-23 21:01:55,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:01:55,140 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:01:55,145 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:01:55,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:01:55 BoogieIcfgContainer [2018-10-23 21:01:55,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:01:55,147 INFO L168 Benchmark]: Toolchain (without parser) took 234522.69 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.6 GB). Peak memory consumption was 353.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:55,148 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 21:01:55,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3573.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 987.2 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:55,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 1050.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 849.3 MB). Free memory was 987.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:55,156 INFO L168 Benchmark]: Boogie Preprocessor took 632.04 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:55,158 INFO L168 Benchmark]: RCFGBuilder took 17953.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 261.1 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 512.2 MB). Peak memory consumption was 773.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:55,159 INFO L168 Benchmark]: TraceAbstraction took 211308.00 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: -2.4 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:01:55,167 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 3573.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 987.2 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1050.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 849.3 MB). Free memory was 987.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 632.04 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17953.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 261.1 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 512.2 MB). Peak memory consumption was 773.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211308.00 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: -2.4 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 136). Cancelled while BasicCegarLoop was constructing difference of abstraction (150035states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (186 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 211.2s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 188.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11971 SDtfs, 42849 SDslu, 4002 SDs, 0 SdLazy, 76785 SolverSat, 19300 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 156.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1473 GetRequests, 1438 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150035occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 126459 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 5507 NumberOfCodeBlocks, 5507 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 5496 ConstructedInterpolants, 39 QuantifiedInterpolants, 18088554 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1660 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 4578/4814 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown