java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:24:03,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:24:03,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:24:03,386 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:24:03,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:24:03,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:24:03,388 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:24:03,390 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:24:03,393 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:24:03,394 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:24:03,394 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:24:03,397 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:24:03,398 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:24:03,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:24:03,407 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:24:03,407 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:24:03,408 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:24:03,410 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:24:03,415 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:24:03,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:24:03,420 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:24:03,421 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:24:03,423 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:24:03,435 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 [2018-10-26 21:24:03,460 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:24:03,461 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:24:03,462 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:24:03,462 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:24:03,462 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:24:03,463 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:24:03,463 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:24:03,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:24:03,463 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:24:03,463 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:24:03,464 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:24:03,464 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:24:03,464 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:24:03,464 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:24:03,464 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:24:03,465 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:24:03,465 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:24:03,465 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:24:03,465 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:24:03,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:24:03,465 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:24:03,466 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:24:03,466 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:24:03,466 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:24:03,466 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:24:03,466 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:24:03,467 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:24:03,467 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:24:03,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:24:03,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:24:03,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:24:03,536 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:24:03,536 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:24:03,537 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-26 21:24:03,598 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f36af9d37/0f6e42b06cdd4559a22d41c4daeffcd9/FLAG35c1aaada [2018-10-26 21:24:04,437 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:24:04,438 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-26 21:24:04,483 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f36af9d37/0f6e42b06cdd4559a22d41c4daeffcd9/FLAG35c1aaada [2018-10-26 21:24:04,504 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f36af9d37/0f6e42b06cdd4559a22d41c4daeffcd9 [2018-10-26 21:24:04,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:24:04,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:24:04,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:24:04,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:24:04,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:24:04,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:04" (1/1) ... [2018-10-26 21:24:04,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36832d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:04, skipping insertion in model container [2018-10-26 21:24:04,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:04" (1/1) ... [2018-10-26 21:24:04,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:24:04,745 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:24:06,293 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:24:06,301 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:24:07,001 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:24:07,037 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:24:07,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07 WrapperNode [2018-10-26 21:24:07,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:24:07,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:24:07,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:24:07,039 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:24:07,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:07,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:07,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:24:07,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:24:07,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:24:07,914 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:24:07,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:07,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:07,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:07,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:24:08,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:24:08,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:24:08,272 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:24:08,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (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 [2018-10-26 21:24:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:24:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:24:08,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:24:22,278 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:24:22,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:22 BoogieIcfgContainer [2018-10-26 21:24:22,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:24:22,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:24:22,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:24:22,284 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:24:22,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:24:04" (1/3) ... [2018-10-26 21:24:22,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14850fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:22, skipping insertion in model container [2018-10-26 21:24:22,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (2/3) ... [2018-10-26 21:24:22,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14850fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:22, skipping insertion in model container [2018-10-26 21:24:22,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:22" (3/3) ... [2018-10-26 21:24:22,288 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-10-26 21:24:22,297 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:24:22,306 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:24:22,324 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:24:22,369 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:24:22,370 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:24:22,370 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:24:22,370 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:24:22,370 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:24:22,370 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:24:22,370 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:24:22,370 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:24:22,371 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:24:22,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 21:24:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-26 21:24:22,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:22,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:24:22,428 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:22,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:22,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1059493314, now seen corresponding path program 1 times [2018-10-26 21:24:22,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:22,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:22,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:22,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:24:22,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:24:22,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:24:22,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:24:22,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:24:22,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:24:22,985 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 21:24:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:24:37,754 INFO L93 Difference]: Finished difference Result 3991 states and 7504 transitions. [2018-10-26 21:24:37,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:24:37,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-26 21:24:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:24:37,809 INFO L225 Difference]: With dead ends: 3991 [2018-10-26 21:24:37,809 INFO L226 Difference]: Without dead ends: 2885 [2018-10-26 21:24:37,821 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 [2018-10-26 21:24:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2018-10-26 21:24:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1946. [2018-10-26 21:24:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2018-10-26 21:24:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 3412 transitions. [2018-10-26 21:24:37,986 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 3412 transitions. Word has length 61 [2018-10-26 21:24:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:24:37,987 INFO L481 AbstractCegarLoop]: Abstraction has 1946 states and 3412 transitions. [2018-10-26 21:24:37,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:24:37,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 3412 transitions. [2018-10-26 21:24:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-26 21:24:37,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:37,998 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, 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] [2018-10-26 21:24:37,998 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:37,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:38,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1442154721, now seen corresponding path program 1 times [2018-10-26 21:24:38,001 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:38,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:38,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:38,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:38,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:24:38,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:24:38,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:24:38,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:24:38,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:24:38,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:24:38,226 INFO L87 Difference]: Start difference. First operand 1946 states and 3412 transitions. Second operand 4 states. [2018-10-26 21:24:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:24:57,350 INFO L93 Difference]: Finished difference Result 7107 states and 12745 transitions. [2018-10-26 21:24:57,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:24:57,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2018-10-26 21:24:57,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:24:57,380 INFO L225 Difference]: With dead ends: 7107 [2018-10-26 21:24:57,380 INFO L226 Difference]: Without dead ends: 5163 [2018-10-26 21:24:57,385 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 [2018-10-26 21:24:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2018-10-26 21:24:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 5141. [2018-10-26 21:24:57,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5141 states. [2018-10-26 21:24:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 8063 transitions. [2018-10-26 21:24:57,490 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 8063 transitions. Word has length 128 [2018-10-26 21:24:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:24:57,491 INFO L481 AbstractCegarLoop]: Abstraction has 5141 states and 8063 transitions. [2018-10-26 21:24:57,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:24:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 8063 transitions. [2018-10-26 21:24:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-26 21:24:57,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:57,496 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, 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] [2018-10-26 21:24:57,496 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:57,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:57,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1645796799, now seen corresponding path program 1 times [2018-10-26 21:24:57,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:57,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:57,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:57,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:57,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:58,311 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:24:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-26 21:24:58,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:24:58,422 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 [2018-10-26 21:24:58,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:58,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:24:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:24:58,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:24:58,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 21:24:58,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:24:58,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:24:58,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:24:58,850 INFO L87 Difference]: Start difference. First operand 5141 states and 8063 transitions. Second operand 6 states. [2018-10-26 21:25:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:19,228 INFO L93 Difference]: Finished difference Result 26053 states and 40615 transitions. [2018-10-26 21:25:19,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:25:19,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-26 21:25:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:19,332 INFO L225 Difference]: With dead ends: 26053 [2018-10-26 21:25:19,333 INFO L226 Difference]: Without dead ends: 20914 [2018-10-26 21:25:19,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:25:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20914 states. [2018-10-26 21:25:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20914 to 20913. [2018-10-26 21:25:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20913 states. [2018-10-26 21:25:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20913 states to 20913 states and 28528 transitions. [2018-10-26 21:25:19,771 INFO L78 Accepts]: Start accepts. Automaton has 20913 states and 28528 transitions. Word has length 158 [2018-10-26 21:25:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:19,772 INFO L481 AbstractCegarLoop]: Abstraction has 20913 states and 28528 transitions. [2018-10-26 21:25:19,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:25:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 20913 states and 28528 transitions. [2018-10-26 21:25:19,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-26 21:25:19,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:19,784 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:19,784 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:19,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:19,785 INFO L82 PathProgramCache]: Analyzing trace with hash -571397369, now seen corresponding path program 1 times [2018-10-26 21:25:19,785 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:19,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:19,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:19,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:19,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 117 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-26 21:25:20,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:25:20,268 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 [2018-10-26 21:25:20,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:20,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:25:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:25:20,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:25:20,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:25:20,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:20,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:20,633 INFO L87 Difference]: Start difference. First operand 20913 states and 28528 transitions. Second operand 4 states. [2018-10-26 21:25:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:32,826 INFO L93 Difference]: Finished difference Result 71020 states and 97374 transitions. [2018-10-26 21:25:32,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:32,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-10-26 21:25:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:32,937 INFO L225 Difference]: With dead ends: 71020 [2018-10-26 21:25:32,937 INFO L226 Difference]: Without dead ends: 50897 [2018-10-26 21:25:32,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50897 states. [2018-10-26 21:25:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50897 to 39823. [2018-10-26 21:25:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39823 states. [2018-10-26 21:25:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39823 states to 39823 states and 50523 transitions. [2018-10-26 21:25:34,013 INFO L78 Accepts]: Start accepts. Automaton has 39823 states and 50523 transitions. Word has length 267 [2018-10-26 21:25:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:34,014 INFO L481 AbstractCegarLoop]: Abstraction has 39823 states and 50523 transitions. [2018-10-26 21:25:34,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 39823 states and 50523 transitions. [2018-10-26 21:25:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-26 21:25:34,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:34,024 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:34,025 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:34,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:34,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2043076177, now seen corresponding path program 1 times [2018-10-26 21:25:34,025 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:34,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:34,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:34,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:34,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-26 21:25:34,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:34,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:25:34,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:25:34,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:25:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:25:34,346 INFO L87 Difference]: Start difference. First operand 39823 states and 50523 transitions. Second operand 3 states. [2018-10-26 21:25:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:40,773 INFO L93 Difference]: Finished difference Result 114312 states and 145741 transitions. [2018-10-26 21:25:40,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:25:40,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2018-10-26 21:25:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:40,938 INFO L225 Difference]: With dead ends: 114312 [2018-10-26 21:25:40,938 INFO L226 Difference]: Without dead ends: 75279 [2018-10-26 21:25:40,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:25:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75279 states. [2018-10-26 21:25:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75279 to 74490. [2018-10-26 21:25:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74490 states. [2018-10-26 21:25:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74490 states to 74490 states and 89291 transitions. [2018-10-26 21:25:42,484 INFO L78 Accepts]: Start accepts. Automaton has 74490 states and 89291 transitions. Word has length 293 [2018-10-26 21:25:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:42,485 INFO L481 AbstractCegarLoop]: Abstraction has 74490 states and 89291 transitions. [2018-10-26 21:25:42,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:25:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 74490 states and 89291 transitions. [2018-10-26 21:25:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-26 21:25:42,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:42,505 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-10-26 21:25:42,505 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:42,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:42,507 INFO L82 PathProgramCache]: Analyzing trace with hash -40954621, now seen corresponding path program 1 times [2018-10-26 21:25:42,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:42,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:42,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:42,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:42,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-26 21:25:42,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:42,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:25:42,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:42,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:42,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:42,995 INFO L87 Difference]: Start difference. First operand 74490 states and 89291 transitions. Second operand 4 states. [2018-10-26 21:25:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:55,366 INFO L93 Difference]: Finished difference Result 193140 states and 232971 transitions. [2018-10-26 21:25:55,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:55,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-10-26 21:25:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:55,534 INFO L225 Difference]: With dead ends: 193140 [2018-10-26 21:25:55,534 INFO L226 Difference]: Without dead ends: 119440 [2018-10-26 21:25:55,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119440 states. [2018-10-26 21:25:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119440 to 119405. [2018-10-26 21:25:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119405 states. [2018-10-26 21:25:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119405 states to 119405 states and 138598 transitions. [2018-10-26 21:25:57,506 INFO L78 Accepts]: Start accepts. Automaton has 119405 states and 138598 transitions. Word has length 396 [2018-10-26 21:25:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:57,507 INFO L481 AbstractCegarLoop]: Abstraction has 119405 states and 138598 transitions. [2018-10-26 21:25:57,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 119405 states and 138598 transitions. [2018-10-26 21:25:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-26 21:25:57,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:57,532 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:57,532 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:57,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:57,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2066761458, now seen corresponding path program 1 times [2018-10-26 21:25:57,533 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:57,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:57,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:57,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:57,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 608 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-26 21:25:57,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:57,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:25:57,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:25:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:25:57,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:25:57,890 INFO L87 Difference]: Start difference. First operand 119405 states and 138598 transitions. Second operand 5 states. [2018-10-26 21:26:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:25,300 INFO L93 Difference]: Finished difference Result 391988 states and 454896 transitions. [2018-10-26 21:26:25,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:26:25,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2018-10-26 21:26:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:25,678 INFO L225 Difference]: With dead ends: 391988 [2018-10-26 21:26:25,678 INFO L226 Difference]: Without dead ends: 273373 [2018-10-26 21:26:25,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273373 states. [2018-10-26 21:26:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273373 to 260561. [2018-10-26 21:26:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260561 states. [2018-10-26 21:26:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260561 states to 260561 states and 295633 transitions. [2018-10-26 21:26:29,521 INFO L78 Accepts]: Start accepts. Automaton has 260561 states and 295633 transitions. Word has length 477 [2018-10-26 21:26:29,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:29,521 INFO L481 AbstractCegarLoop]: Abstraction has 260561 states and 295633 transitions. [2018-10-26 21:26:29,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:26:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 260561 states and 295633 transitions. [2018-10-26 21:26:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-10-26 21:26:29,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:29,562 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:29,562 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:29,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1207682100, now seen corresponding path program 1 times [2018-10-26 21:26:29,563 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:29,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:29,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:29,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:29,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 21:26:30,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:30,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:26:30,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:26:30,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:26:30,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:30,253 INFO L87 Difference]: Start difference. First operand 260561 states and 295633 transitions. Second operand 4 states. [2018-10-26 21:26:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:44,206 INFO L93 Difference]: Finished difference Result 520352 states and 590508 transitions. [2018-10-26 21:26:44,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:26:44,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 566 [2018-10-26 21:26:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:44,539 INFO L225 Difference]: With dead ends: 520352 [2018-10-26 21:26:44,539 INFO L226 Difference]: Without dead ends: 260581 [2018-10-26 21:26:44,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:44,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260581 states. [2018-10-26 21:26:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260581 to 255043. [2018-10-26 21:26:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255043 states. [2018-10-26 21:26:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255043 states to 255043 states and 280711 transitions. [2018-10-26 21:26:48,178 INFO L78 Accepts]: Start accepts. Automaton has 255043 states and 280711 transitions. Word has length 566 [2018-10-26 21:26:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:48,178 INFO L481 AbstractCegarLoop]: Abstraction has 255043 states and 280711 transitions. [2018-10-26 21:26:48,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:26:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 255043 states and 280711 transitions. [2018-10-26 21:26:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-10-26 21:26:48,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:48,211 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:48,211 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:48,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:48,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1997089938, now seen corresponding path program 1 times [2018-10-26 21:26:48,212 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:48,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:48,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:48,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:48,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:48,707 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 21:26:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-10-26 21:26:48,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:48,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:26:48,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:26:48,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:26:48,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:48,938 INFO L87 Difference]: Start difference. First operand 255043 states and 280711 transitions. Second operand 4 states. [2018-10-26 21:27:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:03,400 INFO L93 Difference]: Finished difference Result 522690 states and 574840 transitions. [2018-10-26 21:27:03,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:27:03,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 629 [2018-10-26 21:27:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:03,643 INFO L225 Difference]: With dead ends: 522690 [2018-10-26 21:27:03,643 INFO L226 Difference]: Without dead ends: 229750 [2018-10-26 21:27:03,737 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 [2018-10-26 21:27:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229750 states. [2018-10-26 21:27:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229750 to 213989. [2018-10-26 21:27:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213989 states. [2018-10-26 21:27:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213989 states to 213989 states and 233021 transitions. [2018-10-26 21:27:06,682 INFO L78 Accepts]: Start accepts. Automaton has 213989 states and 233021 transitions. Word has length 629 [2018-10-26 21:27:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:06,683 INFO L481 AbstractCegarLoop]: Abstraction has 213989 states and 233021 transitions. [2018-10-26 21:27:06,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:27:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 213989 states and 233021 transitions. [2018-10-26 21:27:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2018-10-26 21:27:06,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:06,715 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:27:06,715 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:06,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:06,715 INFO L82 PathProgramCache]: Analyzing trace with hash 40773872, now seen corresponding path program 1 times [2018-10-26 21:27:06,716 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:06,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:06,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:06,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:06,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:07,440 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-26 21:27:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 776 proven. 8 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-10-26 21:27:08,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:27:08,320 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:27:08,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:08,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:27:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 961 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-26 21:27:08,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:27:08,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:27:08,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:27:08,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:27:08,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:08,861 INFO L87 Difference]: Start difference. First operand 213989 states and 233021 transitions. Second operand 4 states. [2018-10-26 21:27:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:17,157 INFO L93 Difference]: Finished difference Result 454784 states and 493800 transitions. [2018-10-26 21:27:17,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:27:17,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 690 [2018-10-26 21:27:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:17,405 INFO L225 Difference]: With dead ends: 454784 [2018-10-26 21:27:17,405 INFO L226 Difference]: Without dead ends: 241585 [2018-10-26 21:27:17,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241585 states. [2018-10-26 21:27:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241585 to 221867. [2018-10-26 21:27:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221867 states. [2018-10-26 21:27:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221867 states to 221867 states and 241036 transitions. [2018-10-26 21:27:19,938 INFO L78 Accepts]: Start accepts. Automaton has 221867 states and 241036 transitions. Word has length 690 [2018-10-26 21:27:19,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:19,939 INFO L481 AbstractCegarLoop]: Abstraction has 221867 states and 241036 transitions. [2018-10-26 21:27:19,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:27:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 221867 states and 241036 transitions. [2018-10-26 21:27:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-10-26 21:27:19,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:19,979 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:27:19,979 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:19,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:19,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1193181533, now seen corresponding path program 1 times [2018-10-26 21:27:19,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:19,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:19,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:19,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:19,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:20,557 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 21:27:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 1276 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2018-10-26 21:27:21,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:27:21,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:27:21,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:27:21,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:27:21,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:21,373 INFO L87 Difference]: Start difference. First operand 221867 states and 241036 transitions. Second operand 4 states. [2018-10-26 21:27:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:33,314 INFO L93 Difference]: Finished difference Result 442177 states and 480422 transitions. [2018-10-26 21:27:33,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:27:33,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 742 [2018-10-26 21:27:33,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:33,574 INFO L225 Difference]: With dead ends: 442177 [2018-10-26 21:27:33,575 INFO L226 Difference]: Without dead ends: 221100 [2018-10-26 21:27:33,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221100 states. [2018-10-26 21:27:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221100 to 218712. [2018-10-26 21:27:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218712 states. [2018-10-26 21:27:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218712 states to 218712 states and 233781 transitions. [2018-10-26 21:27:36,087 INFO L78 Accepts]: Start accepts. Automaton has 218712 states and 233781 transitions. Word has length 742 [2018-10-26 21:27:36,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:36,088 INFO L481 AbstractCegarLoop]: Abstraction has 218712 states and 233781 transitions. [2018-10-26 21:27:36,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:27:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 218712 states and 233781 transitions. [2018-10-26 21:27:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-10-26 21:27:36,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:36,120 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:27:36,120 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:36,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:36,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1393003149, now seen corresponding path program 1 times [2018-10-26 21:27:36,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:36,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:36,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:36,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:36,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 1280 proven. 16 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2018-10-26 21:27:38,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:27:38,264 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:27:38,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:38,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:27:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 1396 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2018-10-26 21:27:42,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:27:42,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:27:42,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:27:42,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:27:42,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:27:42,559 INFO L87 Difference]: Start difference. First operand 218712 states and 233781 transitions. Second operand 5 states. Received shutdown request... [2018-10-26 21:27:46,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:27:46,091 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:27:46,098 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:27:46,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:27:46 BoogieIcfgContainer [2018-10-26 21:27:46,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:27:46,099 INFO L168 Benchmark]: Toolchain (without parser) took 221580.96 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 21:27:46,100 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-26 21:27:46,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2517.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:46,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 874.48 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:46,103 INFO L168 Benchmark]: Boogie Preprocessor took 357.68 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: 62.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:46,103 INFO L168 Benchmark]: RCFGBuilder took 14008.24 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 241.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 35.0 MB). Peak memory consumption was 606.5 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:46,104 INFO L168 Benchmark]: TraceAbstraction took 203817.82 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-26 21:27:46,110 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2517.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 874.48 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 357.68 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: 62.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14008.24 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 241.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 35.0 MB). Peak memory consumption was 606.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203817.82 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (218712states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (11997 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 203.7s OverallTime, 12 OverallIterations, 8 TraceHistogramMax, 167.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8633 SDtfs, 29012 SDslu, 3128 SDs, 0 SdLazy, 59600 SolverSat, 15510 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 134.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1981 GetRequests, 1942 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260561occurred in iteration=7, 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: 20.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 69077 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 7146 NumberOfCodeBlocks, 7146 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7130 ConstructedInterpolants, 0 QuantifiedInterpolants, 9625510 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2499 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 12080/12112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown