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/Problem16_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:29:46,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:29:46,964 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:29:46,981 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:29:46,981 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:29:46,983 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:29:46,985 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:29:46,988 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:29:46,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:29:46,999 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:29:47,000 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:29:47,001 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:29:47,002 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:29:47,004 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:29:47,008 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:29:47,009 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:29:47,009 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:29:47,013 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:29:47,018 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:29:47,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:29:47,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:29:47,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:29:47,026 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:29:47,026 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:29:47,030 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:29:47,031 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:29:47,033 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:29:47,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:29:47,035 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:29:47,036 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:29:47,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:29:47,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:29:47,040 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 19:29:47,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:29:47,055 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:29:47,056 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:29:47,056 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:29:47,056 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:29:47,057 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:29:47,057 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:29:47,057 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:29:47,057 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:29:47,057 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:29:47,057 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:29:47,058 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:29:47,058 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:29:47,058 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:29:47,058 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:29:47,058 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:29:47,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:29:47,059 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:29:47,059 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:29:47,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:29:47,059 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:29:47,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:29:47,060 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:29:47,060 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:29:47,060 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:29:47,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:29:47,060 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:29:47,061 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:29:47,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:29:47,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:29:47,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:29:47,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:29:47,151 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:29:47,152 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-26 19:29:47,227 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8c1cc0f32/d5370ce290c74a099ca97e46e22a7cf9/FLAGaf134e4f5 [2018-10-26 19:29:47,901 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:29:47,902 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-26 19:29:47,920 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8c1cc0f32/d5370ce290c74a099ca97e46e22a7cf9/FLAGaf134e4f5 [2018-10-26 19:29:47,940 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8c1cc0f32/d5370ce290c74a099ca97e46e22a7cf9 [2018-10-26 19:29:47,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:29:47,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:29:47,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:29:47,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:29:47,964 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:29:47,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:29:47" (1/1) ... [2018-10-26 19:29:47,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3cbd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:47, skipping insertion in model container [2018-10-26 19:29:47,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:29:47" (1/1) ... [2018-10-26 19:29:47,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:29:48,095 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:29:48,783 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:29:48,787 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:29:49,023 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:29:49,044 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:29:49,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49 WrapperNode [2018-10-26 19:29:49,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:29:49,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:29:49,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:29:49,047 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:29:49,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:29:49,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:29:49,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:29:49,362 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:29:49,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (1/1) ... [2018-10-26 19:29:49,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:29:49,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:29:49,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:29:49,566 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:29:49,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (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 19:29:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:29:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:29:49,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:29:55,968 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:29:55,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:29:55 BoogieIcfgContainer [2018-10-26 19:29:55,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:29:55,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:29:55,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:29:55,973 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:29:55,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:29:47" (1/3) ... [2018-10-26 19:29:55,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fb7dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:29:55, skipping insertion in model container [2018-10-26 19:29:55,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:29:49" (2/3) ... [2018-10-26 19:29:55,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44fb7dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:29:55, skipping insertion in model container [2018-10-26 19:29:55,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:29:55" (3/3) ... [2018-10-26 19:29:55,977 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30_false-unreach-call.c [2018-10-26 19:29:55,988 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:29:55,997 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:29:56,015 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:29:56,055 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:29:56,055 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:29:56,056 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:29:56,056 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:29:56,056 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:29:56,056 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:29:56,056 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:29:56,057 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:29:56,057 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:29:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-10-26 19:29:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 19:29:56,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:29:56,093 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:29:56,095 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:29:56,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:29:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-26 19:29:56,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:29:56,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:29:56,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:56,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:29:56,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:29:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:29:56,355 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 19:29:56,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:29:56,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:29:56,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:29:56,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:29:56,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:29:56,381 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2018-10-26 19:30:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:03,425 INFO L93 Difference]: Finished difference Result 1473 states and 2781 transitions. [2018-10-26 19:30:03,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:30:03,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-26 19:30:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:03,459 INFO L225 Difference]: With dead ends: 1473 [2018-10-26 19:30:03,459 INFO L226 Difference]: Without dead ends: 1069 [2018-10-26 19:30:03,466 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 19:30:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-26 19:30:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2018-10-26 19:30:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2018-10-26 19:30:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1914 transitions. [2018-10-26 19:30:03,582 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1914 transitions. Word has length 16 [2018-10-26 19:30:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:03,583 INFO L481 AbstractCegarLoop]: Abstraction has 1069 states and 1914 transitions. [2018-10-26 19:30:03,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:30:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1914 transitions. [2018-10-26 19:30:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-26 19:30:03,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:03,587 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:30:03,588 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:03,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:03,588 INFO L82 PathProgramCache]: Analyzing trace with hash -800284846, now seen corresponding path program 1 times [2018-10-26 19:30:03,588 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:03,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:03,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:03,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:03,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:03,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:03,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:30:03,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:30:03,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:30:03,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:30:03,808 INFO L87 Difference]: Start difference. First operand 1069 states and 1914 transitions. Second operand 4 states. [2018-10-26 19:30:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:09,131 INFO L93 Difference]: Finished difference Result 4116 states and 7498 transitions. [2018-10-26 19:30:09,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:30:09,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-10-26 19:30:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:09,150 INFO L225 Difference]: With dead ends: 4116 [2018-10-26 19:30:09,150 INFO L226 Difference]: Without dead ends: 3049 [2018-10-26 19:30:09,156 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 19:30:09,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2018-10-26 19:30:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3049. [2018-10-26 19:30:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3049 states. [2018-10-26 19:30:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4881 transitions. [2018-10-26 19:30:09,245 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4881 transitions. Word has length 83 [2018-10-26 19:30:09,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:09,246 INFO L481 AbstractCegarLoop]: Abstraction has 3049 states and 4881 transitions. [2018-10-26 19:30:09,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:30:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4881 transitions. [2018-10-26 19:30:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-26 19:30:09,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:09,254 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:30:09,255 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:09,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:09,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1554734504, now seen corresponding path program 1 times [2018-10-26 19:30:09,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:09,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:09,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:09,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:09,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:09,821 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-26 19:30:09,960 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-26 19:30:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:10,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:10,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:30:10,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:30:10,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:30:10,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:30:10,173 INFO L87 Difference]: Start difference. First operand 3049 states and 4881 transitions. Second operand 7 states. [2018-10-26 19:30:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:21,354 INFO L93 Difference]: Finished difference Result 9395 states and 14329 transitions. [2018-10-26 19:30:21,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:30:21,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2018-10-26 19:30:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:21,388 INFO L225 Difference]: With dead ends: 9395 [2018-10-26 19:30:21,388 INFO L226 Difference]: Without dead ends: 6348 [2018-10-26 19:30:21,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:30:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2018-10-26 19:30:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6016. [2018-10-26 19:30:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6016 states. [2018-10-26 19:30:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 8749 transitions. [2018-10-26 19:30:21,512 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 8749 transitions. Word has length 151 [2018-10-26 19:30:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:21,513 INFO L481 AbstractCegarLoop]: Abstraction has 6016 states and 8749 transitions. [2018-10-26 19:30:21,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:30:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 8749 transitions. [2018-10-26 19:30:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-26 19:30:21,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:21,521 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:21,521 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:21,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:21,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1804448015, now seen corresponding path program 1 times [2018-10-26 19:30:21,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:21,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:21,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:21,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:21,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:30:22,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:22,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:30:22,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:30:22,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:30:22,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:30:22,225 INFO L87 Difference]: Start difference. First operand 6016 states and 8749 transitions. Second operand 7 states. [2018-10-26 19:30:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:27,360 INFO L93 Difference]: Finished difference Result 16156 states and 22422 transitions. [2018-10-26 19:30:27,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:30:27,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2018-10-26 19:30:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:27,395 INFO L225 Difference]: With dead ends: 16156 [2018-10-26 19:30:27,396 INFO L226 Difference]: Without dead ends: 7990 [2018-10-26 19:30:27,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:30:27,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7990 states. [2018-10-26 19:30:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7990 to 7990. [2018-10-26 19:30:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7990 states. [2018-10-26 19:30:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 9259 transitions. [2018-10-26 19:30:27,533 INFO L78 Accepts]: Start accepts. Automaton has 7990 states and 9259 transitions. Word has length 319 [2018-10-26 19:30:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:27,534 INFO L481 AbstractCegarLoop]: Abstraction has 7990 states and 9259 transitions. [2018-10-26 19:30:27,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:30:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7990 states and 9259 transitions. [2018-10-26 19:30:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-26 19:30:27,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:27,542 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:27,543 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:27,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:27,543 INFO L82 PathProgramCache]: Analyzing trace with hash 104442207, now seen corresponding path program 1 times [2018-10-26 19:30:27,543 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:27,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:27,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:27,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:27,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:27,916 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 19:30:28,174 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-10-26 19:30:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 19:30:28,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:28,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:30:28,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:30:28,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:30:28,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:30:28,572 INFO L87 Difference]: Start difference. First operand 7990 states and 9259 transitions. Second operand 7 states. [2018-10-26 19:30:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:33,605 INFO L93 Difference]: Finished difference Result 16383 states and 18928 transitions. [2018-10-26 19:30:33,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:30:33,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2018-10-26 19:30:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:33,637 INFO L225 Difference]: With dead ends: 16383 [2018-10-26 19:30:33,637 INFO L226 Difference]: Without dead ends: 8395 [2018-10-26 19:30:33,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:30:33,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2018-10-26 19:30:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 8320. [2018-10-26 19:30:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8320 states. [2018-10-26 19:30:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8320 states to 8320 states and 9591 transitions. [2018-10-26 19:30:33,760 INFO L78 Accepts]: Start accepts. Automaton has 8320 states and 9591 transitions. Word has length 363 [2018-10-26 19:30:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:33,761 INFO L481 AbstractCegarLoop]: Abstraction has 8320 states and 9591 transitions. [2018-10-26 19:30:33,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:30:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8320 states and 9591 transitions. [2018-10-26 19:30:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-26 19:30:33,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:33,774 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 19:30:33,774 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:33,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:33,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1368709533, now seen corresponding path program 1 times [2018-10-26 19:30:33,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:33,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:33,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:33,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:33,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-10-26 19:30:34,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:30:34,217 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 19:30:34,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:34,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-10-26 19:30:34,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:30:34,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 19:30:34,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:30:34,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:30:34,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:30:34,892 INFO L87 Difference]: Start difference. First operand 8320 states and 9591 transitions. Second operand 5 states. [2018-10-26 19:30:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:38,178 INFO L93 Difference]: Finished difference Result 18948 states and 22314 transitions. [2018-10-26 19:30:38,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:30:38,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-10-26 19:30:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:38,209 INFO L225 Difference]: With dead ends: 18948 [2018-10-26 19:30:38,209 INFO L226 Difference]: Without dead ends: 10960 [2018-10-26 19:30:38,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:30:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2018-10-26 19:30:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 10960. [2018-10-26 19:30:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10960 states. [2018-10-26 19:30:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10960 states to 10960 states and 12608 transitions. [2018-10-26 19:30:38,398 INFO L78 Accepts]: Start accepts. Automaton has 10960 states and 12608 transitions. Word has length 467 [2018-10-26 19:30:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:38,399 INFO L481 AbstractCegarLoop]: Abstraction has 10960 states and 12608 transitions. [2018-10-26 19:30:38,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:30:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 10960 states and 12608 transitions. [2018-10-26 19:30:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-10-26 19:30:38,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:38,422 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:30:38,422 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:38,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:38,423 INFO L82 PathProgramCache]: Analyzing trace with hash -682465616, now seen corresponding path program 1 times [2018-10-26 19:30:38,423 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:38,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:38,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:38,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:38,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:39,031 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:30:39,419 WARN L179 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-26 19:30:39,856 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-10-26 19:30:40,308 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 4 [2018-10-26 19:30:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 399 proven. 65 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 19:30:41,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:30:41,236 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 19:30:41,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:41,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:30:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 19:30:41,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:30:41,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2018-10-26 19:30:41,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:30:41,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:30:41,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:30:41,676 INFO L87 Difference]: Start difference. First operand 10960 states and 12608 transitions. Second operand 9 states. [2018-10-26 19:30:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:48,203 INFO L93 Difference]: Finished difference Result 27231 states and 30909 transitions. [2018-10-26 19:30:48,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:30:48,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 579 [2018-10-26 19:30:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:48,236 INFO L225 Difference]: With dead ends: 27231 [2018-10-26 19:30:48,236 INFO L226 Difference]: Without dead ends: 16603 [2018-10-26 19:30:48,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:30:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2018-10-26 19:30:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 14589. [2018-10-26 19:30:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14589 states. [2018-10-26 19:30:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14589 states to 14589 states and 16211 transitions. [2018-10-26 19:30:48,443 INFO L78 Accepts]: Start accepts. Automaton has 14589 states and 16211 transitions. Word has length 579 [2018-10-26 19:30:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:48,444 INFO L481 AbstractCegarLoop]: Abstraction has 14589 states and 16211 transitions. [2018-10-26 19:30:48,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:30:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 14589 states and 16211 transitions. [2018-10-26 19:30:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2018-10-26 19:30:48,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:48,474 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:30:48,475 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:48,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:48,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1388591904, now seen corresponding path program 1 times [2018-10-26 19:30:48,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:48,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:48,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:48,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:48,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-10-26 19:30:49,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:49,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:30:49,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:30:49,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:30:49,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:30:49,058 INFO L87 Difference]: Start difference. First operand 14589 states and 16211 transitions. Second operand 4 states. [2018-10-26 19:30:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:52,157 INFO L93 Difference]: Finished difference Result 31811 states and 35534 transitions. [2018-10-26 19:30:52,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:30:52,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 705 [2018-10-26 19:30:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:52,179 INFO L225 Difference]: With dead ends: 31811 [2018-10-26 19:30:52,179 INFO L226 Difference]: Without dead ends: 17554 [2018-10-26 19:30:52,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:30:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17554 states. [2018-10-26 19:30:52,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17554 to 17554. [2018-10-26 19:30:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17554 states. [2018-10-26 19:30:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17554 states to 17554 states and 19120 transitions. [2018-10-26 19:30:52,405 INFO L78 Accepts]: Start accepts. Automaton has 17554 states and 19120 transitions. Word has length 705 [2018-10-26 19:30:52,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:52,406 INFO L481 AbstractCegarLoop]: Abstraction has 17554 states and 19120 transitions. [2018-10-26 19:30:52,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:30:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 17554 states and 19120 transitions. [2018-10-26 19:30:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-10-26 19:30:52,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:52,452 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:30:52,452 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:52,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:52,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1722447119, now seen corresponding path program 1 times [2018-10-26 19:30:52,453 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:52,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:52,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:52,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:52,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-26 19:30:53,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:53,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:30:53,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:30:53,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:30:53,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:30:53,373 INFO L87 Difference]: Start difference. First operand 17554 states and 19120 transitions. Second operand 4 states. [2018-10-26 19:30:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:30:56,111 INFO L93 Difference]: Finished difference Result 38076 states and 41607 transitions. [2018-10-26 19:30:56,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:30:56,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 768 [2018-10-26 19:30:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:30:56,130 INFO L225 Difference]: With dead ends: 38076 [2018-10-26 19:30:56,130 INFO L226 Difference]: Without dead ends: 20854 [2018-10-26 19:30:56,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:30:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20854 states. [2018-10-26 19:30:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20854 to 20854. [2018-10-26 19:30:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20854 states. [2018-10-26 19:30:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20854 states to 20854 states and 22319 transitions. [2018-10-26 19:30:56,378 INFO L78 Accepts]: Start accepts. Automaton has 20854 states and 22319 transitions. Word has length 768 [2018-10-26 19:30:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:30:56,379 INFO L481 AbstractCegarLoop]: Abstraction has 20854 states and 22319 transitions. [2018-10-26 19:30:56,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:30:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 20854 states and 22319 transitions. [2018-10-26 19:30:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2018-10-26 19:30:56,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:30:56,408 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2018-10-26 19:30:56,408 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:30:56,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:30:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1595302680, now seen corresponding path program 1 times [2018-10-26 19:30:56,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:30:56,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:30:56,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:56,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:30:56,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:30:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:30:57,285 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:30:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2018-10-26 19:30:57,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:30:57,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:30:57,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:30:57,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:30:57,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:30:57,827 INFO L87 Difference]: Start difference. First operand 20854 states and 22319 transitions. Second operand 4 states. [2018-10-26 19:31:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:31:00,029 INFO L93 Difference]: Finished difference Result 51276 states and 54898 transitions. [2018-10-26 19:31:00,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:31:00,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 913 [2018-10-26 19:31:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:31:00,057 INFO L225 Difference]: With dead ends: 51276 [2018-10-26 19:31:00,057 INFO L226 Difference]: Without dead ends: 26774 [2018-10-26 19:31:00,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:31:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2018-10-26 19:31:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 24132. [2018-10-26 19:31:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24132 states. [2018-10-26 19:31:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24132 states to 24132 states and 25342 transitions. [2018-10-26 19:31:00,325 INFO L78 Accepts]: Start accepts. Automaton has 24132 states and 25342 transitions. Word has length 913 [2018-10-26 19:31:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:31:00,326 INFO L481 AbstractCegarLoop]: Abstraction has 24132 states and 25342 transitions. [2018-10-26 19:31:00,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:31:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24132 states and 25342 transitions. [2018-10-26 19:31:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1255 [2018-10-26 19:31:00,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:31:00,360 INFO L375 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:31:00,360 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:31:00,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:31:00,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1171794564, now seen corresponding path program 1 times [2018-10-26 19:31:00,361 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:31:00,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:31:00,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:00,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:00,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2855 backedges. 1772 proven. 310 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-10-26 19:31:02,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:31:02,955 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 19:31:02,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:03,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:31:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2855 backedges. 2054 proven. 28 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-10-26 19:31:04,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:31:04,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2018-10-26 19:31:04,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:31:04,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:31:04,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:31:04,673 INFO L87 Difference]: Start difference. First operand 24132 states and 25342 transitions. Second operand 7 states. [2018-10-26 19:31:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:31:12,068 INFO L93 Difference]: Finished difference Result 48729 states and 51155 transitions. [2018-10-26 19:31:12,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:31:12,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1254 [2018-10-26 19:31:12,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:31:12,091 INFO L225 Difference]: With dead ends: 48729 [2018-10-26 19:31:12,092 INFO L226 Difference]: Without dead ends: 23477 [2018-10-26 19:31:12,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1256 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:31:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23477 states. [2018-10-26 19:31:12,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23477 to 21489. [2018-10-26 19:31:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21489 states. [2018-10-26 19:31:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21489 states to 21489 states and 22397 transitions. [2018-10-26 19:31:12,306 INFO L78 Accepts]: Start accepts. Automaton has 21489 states and 22397 transitions. Word has length 1254 [2018-10-26 19:31:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:31:12,307 INFO L481 AbstractCegarLoop]: Abstraction has 21489 states and 22397 transitions. [2018-10-26 19:31:12,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:31:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 21489 states and 22397 transitions. [2018-10-26 19:31:12,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1503 [2018-10-26 19:31:12,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:31:12,336 INFO L375 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 19:31:12,336 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:31:12,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:31:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1092969997, now seen corresponding path program 1 times [2018-10-26 19:31:12,337 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:31:12,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:31:12,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:12,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:12,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:13,233 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:31:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3794 backedges. 2775 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2018-10-26 19:31:15,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:31:15,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:31:15,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:31:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:31:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:31:15,383 INFO L87 Difference]: Start difference. First operand 21489 states and 22397 transitions. Second operand 6 states. [2018-10-26 19:31:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:31:17,833 INFO L93 Difference]: Finished difference Result 43640 states and 45474 transitions. [2018-10-26 19:31:17,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:31:17,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1502 [2018-10-26 19:31:17,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:31:17,855 INFO L225 Difference]: With dead ends: 43640 [2018-10-26 19:31:17,855 INFO L226 Difference]: Without dead ends: 22153 [2018-10-26 19:31:17,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:31:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22153 states. [2018-10-26 19:31:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22153 to 21819. [2018-10-26 19:31:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21819 states. [2018-10-26 19:31:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 22733 transitions. [2018-10-26 19:31:18,052 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 22733 transitions. Word has length 1502 [2018-10-26 19:31:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:31:18,053 INFO L481 AbstractCegarLoop]: Abstraction has 21819 states and 22733 transitions. [2018-10-26 19:31:18,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:31:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 22733 transitions. [2018-10-26 19:31:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2018-10-26 19:31:18,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:31:18,077 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 4, 4, 3, 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] [2018-10-26 19:31:18,077 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:31:18,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:31:18,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1624140356, now seen corresponding path program 1 times [2018-10-26 19:31:18,078 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:31:18,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:31:18,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:18,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:18,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 4203 proven. 151 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2018-10-26 19:31:21,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:31:21,996 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 19:31:22,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:22,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:31:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 3018 proven. 0 refuted. 0 times theorem prover too weak. 2317 trivial. 0 not checked. [2018-10-26 19:31:24,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:31:24,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-26 19:31:24,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 19:31:24,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 19:31:24,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:31:24,880 INFO L87 Difference]: Start difference. First operand 21819 states and 22733 transitions. Second operand 11 states. [2018-10-26 19:31:32,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:31:32,449 INFO L93 Difference]: Finished difference Result 44139 states and 45978 transitions. [2018-10-26 19:31:32,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-26 19:31:32,449 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1760 [2018-10-26 19:31:32,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:31:32,470 INFO L225 Difference]: With dead ends: 44139 [2018-10-26 19:31:32,470 INFO L226 Difference]: Without dead ends: 18326 [2018-10-26 19:31:32,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1789 GetRequests, 1769 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2018-10-26 19:31:32,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18326 states. [2018-10-26 19:31:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18326 to 16849. [2018-10-26 19:31:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16849 states. [2018-10-26 19:31:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16849 states to 16849 states and 17445 transitions. [2018-10-26 19:31:32,632 INFO L78 Accepts]: Start accepts. Automaton has 16849 states and 17445 transitions. Word has length 1760 [2018-10-26 19:31:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:31:32,633 INFO L481 AbstractCegarLoop]: Abstraction has 16849 states and 17445 transitions. [2018-10-26 19:31:32,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 19:31:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 16849 states and 17445 transitions. [2018-10-26 19:31:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1923 [2018-10-26 19:31:32,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:31:32,757 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 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, 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, 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, 4, 4, 3, 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] [2018-10-26 19:31:32,758 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:31:32,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:31:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1402703494, now seen corresponding path program 1 times [2018-10-26 19:31:32,759 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:31:32,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:31:32,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:32,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:32,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:34,303 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:31:34,675 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-26 19:31:35,015 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2018-10-26 19:31:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6567 backedges. 2737 proven. 243 refuted. 0 times theorem prover too weak. 3587 trivial. 0 not checked. [2018-10-26 19:31:38,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:31:38,867 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:31:38,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:39,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:31:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6567 backedges. 2737 proven. 0 refuted. 0 times theorem prover too weak. 3830 trivial. 0 not checked. [2018-10-26 19:31:41,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:31:41,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-10-26 19:31:41,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:31:41,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:31:41,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:31:41,739 INFO L87 Difference]: Start difference. First operand 16849 states and 17445 transitions. Second operand 10 states. [2018-10-26 19:31:50,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:31:50,133 INFO L93 Difference]: Finished difference Result 36012 states and 37232 transitions. [2018-10-26 19:31:50,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:31:50,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1922 [2018-10-26 19:31:50,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:31:50,149 INFO L225 Difference]: With dead ends: 36012 [2018-10-26 19:31:50,149 INFO L226 Difference]: Without dead ends: 19165 [2018-10-26 19:31:50,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1938 GetRequests, 1921 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-10-26 19:31:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19165 states. [2018-10-26 19:31:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19165 to 16849. [2018-10-26 19:31:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16849 states. [2018-10-26 19:31:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16849 states to 16849 states and 17437 transitions. [2018-10-26 19:31:50,288 INFO L78 Accepts]: Start accepts. Automaton has 16849 states and 17437 transitions. Word has length 1922 [2018-10-26 19:31:50,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:31:50,289 INFO L481 AbstractCegarLoop]: Abstraction has 16849 states and 17437 transitions. [2018-10-26 19:31:50,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:31:50,289 INFO L276 IsEmpty]: Start isEmpty. Operand 16849 states and 17437 transitions. [2018-10-26 19:31:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1954 [2018-10-26 19:31:50,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:31:50,324 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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] [2018-10-26 19:31:50,325 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:31:50,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:31:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash -125271930, now seen corresponding path program 1 times [2018-10-26 19:31:50,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:31:50,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:31:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:50,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:50,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:31:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:51,168 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-26 19:31:51,430 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-26 19:31:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7280 backedges. 2644 proven. 158 refuted. 0 times theorem prover too weak. 4478 trivial. 0 not checked. [2018-10-26 19:31:54,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:31:54,354 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:31:54,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:31:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:31:54,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:31:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7280 backedges. 2802 proven. 0 refuted. 0 times theorem prover too weak. 4478 trivial. 0 not checked. [2018-10-26 19:31:57,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:31:57,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-26 19:31:57,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:31:57,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:31:57,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:31:57,135 INFO L87 Difference]: Start difference. First operand 16849 states and 17437 transitions. Second operand 10 states. [2018-10-26 19:32:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:32:05,383 INFO L93 Difference]: Finished difference Result 43706 states and 45179 transitions. [2018-10-26 19:32:05,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 19:32:05,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1953 [2018-10-26 19:32:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:32:05,411 INFO L225 Difference]: With dead ends: 43706 [2018-10-26 19:32:05,411 INFO L226 Difference]: Without dead ends: 26859 [2018-10-26 19:32:05,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1983 GetRequests, 1963 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2018-10-26 19:32:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26859 states. [2018-10-26 19:32:05,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26859 to 21532. [2018-10-26 19:32:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21532 states. [2018-10-26 19:32:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21532 states to 21532 states and 22190 transitions. [2018-10-26 19:32:05,633 INFO L78 Accepts]: Start accepts. Automaton has 21532 states and 22190 transitions. Word has length 1953 [2018-10-26 19:32:05,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:32:05,633 INFO L481 AbstractCegarLoop]: Abstraction has 21532 states and 22190 transitions. [2018-10-26 19:32:05,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:32:05,634 INFO L276 IsEmpty]: Start isEmpty. Operand 21532 states and 22190 transitions. [2018-10-26 19:32:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2015 [2018-10-26 19:32:05,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:32:05,677 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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] [2018-10-26 19:32:05,677 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:32:05,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:32:05,678 INFO L82 PathProgramCache]: Analyzing trace with hash -584879221, now seen corresponding path program 1 times [2018-10-26 19:32:05,678 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:32:05,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:32:05,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:05,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:32:05,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:32:06,865 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:32:07,020 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:32:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7583 backedges. 3526 proven. 251 refuted. 0 times theorem prover too weak. 3806 trivial. 0 not checked. [2018-10-26 19:32:11,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:32:11,553 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:32:11,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:32:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:32:12,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:32:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7583 backedges. 4163 proven. 0 refuted. 0 times theorem prover too weak. 3420 trivial. 0 not checked. [2018-10-26 19:32:14,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:32:14,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-26 19:32:14,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:32:14,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:32:14,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:32:14,289 INFO L87 Difference]: Start difference. First operand 21532 states and 22190 transitions. Second operand 9 states. [2018-10-26 19:32:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:32:21,414 INFO L93 Difference]: Finished difference Result 46100 states and 47518 transitions. [2018-10-26 19:32:21,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:32:21,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2014 [2018-10-26 19:32:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:32:21,434 INFO L225 Difference]: With dead ends: 46100 [2018-10-26 19:32:21,434 INFO L226 Difference]: Without dead ends: 24570 [2018-10-26 19:32:21,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2033 GetRequests, 2017 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:32:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24570 states. [2018-10-26 19:32:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24570 to 23409. [2018-10-26 19:32:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23409 states. [2018-10-26 19:32:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23409 states to 23409 states and 23968 transitions. [2018-10-26 19:32:21,634 INFO L78 Accepts]: Start accepts. Automaton has 23409 states and 23968 transitions. Word has length 2014 [2018-10-26 19:32:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:32:21,634 INFO L481 AbstractCegarLoop]: Abstraction has 23409 states and 23968 transitions. [2018-10-26 19:32:21,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:32:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23409 states and 23968 transitions. [2018-10-26 19:32:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2326 [2018-10-26 19:32:21,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:32:21,672 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:32:21,673 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:32:21,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:32:21,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1502877066, now seen corresponding path program 1 times [2018-10-26 19:32:21,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:32:21,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:32:21,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:21,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:32:21,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:32:23,158 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 19:32:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9706 backedges. 4949 proven. 572 refuted. 0 times theorem prover too weak. 4185 trivial. 0 not checked. [2018-10-26 19:32:26,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:32:26,777 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:32:26,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:32:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:32:27,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:32:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9706 backedges. 5054 proven. 467 refuted. 0 times theorem prover too weak. 4185 trivial. 0 not checked. [2018-10-26 19:32:31,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:32:31,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2018-10-26 19:32:31,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:32:31,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:32:31,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:32:31,068 INFO L87 Difference]: Start difference. First operand 23409 states and 23968 transitions. Second operand 9 states. [2018-10-26 19:32:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:32:36,771 INFO L93 Difference]: Finished difference Result 48579 states and 49761 transitions. [2018-10-26 19:32:36,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 19:32:36,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2325 [2018-10-26 19:32:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:32:36,797 INFO L225 Difference]: With dead ends: 48579 [2018-10-26 19:32:36,797 INFO L226 Difference]: Without dead ends: 26162 [2018-10-26 19:32:36,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2338 GetRequests, 2325 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-10-26 19:32:36,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26162 states. [2018-10-26 19:32:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26162 to 24697. [2018-10-26 19:32:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24697 states. [2018-10-26 19:32:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24697 states to 24697 states and 25223 transitions. [2018-10-26 19:32:37,073 INFO L78 Accepts]: Start accepts. Automaton has 24697 states and 25223 transitions. Word has length 2325 [2018-10-26 19:32:37,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:32:37,074 INFO L481 AbstractCegarLoop]: Abstraction has 24697 states and 25223 transitions. [2018-10-26 19:32:37,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:32:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 24697 states and 25223 transitions. [2018-10-26 19:32:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2348 [2018-10-26 19:32:37,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:32:37,117 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:32:37,117 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:32:37,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:32:37,118 INFO L82 PathProgramCache]: Analyzing trace with hash -690427903, now seen corresponding path program 1 times [2018-10-26 19:32:37,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:32:37,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:32:37,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:37,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:32:37,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:32:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9866 backedges. 7621 proven. 4 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2018-10-26 19:32:43,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:32:43,935 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:32:43,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:32:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:32:44,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:32:45,357 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2018-10-26 19:32:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9866 backedges. 7378 proven. 247 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2018-10-26 19:32:50,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:32:50,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 12 [2018-10-26 19:32:50,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:32:50,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:32:50,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:32:50,417 INFO L87 Difference]: Start difference. First operand 24697 states and 25223 transitions. Second operand 12 states. [2018-10-26 19:32:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:32:56,359 INFO L93 Difference]: Finished difference Result 48576 states and 49623 transitions. [2018-10-26 19:32:56,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:32:56,359 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 2347 [2018-10-26 19:32:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:32:56,382 INFO L225 Difference]: With dead ends: 48576 [2018-10-26 19:32:56,382 INFO L226 Difference]: Without dead ends: 24871 [2018-10-26 19:32:56,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2362 GetRequests, 2348 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-10-26 19:32:56,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24871 states. [2018-10-26 19:32:56,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24871 to 23232. [2018-10-26 19:32:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23232 states. [2018-10-26 19:32:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23232 states to 23232 states and 23702 transitions. [2018-10-26 19:32:56,638 INFO L78 Accepts]: Start accepts. Automaton has 23232 states and 23702 transitions. Word has length 2347 [2018-10-26 19:32:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:32:56,640 INFO L481 AbstractCegarLoop]: Abstraction has 23232 states and 23702 transitions. [2018-10-26 19:32:56,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:32:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 23232 states and 23702 transitions. [2018-10-26 19:32:56,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2569 [2018-10-26 19:32:56,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:32:56,701 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:32:56,701 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:32:56,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:32:56,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1888161674, now seen corresponding path program 1 times [2018-10-26 19:32:56,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:32:56,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:32:56,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:56,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:32:56,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:32:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:33:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11978 backedges. 8715 proven. 1277 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-10-26 19:33:06,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:33:06,332 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:33:06,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:33:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:33:06,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:33:08,074 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-10-26 19:33:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11978 backedges. 8929 proven. 816 refuted. 0 times theorem prover too weak. 2233 trivial. 0 not checked. [2018-10-26 19:33:14,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:33:14,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-10-26 19:33:14,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 19:33:14,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 19:33:14,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:33:14,732 INFO L87 Difference]: Start difference. First operand 23232 states and 23702 transitions. Second operand 13 states. [2018-10-26 19:33:34,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:33:34,951 INFO L93 Difference]: Finished difference Result 50403 states and 51392 transitions. [2018-10-26 19:33:34,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-26 19:33:34,952 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2568 [2018-10-26 19:33:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:33:34,984 INFO L225 Difference]: With dead ends: 50403 [2018-10-26 19:33:34,984 INFO L226 Difference]: Without dead ends: 28163 [2018-10-26 19:33:35,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2602 GetRequests, 2574 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2018-10-26 19:33:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28163 states. [2018-10-26 19:33:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28163 to 24552. [2018-10-26 19:33:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24552 states. [2018-10-26 19:33:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24552 states to 24552 states and 25023 transitions. [2018-10-26 19:33:35,257 INFO L78 Accepts]: Start accepts. Automaton has 24552 states and 25023 transitions. Word has length 2568 [2018-10-26 19:33:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:33:35,259 INFO L481 AbstractCegarLoop]: Abstraction has 24552 states and 25023 transitions. [2018-10-26 19:33:35,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 19:33:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 24552 states and 25023 transitions. [2018-10-26 19:33:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2637 [2018-10-26 19:33:35,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:33:35,310 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:33:35,311 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:33:35,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:33:35,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1067427563, now seen corresponding path program 1 times [2018-10-26 19:33:35,311 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:33:35,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:33:35,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:33:35,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:33:35,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:33:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-26 19:33:36,439 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-26 19:33:36,443 INFO L168 Benchmark]: Toolchain (without parser) took 228488.97 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -581.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:33:36,444 INFO L168 Benchmark]: CDTParser took 0.25 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 19:33:36,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1087.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:33:36,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 315.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:33:36,447 INFO L168 Benchmark]: Boogie Preprocessor took 203.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:33:36,447 INFO L168 Benchmark]: RCFGBuilder took 6403.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 269.5 MB). Peak memory consumption was 269.5 MB. Max. memory is 7.1 GB. [2018-10-26 19:33:36,448 INFO L168 Benchmark]: TraceAbstraction took 220472.26 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -84.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-26 19:33:36,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1087.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 315.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6403.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 269.5 MB). Peak memory consumption was 269.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220472.26 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.0 GB in the end (delta: -84.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown