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_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:19:05,893 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:19:05,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:19:05,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:19:05,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:19:05,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:19:05,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:19:05,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:19:05,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:19:05,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:19:05,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:19:05,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:19:05,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:19:05,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:19:05,923 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:19:05,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:19:05,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:19:05,929 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:19:05,931 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:19:05,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:19:05,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:19:05,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:19:05,945 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:19:05,956 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 20:19:05,983 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:19:05,983 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:19:05,984 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:19:05,985 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:19:05,985 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:19:05,986 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:19:05,986 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:19:05,986 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:19:05,986 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:19:05,986 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:19:05,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:19:05,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:19:05,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:19:05,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:19:05,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:19:05,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:19:05,990 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:19:05,990 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:19:05,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:19:05,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:19:05,991 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:19:05,991 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:19:05,991 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:19:05,991 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:19:05,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:19:05,992 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:19:05,992 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:19:05,992 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:19:06,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:19:06,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:19:06,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:19:06,070 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:19:06,071 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:19:06,072 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-10-23 20:19:06,130 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8902ef676/5eebe8cf505c4d1c8e3cc5c52f5ea0c4/FLAGb244a9078 [2018-10-23 20:19:06,965 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:19:06,966 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-10-23 20:19:07,004 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8902ef676/5eebe8cf505c4d1c8e3cc5c52f5ea0c4/FLAGb244a9078 [2018-10-23 20:19:07,020 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8902ef676/5eebe8cf505c4d1c8e3cc5c52f5ea0c4 [2018-10-23 20:19:07,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:19:07,033 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:19:07,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:19:07,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:19:07,038 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:19:07,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:07" (1/1) ... [2018-10-23 20:19:07,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1ab2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:07, skipping insertion in model container [2018-10-23 20:19:07,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:07" (1/1) ... [2018-10-23 20:19:07,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:19:07,225 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:19:08,636 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:19:08,641 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:19:09,469 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:19:09,509 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:19:09,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09 WrapperNode [2018-10-23 20:19:09,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:19:09,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:19:09,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:19:09,512 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:19:09,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:09,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:19:10,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:19:10,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:19:10,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:19:10,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (1/1) ... [2018-10-23 20:19:10,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:19:10,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:19:10,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:19:10,885 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:19:10,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (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 20:19:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:19:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:19:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:19:24,407 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:19:24,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:24 BoogieIcfgContainer [2018-10-23 20:19:24,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:19:24,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:19:24,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:19:24,412 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:19:24,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:07" (1/3) ... [2018-10-23 20:19:24,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18850ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:24, skipping insertion in model container [2018-10-23 20:19:24,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:09" (2/3) ... [2018-10-23 20:19:24,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18850ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:24, skipping insertion in model container [2018-10-23 20:19:24,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:24" (3/3) ... [2018-10-23 20:19:24,416 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label31_true-unreach-call.c [2018-10-23 20:19:24,426 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:19:24,436 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:19:24,455 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:19:24,501 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:19:24,502 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:19:24,502 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:19:24,502 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:19:24,502 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:19:24,502 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:19:24,502 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:19:24,503 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:19:24,503 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:19:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:19:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-23 20:19:24,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:24,552 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 20:19:24,555 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:24,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:24,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-10-23 20:19:24,562 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:24,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:24,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:24,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:24,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:25,027 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 20:19:25,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:25,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:19:25,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:25,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:25,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:25,055 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:19:41,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:41,417 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-23 20:19:41,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:41,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-23 20:19:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:41,468 INFO L225 Difference]: With dead ends: 3993 [2018-10-23 20:19:41,469 INFO L226 Difference]: Without dead ends: 2887 [2018-10-23 20:19:41,478 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 20:19:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-23 20:19:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-23 20:19:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-23 20:19:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-23 20:19:41,646 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 41 [2018-10-23 20:19:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:41,647 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-23 20:19:41,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-23 20:19:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-23 20:19:41,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:41,657 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] [2018-10-23 20:19:41,657 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:41,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:41,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1737438858, now seen corresponding path program 1 times [2018-10-23 20:19:41,659 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:41,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:41,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:41,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:41,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:42,060 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 20:19:42,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:42,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:19:42,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:42,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:42,064 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-23 20:19:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:58,876 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-23 20:19:58,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:58,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-23 20:19:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:58,911 INFO L225 Difference]: With dead ends: 7120 [2018-10-23 20:19:58,911 INFO L226 Difference]: Without dead ends: 5186 [2018-10-23 20:19:58,916 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 20:19:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-23 20:19:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-23 20:19:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-23 20:19:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-23 20:19:59,013 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 110 [2018-10-23 20:19:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:59,014 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-23 20:19:59,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-23 20:19:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-23 20:19:59,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:59,018 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] [2018-10-23 20:19:59,018 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:59,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:59,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2072624303, now seen corresponding path program 1 times [2018-10-23 20:19:59,019 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:59,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:59,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:59,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:59,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:59,284 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 20:19:59,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:59,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:19:59,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:59,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:59,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:59,286 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-23 20:20:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:09,098 INFO L93 Difference]: Finished difference Result 12674 states and 22438 transitions. [2018-10-23 20:20:09,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:20:09,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-10-23 20:20:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:09,150 INFO L225 Difference]: With dead ends: 12674 [2018-10-23 20:20:09,151 INFO L226 Difference]: Without dead ends: 9122 [2018-10-23 20:20:09,158 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 20:20:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2018-10-23 20:20:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 9115. [2018-10-23 20:20:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2018-10-23 20:20:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 14199 transitions. [2018-10-23 20:20:09,336 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 14199 transitions. Word has length 123 [2018-10-23 20:20:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:09,339 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 14199 transitions. [2018-10-23 20:20:09,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:20:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 14199 transitions. [2018-10-23 20:20:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-23 20:20:09,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:09,345 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] [2018-10-23 20:20:09,346 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:09,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:09,346 INFO L82 PathProgramCache]: Analyzing trace with hash 301261888, now seen corresponding path program 1 times [2018-10-23 20:20:09,346 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:09,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:09,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:09,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:09,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:09,771 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:20:10,018 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 20:20:10,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:10,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:10,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:10,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:10,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:10,020 INFO L87 Difference]: Start difference. First operand 9115 states and 14199 transitions. Second operand 5 states. [2018-10-23 20:20:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:21,112 INFO L93 Difference]: Finished difference Result 29264 states and 45079 transitions. [2018-10-23 20:20:21,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:20:21,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-10-23 20:20:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:21,176 INFO L225 Difference]: With dead ends: 29264 [2018-10-23 20:20:21,176 INFO L226 Difference]: Without dead ends: 20151 [2018-10-23 20:20:21,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:20:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-23 20:20:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-23 20:20:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-23 20:20:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-23 20:20:21,521 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 144 [2018-10-23 20:20:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:21,524 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-23 20:20:21,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:20:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-23 20:20:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-23 20:20:21,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:21,526 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] [2018-10-23 20:20:21,527 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:21,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:21,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1666609818, now seen corresponding path program 1 times [2018-10-23 20:20:21,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:21,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:21,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:21,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:21,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-23 20:20:22,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:20:22,336 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 20:20:22,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:22,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:20:22,500 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 20:20:22,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:20:22,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 20:20:22,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:22,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:22,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:22,525 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 5 states. [2018-10-23 20:20:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:40,155 INFO L93 Difference]: Finished difference Result 71841 states and 101590 transitions. [2018-10-23 20:20:40,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:20:40,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2018-10-23 20:20:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:40,253 INFO L225 Difference]: With dead ends: 71841 [2018-10-23 20:20:40,254 INFO L226 Difference]: Without dead ends: 52482 [2018-10-23 20:20:40,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:20:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52482 states. [2018-10-23 20:20:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52482 to 52448. [2018-10-23 20:20:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52448 states. [2018-10-23 20:20:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52448 states to 52448 states and 62491 transitions. [2018-10-23 20:20:40,937 INFO L78 Accepts]: Start accepts. Automaton has 52448 states and 62491 transitions. Word has length 167 [2018-10-23 20:20:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:40,938 INFO L481 AbstractCegarLoop]: Abstraction has 52448 states and 62491 transitions. [2018-10-23 20:20:40,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:20:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52448 states and 62491 transitions. [2018-10-23 20:20:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-23 20:20:40,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:40,950 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, 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] [2018-10-23 20:20:40,951 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:40,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash -802390206, now seen corresponding path program 1 times [2018-10-23 20:20:40,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:40,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:40,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:40,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:40,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-23 20:20:41,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:41,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:41,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:41,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:41,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:41,479 INFO L87 Difference]: Start difference. First operand 52448 states and 62491 transitions. Second operand 5 states. [2018-10-23 20:20:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:59,928 INFO L93 Difference]: Finished difference Result 165087 states and 196876 transitions. [2018-10-23 20:20:59,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:20:59,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2018-10-23 20:20:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:00,091 INFO L225 Difference]: With dead ends: 165087 [2018-10-23 20:21:00,091 INFO L226 Difference]: Without dead ends: 113429 [2018-10-23 20:21:00,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:21:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113429 states. [2018-10-23 20:21:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113429 to 113259. [2018-10-23 20:21:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113259 states. [2018-10-23 20:21:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113259 states to 113259 states and 132702 transitions. [2018-10-23 20:21:01,842 INFO L78 Accepts]: Start accepts. Automaton has 113259 states and 132702 transitions. Word has length 307 [2018-10-23 20:21:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:01,842 INFO L481 AbstractCegarLoop]: Abstraction has 113259 states and 132702 transitions. [2018-10-23 20:21:01,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:21:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 113259 states and 132702 transitions. [2018-10-23 20:21:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-23 20:21:01,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:01,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:01,861 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:01,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:01,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1669246596, now seen corresponding path program 1 times [2018-10-23 20:21:01,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:01,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:01,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:01,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:01,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-23 20:21:02,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:02,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:02,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:02,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:02,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:02,385 INFO L87 Difference]: Start difference. First operand 113259 states and 132702 transitions. Second operand 4 states. [2018-10-23 20:21:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:14,063 INFO L93 Difference]: Finished difference Result 289604 states and 341524 transitions. [2018-10-23 20:21:14,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:14,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2018-10-23 20:21:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:14,279 INFO L225 Difference]: With dead ends: 289604 [2018-10-23 20:21:14,279 INFO L226 Difference]: Without dead ends: 177135 [2018-10-23 20:21:14,342 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 [2018-10-23 20:21:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177135 states. [2018-10-23 20:21:15,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177135 to 175509. [2018-10-23 20:21:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175509 states. [2018-10-23 20:21:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175509 states to 175509 states and 200034 transitions. [2018-10-23 20:21:15,836 INFO L78 Accepts]: Start accepts. Automaton has 175509 states and 200034 transitions. Word has length 365 [2018-10-23 20:21:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:15,837 INFO L481 AbstractCegarLoop]: Abstraction has 175509 states and 200034 transitions. [2018-10-23 20:21:15,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 175509 states and 200034 transitions. [2018-10-23 20:21:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-10-23 20:21:15,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:15,864 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:21:15,864 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:15,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:15,865 INFO L82 PathProgramCache]: Analyzing trace with hash 158609359, now seen corresponding path program 1 times [2018-10-23 20:21:15,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:15,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:15,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:15,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:15,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-23 20:21:16,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:16,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:21:16,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:21:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:21:16,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:16,306 INFO L87 Difference]: Start difference. First operand 175509 states and 200034 transitions. Second operand 3 states. [2018-10-23 20:21:25,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:25,849 INFO L93 Difference]: Finished difference Result 444781 states and 506737 transitions. [2018-10-23 20:21:25,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:21:25,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 397 [2018-10-23 20:21:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:26,286 INFO L225 Difference]: With dead ends: 444781 [2018-10-23 20:21:26,287 INFO L226 Difference]: Without dead ends: 270062 [2018-10-23 20:21:26,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270062 states. [2018-10-23 20:21:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270062 to 269272. [2018-10-23 20:21:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269272 states. [2018-10-23 20:21:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269272 states to 269272 states and 300224 transitions. [2018-10-23 20:21:30,212 INFO L78 Accepts]: Start accepts. Automaton has 269272 states and 300224 transitions. Word has length 397 [2018-10-23 20:21:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:30,212 INFO L481 AbstractCegarLoop]: Abstraction has 269272 states and 300224 transitions. [2018-10-23 20:21:30,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:21:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 269272 states and 300224 transitions. [2018-10-23 20:21:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2018-10-23 20:21:30,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:30,473 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:30,474 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:30,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:30,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1788133953, now seen corresponding path program 1 times [2018-10-23 20:21:30,474 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:30,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:30,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:30,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:30,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1662 backedges. 929 proven. 0 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2018-10-23 20:21:32,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:32,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:21:32,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:32,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:32,943 INFO L87 Difference]: Start difference. First operand 269272 states and 300224 transitions. Second operand 4 states. [2018-10-23 20:21:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:45,440 INFO L93 Difference]: Finished difference Result 540885 states and 603248 transitions. [2018-10-23 20:21:45,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:45,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1270 [2018-10-23 20:21:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:45,840 INFO L225 Difference]: With dead ends: 540885 [2018-10-23 20:21:45,840 INFO L226 Difference]: Without dead ends: 264505 [2018-10-23 20:21:45,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264505 states. [2018-10-23 20:21:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264505 to 257405. [2018-10-23 20:21:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257405 states. [2018-10-23 20:21:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257405 states to 257405 states and 275736 transitions. [2018-10-23 20:21:56,219 INFO L78 Accepts]: Start accepts. Automaton has 257405 states and 275736 transitions. Word has length 1270 [2018-10-23 20:21:56,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:56,220 INFO L481 AbstractCegarLoop]: Abstraction has 257405 states and 275736 transitions. [2018-10-23 20:21:56,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:56,220 INFO L276 IsEmpty]: Start isEmpty. Operand 257405 states and 275736 transitions. [2018-10-23 20:21:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2018-10-23 20:21:56,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:56,410 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:56,410 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:56,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:56,411 INFO L82 PathProgramCache]: Analyzing trace with hash 912402643, now seen corresponding path program 1 times [2018-10-23 20:21:56,411 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:56,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:56,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:56,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:56,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 1028 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2018-10-23 20:21:58,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:58,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:58,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:58,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:58,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:58,594 INFO L87 Difference]: Start difference. First operand 257405 states and 275736 transitions. Second operand 4 states. [2018-10-23 20:22:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:09,295 INFO L93 Difference]: Finished difference Result 505363 states and 541424 transitions. [2018-10-23 20:22:09,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:09,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1323 [2018-10-23 20:22:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:09,622 INFO L225 Difference]: With dead ends: 505363 [2018-10-23 20:22:09,622 INFO L226 Difference]: Without dead ends: 244007 [2018-10-23 20:22:09,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244007 states. [2018-10-23 20:22:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244007 to 240035. [2018-10-23 20:22:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240035 states. [2018-10-23 20:22:13,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240035 states to 240035 states and 253148 transitions. [2018-10-23 20:22:13,574 INFO L78 Accepts]: Start accepts. Automaton has 240035 states and 253148 transitions. Word has length 1323 [2018-10-23 20:22:13,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:13,575 INFO L481 AbstractCegarLoop]: Abstraction has 240035 states and 253148 transitions. [2018-10-23 20:22:13,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 240035 states and 253148 transitions. [2018-10-23 20:22:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1430 [2018-10-23 20:22:13,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:13,739 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:13,739 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:13,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash 438575802, now seen corresponding path program 1 times [2018-10-23 20:22:13,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:13,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:13,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:13,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:13,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:14,572 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:22:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1787 backedges. 1078 proven. 0 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2018-10-23 20:22:16,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:16,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:22:16,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:16,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:16,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:16,269 INFO L87 Difference]: Start difference. First operand 240035 states and 253148 transitions. Second operand 4 states. [2018-10-23 20:22:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:24,179 INFO L93 Difference]: Finished difference Result 490314 states and 516901 transitions. [2018-10-23 20:22:24,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:24,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1429 [2018-10-23 20:22:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:24,437 INFO L225 Difference]: With dead ends: 490314 [2018-10-23 20:22:24,437 INFO L226 Difference]: Without dead ends: 226604 [2018-10-23 20:22:25,124 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 20:22:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226604 states. [2018-10-23 20:22:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226604 to 216357. [2018-10-23 20:22:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216357 states. [2018-10-23 20:22:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216357 states to 216357 states and 227562 transitions. [2018-10-23 20:22:27,719 INFO L78 Accepts]: Start accepts. Automaton has 216357 states and 227562 transitions. Word has length 1429 [2018-10-23 20:22:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:27,719 INFO L481 AbstractCegarLoop]: Abstraction has 216357 states and 227562 transitions. [2018-10-23 20:22:27,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 216357 states and 227562 transitions. [2018-10-23 20:22:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1609 [2018-10-23 20:22:27,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:27,875 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:27,875 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:27,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2113052933, now seen corresponding path program 1 times [2018-10-23 20:22:27,876 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:27,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:27,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:27,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:27,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:28,781 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:22:29,460 WARN L179 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:22:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 1664 proven. 12 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2018-10-23 20:22:34,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:22:34,422 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 20:22:34,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:34,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:22:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 2055 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2018-10-23 20:22:36,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:22:36,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-23 20:22:36,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:22:36,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:22:36,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:22:36,060 INFO L87 Difference]: Start difference. First operand 216357 states and 227562 transitions. Second operand 8 states. [2018-10-23 20:22:37,082 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 Received shutdown request... [2018-10-23 20:22:47,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:22:47,017 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:22:47,024 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:22:47,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:22:47 BoogieIcfgContainer [2018-10-23 20:22:47,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:22:47,025 INFO L168 Benchmark]: Toolchain (without parser) took 219992.77 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 20:22:47,026 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:22:47,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2476.45 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:47,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 900.06 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -995.2 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:47,029 INFO L168 Benchmark]: Boogie Preprocessor took 473.23 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: 65.3 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:47,029 INFO L168 Benchmark]: RCFGBuilder took 13523.18 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 267.9 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -48.0 MB). Peak memory consumption was 621.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:22:47,030 INFO L168 Benchmark]: TraceAbstraction took 202615.10 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 20:22:47,036 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2476.45 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 900.06 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -995.2 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 473.23 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: 65.3 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13523.18 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 267.9 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -48.0 MB). Peak memory consumption was 621.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202615.10 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (216357states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (75668 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 202.5s OverallTime, 12 OverallIterations, 8 TraceHistogramMax, 156.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8603 SDtfs, 36912 SDslu, 2815 SDs, 0 SdLazy, 59357 SolverSat, 18275 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 122.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1844 GetRequests, 1795 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=269272occurred 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: 25.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 26531 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 9059 NumberOfCodeBlocks, 9059 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 9045 ConstructedInterpolants, 0 QuantifiedInterpolants, 19720740 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2098 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 11927/11945 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown