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/Problem12_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:10:39,978 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:10:39,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:10:39,992 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:10:39,992 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:10:39,993 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:10:39,994 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:10:39,996 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:10:39,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:10:39,999 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:10:40,000 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:10:40,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:10:40,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:10:40,002 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:10:40,003 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:10:40,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:10:40,005 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:10:40,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:10:40,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:10:40,010 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:10:40,011 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:10:40,012 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:10:40,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:10:40,015 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:10:40,015 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:10:40,016 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:10:40,017 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:10:40,018 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:10:40,019 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:10:40,020 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:10:40,020 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:10:40,021 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:10:40,023 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 [2018-10-24 16:10:40,038 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:10:40,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:10:40,039 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:10:40,039 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:10:40,040 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:10:40,040 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:10:40,040 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:10:40,041 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:10:40,041 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:10:40,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:10:40,041 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:10:40,041 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:10:40,041 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:10:40,042 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:10:40,042 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:10:40,042 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:10:40,042 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:10:40,042 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:10:40,043 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:10:40,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:10:40,043 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:10:40,043 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:10:40,043 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:10:40,044 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:10:40,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:10:40,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:10:40,044 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:10:40,044 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:10:40,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:10:40,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:10:40,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:10:40,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:10:40,110 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:10:40,111 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-24 16:10:40,174 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/11fb6eada/f4a68ee37ba0438daad75b3ddd0dd2ef/FLAGc222460dc [2018-10-24 16:10:40,945 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:10:40,946 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-24 16:10:40,980 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/11fb6eada/f4a68ee37ba0438daad75b3ddd0dd2ef/FLAGc222460dc [2018-10-24 16:10:41,000 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/11fb6eada/f4a68ee37ba0438daad75b3ddd0dd2ef [2018-10-24 16:10:41,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:10:41,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:10:41,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:10:41,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:10:41,021 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:10:41,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:10:41" (1/1) ... [2018-10-24 16:10:41,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8b3439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:41, skipping insertion in model container [2018-10-24 16:10:41,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:10:41" (1/1) ... [2018-10-24 16:10:41,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:10:41,207 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:10:42,689 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:10:42,693 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:10:43,272 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:10:43,309 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:10:43,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43 WrapperNode [2018-10-24 16:10:43,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:10:43,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:10:43,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:10:43,311 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:10:43,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:43,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:10:44,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:10:44,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:10:44,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:10:44,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (1/1) ... [2018-10-24 16:10:44,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:10:44,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:10:44,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:10:44,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:10:44,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (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 [2018-10-24 16:10:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:10:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:10:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:10:53,567 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:10:53,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:53 BoogieIcfgContainer [2018-10-24 16:10:53,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:10:53,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:10:53,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:10:53,572 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:10:53,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:10:41" (1/3) ... [2018-10-24 16:10:53,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287d0549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:53, skipping insertion in model container [2018-10-24 16:10:53,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:43" (2/3) ... [2018-10-24 16:10:53,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287d0549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:53, skipping insertion in model container [2018-10-24 16:10:53,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:53" (3/3) ... [2018-10-24 16:10:53,576 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label12_true-unreach-call.c [2018-10-24 16:10:53,585 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:10:53,594 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:10:53,608 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:10:53,658 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:10:53,659 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:10:53,659 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:10:53,659 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:10:53,660 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:10:53,660 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:10:53,660 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:10:53,660 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:10:53,660 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:10:53,700 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:10:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 16:10:53,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:53,720 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:53,724 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:53,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:53,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-24 16:10:53,733 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:53,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:53,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:53,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:53,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:54,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:54,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:10:54,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:10:54,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:10:54,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:10:54,240 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:11:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:13,290 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 16:11:13,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:11:13,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-24 16:11:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:13,331 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 16:11:13,332 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 16:11:13,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 16:11:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 16:11:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 16:11:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-24 16:11:13,516 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 59 [2018-10-24 16:11:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:13,517 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-24 16:11:13,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:11:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-24 16:11:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 16:11:13,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:13,529 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:13,530 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:13,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:13,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1104251190, now seen corresponding path program 1 times [2018-10-24 16:11:13,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:13,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:13,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:13,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:13,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:14,068 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 16:11:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:11:14,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:11:14,236 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-24 16:11:14,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:14,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:11:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:11:14,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:11:14,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:11:14,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:11:14,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:11:14,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:11:14,496 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 7 states. [2018-10-24 16:11:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:50,748 INFO L93 Difference]: Finished difference Result 22720 states and 38802 transitions. [2018-10-24 16:11:50,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:11:50,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2018-10-24 16:11:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:50,830 INFO L225 Difference]: With dead ends: 22720 [2018-10-24 16:11:50,830 INFO L226 Difference]: Without dead ends: 18143 [2018-10-24 16:11:50,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:11:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2018-10-24 16:11:51,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 9087. [2018-10-24 16:11:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9087 states. [2018-10-24 16:11:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9087 states to 9087 states and 11085 transitions. [2018-10-24 16:11:51,064 INFO L78 Accepts]: Start accepts. Automaton has 9087 states and 11085 transitions. Word has length 131 [2018-10-24 16:11:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:51,064 INFO L481 AbstractCegarLoop]: Abstraction has 9087 states and 11085 transitions. [2018-10-24 16:11:51,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:11:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9087 states and 11085 transitions. [2018-10-24 16:11:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-24 16:11:51,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:51,073 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:11:51,073 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:51,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:51,073 INFO L82 PathProgramCache]: Analyzing trace with hash -737947407, now seen corresponding path program 1 times [2018-10-24 16:11:51,074 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:51,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:51,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:51,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:51,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:51,792 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-24 16:11:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-24 16:11:52,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:52,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:11:52,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:11:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:11:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:11:52,099 INFO L87 Difference]: Start difference. First operand 9087 states and 11085 transitions. Second operand 6 states. [2018-10-24 16:12:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:04,942 INFO L93 Difference]: Finished difference Result 22685 states and 27974 transitions. [2018-10-24 16:12:04,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:12:04,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2018-10-24 16:12:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:04,995 INFO L225 Difference]: With dead ends: 22685 [2018-10-24 16:12:04,996 INFO L226 Difference]: Without dead ends: 12095 [2018-10-24 16:12:05,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:12:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12095 states. [2018-10-24 16:12:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12095 to 12095. [2018-10-24 16:12:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12095 states. [2018-10-24 16:12:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12095 states to 12095 states and 14681 transitions. [2018-10-24 16:12:05,247 INFO L78 Accepts]: Start accepts. Automaton has 12095 states and 14681 transitions. Word has length 274 [2018-10-24 16:12:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:05,248 INFO L481 AbstractCegarLoop]: Abstraction has 12095 states and 14681 transitions. [2018-10-24 16:12:05,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:12:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 12095 states and 14681 transitions. [2018-10-24 16:12:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-24 16:12:05,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:05,254 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:12:05,254 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:05,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:05,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1911810078, now seen corresponding path program 1 times [2018-10-24 16:12:05,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:05,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:05,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:05,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:05,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 16:12:05,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:05,736 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 [2018-10-24 16:12:05,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:06,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:12:06,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:12:06,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:12:06,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:06,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:06,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:06,107 INFO L87 Difference]: Start difference. First operand 12095 states and 14681 transitions. Second operand 4 states. [2018-10-24 16:12:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:12,585 INFO L93 Difference]: Finished difference Result 42296 states and 52431 transitions. [2018-10-24 16:12:12,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:12,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 283 [2018-10-24 16:12:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:12,649 INFO L225 Difference]: With dead ends: 42296 [2018-10-24 16:12:12,649 INFO L226 Difference]: Without dead ends: 30203 [2018-10-24 16:12:12,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30203 states. [2018-10-24 16:12:12,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30203 to 18863. [2018-10-24 16:12:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18863 states. [2018-10-24 16:12:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18863 states to 18863 states and 22730 transitions. [2018-10-24 16:12:13,013 INFO L78 Accepts]: Start accepts. Automaton has 18863 states and 22730 transitions. Word has length 283 [2018-10-24 16:12:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:13,014 INFO L481 AbstractCegarLoop]: Abstraction has 18863 states and 22730 transitions. [2018-10-24 16:12:13,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 18863 states and 22730 transitions. [2018-10-24 16:12:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-24 16:12:13,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:13,024 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:13,025 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:13,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:13,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2082331721, now seen corresponding path program 1 times [2018-10-24 16:12:13,025 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:13,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:13,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:13,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:13,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-24 16:12:13,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:13,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:13,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:13,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:13,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:13,487 INFO L87 Difference]: Start difference. First operand 18863 states and 22730 transitions. Second operand 4 states. [2018-10-24 16:12:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:23,305 INFO L93 Difference]: Finished difference Result 71564 states and 86965 transitions. [2018-10-24 16:12:23,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:23,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2018-10-24 16:12:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:23,390 INFO L225 Difference]: With dead ends: 71564 [2018-10-24 16:12:23,390 INFO L226 Difference]: Without dead ends: 52703 [2018-10-24 16:12:23,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52703 states. [2018-10-24 16:12:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52703 to 52703. [2018-10-24 16:12:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52703 states. [2018-10-24 16:12:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52703 states to 52703 states and 62446 transitions. [2018-10-24 16:12:24,040 INFO L78 Accepts]: Start accepts. Automaton has 52703 states and 62446 transitions. Word has length 357 [2018-10-24 16:12:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:24,040 INFO L481 AbstractCegarLoop]: Abstraction has 52703 states and 62446 transitions. [2018-10-24 16:12:24,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 52703 states and 62446 transitions. [2018-10-24 16:12:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-24 16:12:24,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:24,055 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:24,056 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:24,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:24,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1518724673, now seen corresponding path program 1 times [2018-10-24 16:12:24,056 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:24,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:24,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:24,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:24,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:12:24,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:24,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:12:24,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:12:24,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:12:24,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:12:24,380 INFO L87 Difference]: Start difference. First operand 52703 states and 62446 transitions. Second operand 3 states. [2018-10-24 16:12:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:31,329 INFO L93 Difference]: Finished difference Result 118188 states and 139932 transitions. [2018-10-24 16:12:31,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:12:31,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2018-10-24 16:12:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:31,447 INFO L225 Difference]: With dead ends: 118188 [2018-10-24 16:12:31,447 INFO L226 Difference]: Without dead ends: 65487 [2018-10-24 16:12:31,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:12:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65487 states. [2018-10-24 16:12:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65487 to 63231. [2018-10-24 16:12:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63231 states. [2018-10-24 16:12:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63231 states to 63231 states and 72251 transitions. [2018-10-24 16:12:32,188 INFO L78 Accepts]: Start accepts. Automaton has 63231 states and 72251 transitions. Word has length 361 [2018-10-24 16:12:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:32,188 INFO L481 AbstractCegarLoop]: Abstraction has 63231 states and 72251 transitions. [2018-10-24 16:12:32,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:12:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 63231 states and 72251 transitions. [2018-10-24 16:12:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-24 16:12:32,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:32,206 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:32,206 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:32,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:32,206 INFO L82 PathProgramCache]: Analyzing trace with hash -632950127, now seen corresponding path program 1 times [2018-10-24 16:12:32,207 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:32,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:32,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:32,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:32,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:12:32,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:32,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:32,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:12:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:12:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:12:32,619 INFO L87 Difference]: Start difference. First operand 63231 states and 72251 transitions. Second operand 5 states. [2018-10-24 16:12:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:47,587 INFO L93 Difference]: Finished difference Result 188166 states and 214928 transitions. [2018-10-24 16:12:47,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:12:47,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2018-10-24 16:12:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:47,745 INFO L225 Difference]: With dead ends: 188166 [2018-10-24 16:12:47,745 INFO L226 Difference]: Without dead ends: 124937 [2018-10-24 16:12:47,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:12:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124937 states. [2018-10-24 16:12:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124937 to 101625. [2018-10-24 16:12:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101625 states. [2018-10-24 16:12:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101625 states to 101625 states and 111951 transitions. [2018-10-24 16:12:48,946 INFO L78 Accepts]: Start accepts. Automaton has 101625 states and 111951 transitions. Word has length 393 [2018-10-24 16:12:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:48,947 INFO L481 AbstractCegarLoop]: Abstraction has 101625 states and 111951 transitions. [2018-10-24 16:12:48,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:12:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 101625 states and 111951 transitions. [2018-10-24 16:12:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-10-24 16:12:49,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:49,575 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:49,575 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:49,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2084166946, now seen corresponding path program 1 times [2018-10-24 16:12:49,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:49,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:49,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:49,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:49,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:12:50,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:50,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:50,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:50,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:50,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:50,780 INFO L87 Difference]: Start difference. First operand 101625 states and 111951 transitions. Second operand 4 states. [2018-10-24 16:12:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:58,992 INFO L93 Difference]: Finished difference Result 251375 states and 278215 transitions. [2018-10-24 16:12:58,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:58,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 744 [2018-10-24 16:12:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:59,124 INFO L225 Difference]: With dead ends: 251375 [2018-10-24 16:12:59,124 INFO L226 Difference]: Without dead ends: 135439 [2018-10-24 16:12:59,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135439 states. [2018-10-24 16:13:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135439 to 121151. [2018-10-24 16:13:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121151 states. [2018-10-24 16:13:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121151 states to 121151 states and 132248 transitions. [2018-10-24 16:13:00,239 INFO L78 Accepts]: Start accepts. Automaton has 121151 states and 132248 transitions. Word has length 744 [2018-10-24 16:13:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:00,240 INFO L481 AbstractCegarLoop]: Abstraction has 121151 states and 132248 transitions. [2018-10-24 16:13:00,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 121151 states and 132248 transitions. [2018-10-24 16:13:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2018-10-24 16:13:00,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:00,273 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:00,274 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:00,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:00,274 INFO L82 PathProgramCache]: Analyzing trace with hash 134317932, now seen corresponding path program 1 times [2018-10-24 16:13:00,274 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:00,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:00,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:00,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:00,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-10-24 16:13:00,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:00,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:00,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:00,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:00,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:00,870 INFO L87 Difference]: Start difference. First operand 121151 states and 132248 transitions. Second operand 4 states. [2018-10-24 16:13:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:09,064 INFO L93 Difference]: Finished difference Result 262604 states and 287433 transitions. [2018-10-24 16:13:09,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:13:09,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 773 [2018-10-24 16:13:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:09,211 INFO L225 Difference]: With dead ends: 262604 [2018-10-24 16:13:09,211 INFO L226 Difference]: Without dead ends: 142207 [2018-10-24 16:13:09,274 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 [2018-10-24 16:13:09,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142207 states. [2018-10-24 16:13:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142207 to 136943. [2018-10-24 16:13:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136943 states. [2018-10-24 16:13:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136943 states to 136943 states and 147493 transitions. [2018-10-24 16:13:10,470 INFO L78 Accepts]: Start accepts. Automaton has 136943 states and 147493 transitions. Word has length 773 [2018-10-24 16:13:10,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:10,471 INFO L481 AbstractCegarLoop]: Abstraction has 136943 states and 147493 transitions. [2018-10-24 16:13:10,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 136943 states and 147493 transitions. [2018-10-24 16:13:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-10-24 16:13:10,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:10,521 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:10,521 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:10,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:10,522 INFO L82 PathProgramCache]: Analyzing trace with hash 885046507, now seen corresponding path program 1 times [2018-10-24 16:13:10,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:10,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:10,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:10,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:10,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:13:12,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:12,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:12,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:12,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:12,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:12,171 INFO L87 Difference]: Start difference. First operand 136943 states and 147493 transitions. Second operand 4 states. [2018-10-24 16:13:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:23,683 INFO L93 Difference]: Finished difference Result 296443 states and 318460 transitions. [2018-10-24 16:13:23,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:13:23,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 823 [2018-10-24 16:13:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:23,906 INFO L225 Difference]: With dead ends: 296443 [2018-10-24 16:13:23,906 INFO L226 Difference]: Without dead ends: 158748 [2018-10-24 16:13:23,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158748 states. [2018-10-24 16:13:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158748 to 151228. [2018-10-24 16:13:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151228 states. [2018-10-24 16:13:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151228 states to 151228 states and 160934 transitions. [2018-10-24 16:13:26,346 INFO L78 Accepts]: Start accepts. Automaton has 151228 states and 160934 transitions. Word has length 823 [2018-10-24 16:13:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:26,348 INFO L481 AbstractCegarLoop]: Abstraction has 151228 states and 160934 transitions. [2018-10-24 16:13:26,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 151228 states and 160934 transitions. [2018-10-24 16:13:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2018-10-24 16:13:26,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:26,399 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:26,399 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:26,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:26,399 INFO L82 PathProgramCache]: Analyzing trace with hash 904075422, now seen corresponding path program 1 times [2018-10-24 16:13:26,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:26,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:26,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:26,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:26,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 607 proven. 57 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:13:27,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:27,390 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 [2018-10-24 16:13:27,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:27,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:13:28,142 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2018-10-24 16:13:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 628 proven. 36 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:13:29,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:13:29,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-24 16:13:29,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:13:29,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:13:29,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:13:29,597 INFO L87 Difference]: Start difference. First operand 151228 states and 160934 transitions. Second operand 8 states. [2018-10-24 16:14:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:08,514 INFO L93 Difference]: Finished difference Result 364866 states and 389408 transitions. [2018-10-24 16:14:08,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 16:14:08,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 848 [2018-10-24 16:14:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:08,516 INFO L225 Difference]: With dead ends: 364866 [2018-10-24 16:14:08,516 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:14:08,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-10-24 16:14:08,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:14:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:14:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:14:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:14:08,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 848 [2018-10-24 16:14:08,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:08,582 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:14:08,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:14:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:14:08,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:14:08,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:14:08,709 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:08,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:09,042 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:09,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:09,853 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:09,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:09,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:10,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:10,045 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:10,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:10,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:10,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:10,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:10,649 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 635 DAG size of output: 468 [2018-10-24 16:14:10,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,889 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:11,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:12,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:12,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:12,249 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:12,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:12,405 WARN L179 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 635 DAG size of output: 468 [2018-10-24 16:14:12,480 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:12,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,022 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,530 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,614 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:13,995 WARN L179 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 635 DAG size of output: 468 [2018-10-24 16:14:14,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:14,979 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:15,021 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:15,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:15,150 WARN L179 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 635 DAG size of output: 468 [2018-10-24 16:14:15,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:15,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:15,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:15,728 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,519 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:14:16,605 WARN L179 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 635 DAG size of output: 468 [2018-10-24 16:14:20,595 WARN L179 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 452 DAG size of output: 85 [2018-10-24 16:14:24,665 WARN L179 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 452 DAG size of output: 85 [2018-10-24 16:14:28,668 WARN L179 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 452 DAG size of output: 85 Received shutdown request... [2018-10-24 16:14:30,295 WARN L187 SmtUtils]: Removed 179 from assertion stack [2018-10-24 16:14:30,296 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:14:30,297 INFO L168 Benchmark]: Toolchain (without parser) took 229283.27 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:14:30,298 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:14:30,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2293.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:30,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 691.36 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:30,300 INFO L168 Benchmark]: Boogie Preprocessor took 342.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:30,301 INFO L168 Benchmark]: RCFGBuilder took 9223.12 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 217.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -170.8 MB). Peak memory consumption was 631.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:30,302 INFO L168 Benchmark]: TraceAbstraction took 216727.34 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -597.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:14:30,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2293.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 691.36 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 342.01 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9223.12 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 217.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -170.8 MB). Peak memory consumption was 631.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216727.34 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -597.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 186]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 452. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown