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_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:19:11,001 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:19:11,003 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:19:11,016 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:19:11,017 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:19:11,018 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:19:11,019 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:19:11,021 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:19:11,023 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:19:11,024 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:19:11,026 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:19:11,026 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:19:11,027 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:19:11,029 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:19:11,033 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:19:11,034 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:19:11,035 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:19:11,043 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:19:11,048 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:19:11,050 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:19:11,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:19:11,056 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:19:11,060 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:19:11,066 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:19:11,066 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:19:11,067 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:19:11,068 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:19:11,071 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:19:11,072 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:19:11,073 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:19:11,073 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:19:11,074 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:19:11,079 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:19:11,110 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:19:11,110 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:19:11,112 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:19:11,112 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:19:11,113 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:19:11,113 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:19:11,113 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:19:11,114 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:19:11,114 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:19:11,114 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:19:11,114 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:19:11,114 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:19:11,115 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:19:11,115 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:19:11,115 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:19:11,115 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:19:11,115 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:19:11,116 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:19:11,116 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:19:11,116 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:19:11,116 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:19:11,117 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:19:11,117 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:19:11,117 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:19:11,117 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:19:11,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:19:11,118 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:19:11,118 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:19:11,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:19:11,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:19:11,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:19:11,204 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:19:11,204 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:19:11,205 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-10-26 21:19:11,278 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1bb9951e6/d4ed480cd8af45b2b37a4eee3b4d153c/FLAG8fee1aa9d [2018-10-26 21:19:12,083 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:19:12,084 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-10-26 21:19:12,119 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1bb9951e6/d4ed480cd8af45b2b37a4eee3b4d153c/FLAG8fee1aa9d [2018-10-26 21:19:12,139 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1bb9951e6/d4ed480cd8af45b2b37a4eee3b4d153c [2018-10-26 21:19:12,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:19:12,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:19:12,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:19:12,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:19:12,161 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:19:12,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:19:12" (1/1) ... [2018-10-26 21:19:12,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68109397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:12, skipping insertion in model container [2018-10-26 21:19:12,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:19:12" (1/1) ... [2018-10-26 21:19:12,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:19:12,342 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:19:13,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:19:13,762 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:19:14,370 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:19:14,406 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:19:14,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14 WrapperNode [2018-10-26 21:19:14,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:19:14,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:19:14,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:19:14,408 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:19:14,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:14,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:19:15,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:19:15,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:19:15,141 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:19:15,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... [2018-10-26 21:19:15,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:19:15,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:19:15,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:19:15,547 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:19:15,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:19:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:19:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:19:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:19:24,320 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:19:24,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:19:24 BoogieIcfgContainer [2018-10-26 21:19:24,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:19:24,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:19:24,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:19:24,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:19:24,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:19:12" (1/3) ... [2018-10-26 21:19:24,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b569c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:19:24, skipping insertion in model container [2018-10-26 21:19:24,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:19:14" (2/3) ... [2018-10-26 21:19:24,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b569c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:19:24, skipping insertion in model container [2018-10-26 21:19:24,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:19:24" (3/3) ... [2018-10-26 21:19:24,330 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41_true-unreach-call.c [2018-10-26 21:19:24,340 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:19:24,350 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:19:24,368 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:19:24,421 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:19:24,422 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:19:24,422 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:19:24,422 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:19:24,423 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:19:24,423 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:19:24,423 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:19:24,423 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:19:24,423 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:19:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 21:19:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 21:19:24,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:19:24,485 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] [2018-10-26 21:19:24,488 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:19:24,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:19:24,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-26 21:19:24,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:19:24,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:19:24,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:24,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:24,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:19:24,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:19:24,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:19:24,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:19:24,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:19:24,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:19:24,884 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 21:19:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:19:40,561 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-26 21:19:40,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:19:40,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-26 21:19:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:19:40,604 INFO L225 Difference]: With dead ends: 3162 [2018-10-26 21:19:40,604 INFO L226 Difference]: Without dead ends: 2336 [2018-10-26 21:19:40,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:19:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-26 21:19:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2018-10-26 21:19:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2018-10-26 21:19:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3769 transitions. [2018-10-26 21:19:40,764 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3769 transitions. Word has length 53 [2018-10-26 21:19:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:19:40,764 INFO L481 AbstractCegarLoop]: Abstraction has 2336 states and 3769 transitions. [2018-10-26 21:19:40,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:19:40,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3769 transitions. [2018-10-26 21:19:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-26 21:19:40,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:19:40,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:19:40,771 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:19:40,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:19:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash -455382204, now seen corresponding path program 1 times [2018-10-26 21:19:40,772 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:19:40,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:19:40,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:40,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:40,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:19:41,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:19:41,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:19:41,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:19:41,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:19:41,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:19:41,407 INFO L87 Difference]: Start difference. First operand 2336 states and 3769 transitions. Second operand 6 states. [2018-10-26 21:19:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:19:57,548 INFO L93 Difference]: Finished difference Result 9183 states and 14416 transitions. [2018-10-26 21:19:57,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:19:57,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-26 21:19:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:19:57,585 INFO L225 Difference]: With dead ends: 9183 [2018-10-26 21:19:57,586 INFO L226 Difference]: Without dead ends: 6849 [2018-10-26 21:19:57,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:19:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2018-10-26 21:19:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6849. [2018-10-26 21:19:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6849 states. [2018-10-26 21:19:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9754 transitions. [2018-10-26 21:19:57,734 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9754 transitions. Word has length 130 [2018-10-26 21:19:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:19:57,734 INFO L481 AbstractCegarLoop]: Abstraction has 6849 states and 9754 transitions. [2018-10-26 21:19:57,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:19:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9754 transitions. [2018-10-26 21:19:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-26 21:19:57,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:19:57,741 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, 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] [2018-10-26 21:19:57,742 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:19:57,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:19:57,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1535905281, now seen corresponding path program 1 times [2018-10-26 21:19:57,742 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:19:57,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:19:57,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:57,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:57,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:58,279 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-26 21:19:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 151 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-26 21:19:58,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:19:58,608 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:19:58,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:58,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:19:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:19:58,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:19:58,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 21:19:58,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:19:58,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:19:58,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:19:58,960 INFO L87 Difference]: Start difference. First operand 6849 states and 9754 transitions. Second operand 7 states. [2018-10-26 21:20:00,413 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-26 21:20:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:18,432 INFO L93 Difference]: Finished difference Result 28768 states and 40519 transitions. [2018-10-26 21:20:18,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 21:20:18,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2018-10-26 21:20:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:18,525 INFO L225 Difference]: With dead ends: 28768 [2018-10-26 21:20:18,525 INFO L226 Difference]: Without dead ends: 18909 [2018-10-26 21:20:18,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:20:18,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2018-10-26 21:20:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 14367. [2018-10-26 21:20:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14367 states. [2018-10-26 21:20:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14367 states to 14367 states and 17896 transitions. [2018-10-26 21:20:19,191 INFO L78 Accepts]: Start accepts. Automaton has 14367 states and 17896 transitions. Word has length 232 [2018-10-26 21:20:19,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:19,192 INFO L481 AbstractCegarLoop]: Abstraction has 14367 states and 17896 transitions. [2018-10-26 21:20:19,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:20:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 14367 states and 17896 transitions. [2018-10-26 21:20:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-26 21:20:19,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:19,198 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:20:19,198 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:19,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash 603282787, now seen corresponding path program 1 times [2018-10-26 21:20:19,203 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:19,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:19,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:19,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:19,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:20:19,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:20:19,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:20:19,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:20:19,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:20:19,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:19,736 INFO L87 Difference]: Start difference. First operand 14367 states and 17896 transitions. Second operand 4 states. [2018-10-26 21:20:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:30,940 INFO L93 Difference]: Finished difference Result 49788 states and 63216 transitions. [2018-10-26 21:20:30,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:20:30,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 287 [2018-10-26 21:20:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:31,020 INFO L225 Difference]: With dead ends: 49788 [2018-10-26 21:20:31,021 INFO L226 Difference]: Without dead ends: 35423 [2018-10-26 21:20:31,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35423 states. [2018-10-26 21:20:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35423 to 35423. [2018-10-26 21:20:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35423 states. [2018-10-26 21:20:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35423 states to 35423 states and 43956 transitions. [2018-10-26 21:20:31,571 INFO L78 Accepts]: Start accepts. Automaton has 35423 states and 43956 transitions. Word has length 287 [2018-10-26 21:20:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:31,572 INFO L481 AbstractCegarLoop]: Abstraction has 35423 states and 43956 transitions. [2018-10-26 21:20:31,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:20:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 35423 states and 43956 transitions. [2018-10-26 21:20:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-26 21:20:31,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:31,582 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:20:31,582 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:31,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:31,582 INFO L82 PathProgramCache]: Analyzing trace with hash -673880654, now seen corresponding path program 1 times [2018-10-26 21:20:31,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:31,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:31,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:31,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:31,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 101 proven. 7 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-26 21:20:32,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:20:32,480 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:20:32,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:32,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:20:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-26 21:20:32,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:20:32,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 21:20:32,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:20:32,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:20:32,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:20:32,772 INFO L87 Difference]: Start difference. First operand 35423 states and 43956 transitions. Second operand 5 states. [2018-10-26 21:20:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:43,573 INFO L93 Difference]: Finished difference Result 140028 states and 174957 transitions. [2018-10-26 21:20:43,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:20:43,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2018-10-26 21:20:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:43,775 INFO L225 Difference]: With dead ends: 140028 [2018-10-26 21:20:43,775 INFO L226 Difference]: Without dead ends: 87268 [2018-10-26 21:20:43,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:20:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87268 states. [2018-10-26 21:20:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87268 to 78237. [2018-10-26 21:20:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78237 states. [2018-10-26 21:20:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78237 states to 78237 states and 88129 transitions. [2018-10-26 21:20:44,940 INFO L78 Accepts]: Start accepts. Automaton has 78237 states and 88129 transitions. Word has length 293 [2018-10-26 21:20:44,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:44,940 INFO L481 AbstractCegarLoop]: Abstraction has 78237 states and 88129 transitions. [2018-10-26 21:20:44,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:20:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand 78237 states and 88129 transitions. [2018-10-26 21:20:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-26 21:20:44,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:44,950 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:20:44,951 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:44,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:44,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1940907995, now seen corresponding path program 1 times [2018-10-26 21:20:44,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:44,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:44,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:44,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:44,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-26 21:20:45,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:20:45,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:20:45,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:20:45,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:20:45,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:45,221 INFO L87 Difference]: Start difference. First operand 78237 states and 88129 transitions. Second operand 4 states. [2018-10-26 21:20:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:53,226 INFO L93 Difference]: Finished difference Result 160232 states and 180145 transitions. [2018-10-26 21:20:53,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:20:53,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2018-10-26 21:20:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:53,369 INFO L225 Difference]: With dead ends: 160232 [2018-10-26 21:20:53,369 INFO L226 Difference]: Without dead ends: 81997 [2018-10-26 21:20:53,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81997 states. [2018-10-26 21:20:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81997 to 79741. [2018-10-26 21:20:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79741 states. [2018-10-26 21:20:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79741 states to 79741 states and 88520 transitions. [2018-10-26 21:20:54,159 INFO L78 Accepts]: Start accepts. Automaton has 79741 states and 88520 transitions. Word has length 332 [2018-10-26 21:20:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:54,160 INFO L481 AbstractCegarLoop]: Abstraction has 79741 states and 88520 transitions. [2018-10-26 21:20:54,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:20:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 79741 states and 88520 transitions. [2018-10-26 21:20:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-26 21:20:54,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:54,183 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:20:54,183 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:54,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash -124946050, now seen corresponding path program 1 times [2018-10-26 21:20:54,184 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:54,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:54,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:54,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:54,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-26 21:20:54,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:20:54,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:20:54,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:20:54,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:20:54,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:54,533 INFO L87 Difference]: Start difference. First operand 79741 states and 88520 transitions. Second operand 4 states. [2018-10-26 21:21:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:02,110 INFO L93 Difference]: Finished difference Result 161736 states and 179377 transitions. [2018-10-26 21:21:02,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:21:02,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 474 [2018-10-26 21:21:02,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:02,209 INFO L225 Difference]: With dead ends: 161736 [2018-10-26 21:21:02,209 INFO L226 Difference]: Without dead ends: 81997 [2018-10-26 21:21:02,237 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 21:21:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81997 states. [2018-10-26 21:21:02,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81997 to 80493. [2018-10-26 21:21:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80493 states. [2018-10-26 21:21:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80493 states to 80493 states and 88286 transitions. [2018-10-26 21:21:03,008 INFO L78 Accepts]: Start accepts. Automaton has 80493 states and 88286 transitions. Word has length 474 [2018-10-26 21:21:03,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:03,009 INFO L481 AbstractCegarLoop]: Abstraction has 80493 states and 88286 transitions. [2018-10-26 21:21:03,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:21:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 80493 states and 88286 transitions. [2018-10-26 21:21:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-10-26 21:21:03,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:03,030 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:03,030 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:03,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash 370586703, now seen corresponding path program 1 times [2018-10-26 21:21:03,031 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:21:03,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:21:03,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:03,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:03,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-26 21:21:03,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:03,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:21:03,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:21:03,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:21:03,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:21:03,503 INFO L87 Difference]: Start difference. First operand 80493 states and 88286 transitions. Second operand 3 states. [2018-10-26 21:21:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:08,331 INFO L93 Difference]: Finished difference Result 177528 states and 194883 transitions. [2018-10-26 21:21:08,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:21:08,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 480 [2018-10-26 21:21:08,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:08,464 INFO L225 Difference]: With dead ends: 177528 [2018-10-26 21:21:08,465 INFO L226 Difference]: Without dead ends: 97037 [2018-10-26 21:21:08,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:21:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97037 states. [2018-10-26 21:21:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97037 to 94781. [2018-10-26 21:21:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94781 states. [2018-10-26 21:21:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94781 states to 94781 states and 103211 transitions. [2018-10-26 21:21:10,317 INFO L78 Accepts]: Start accepts. Automaton has 94781 states and 103211 transitions. Word has length 480 [2018-10-26 21:21:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:10,318 INFO L481 AbstractCegarLoop]: Abstraction has 94781 states and 103211 transitions. [2018-10-26 21:21:10,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:21:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 94781 states and 103211 transitions. [2018-10-26 21:21:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-10-26 21:21:10,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:10,337 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:10,337 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:10,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1189729698, now seen corresponding path program 1 times [2018-10-26 21:21:10,338 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:21:10,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:21:10,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:10,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:10,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:10,823 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 21:21:11,168 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-26 21:21:11,529 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-10-26 21:21:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-10-26 21:21:11,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:21:11,942 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:21:11,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:12,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-10-26 21:21:12,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:21:12,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2018-10-26 21:21:12,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:21:12,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:21:12,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:21:12,354 INFO L87 Difference]: Start difference. First operand 94781 states and 103211 transitions. Second operand 8 states. [2018-10-26 21:21:27,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:27,453 INFO L93 Difference]: Finished difference Result 224904 states and 244176 transitions. [2018-10-26 21:21:27,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 21:21:27,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 582 [2018-10-26 21:21:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:27,631 INFO L225 Difference]: With dead ends: 224904 [2018-10-26 21:21:27,631 INFO L226 Difference]: Without dead ends: 130125 [2018-10-26 21:21:27,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 582 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:21:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130125 states. [2018-10-26 21:21:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130125 to 125612. [2018-10-26 21:21:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125612 states. [2018-10-26 21:21:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125612 states to 125612 states and 134074 transitions. [2018-10-26 21:21:30,298 INFO L78 Accepts]: Start accepts. Automaton has 125612 states and 134074 transitions. Word has length 582 [2018-10-26 21:21:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:30,299 INFO L481 AbstractCegarLoop]: Abstraction has 125612 states and 134074 transitions. [2018-10-26 21:21:30,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:21:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 125612 states and 134074 transitions. [2018-10-26 21:21:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2018-10-26 21:21:30,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:30,334 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:21:30,334 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:30,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:30,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1462200261, now seen corresponding path program 1 times [2018-10-26 21:21:30,335 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:21:30,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:21:30,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:30,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:30,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 650 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-10-26 21:21:30,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:30,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 21:21:30,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:21:30,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:21:30,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:21:30,920 INFO L87 Difference]: Start difference. First operand 125612 states and 134074 transitions. Second operand 6 states. [2018-10-26 21:21:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:40,310 INFO L93 Difference]: Finished difference Result 269238 states and 287814 transitions. [2018-10-26 21:21:40,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:21:40,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 588 [2018-10-26 21:21:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:40,475 INFO L225 Difference]: With dead ends: 269238 [2018-10-26 21:21:40,475 INFO L226 Difference]: Without dead ends: 143628 [2018-10-26 21:21:40,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:21:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143628 states. [2018-10-26 21:21:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143628 to 139900. [2018-10-26 21:21:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139900 states. [2018-10-26 21:21:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139900 states to 139900 states and 147423 transitions. [2018-10-26 21:21:43,150 INFO L78 Accepts]: Start accepts. Automaton has 139900 states and 147423 transitions. Word has length 588 [2018-10-26 21:21:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:43,151 INFO L481 AbstractCegarLoop]: Abstraction has 139900 states and 147423 transitions. [2018-10-26 21:21:43,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:21:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 139900 states and 147423 transitions. [2018-10-26 21:21:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-10-26 21:21:43,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:43,175 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-10-26 21:21:43,175 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:43,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1747693829, now seen corresponding path program 1 times [2018-10-26 21:21:43,176 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:21:43,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:21:43,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:43,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:43,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-10-26 21:21:43,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:43,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:21:43,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:21:43,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:21:43,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:43,646 INFO L87 Difference]: Start difference. First operand 139900 states and 147423 transitions. Second operand 4 states. [2018-10-26 21:21:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:51,043 INFO L93 Difference]: Finished difference Result 280550 states and 295584 transitions. [2018-10-26 21:21:51,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:21:51,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 592 [2018-10-26 21:21:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:51,198 INFO L225 Difference]: With dead ends: 280550 [2018-10-26 21:21:51,198 INFO L226 Difference]: Without dead ends: 137642 [2018-10-26 21:21:51,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137642 states. [2018-10-26 21:21:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137642 to 133130. [2018-10-26 21:21:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133130 states. [2018-10-26 21:21:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133130 states to 133130 states and 137913 transitions. [2018-10-26 21:21:56,965 INFO L78 Accepts]: Start accepts. Automaton has 133130 states and 137913 transitions. Word has length 592 [2018-10-26 21:21:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:56,965 INFO L481 AbstractCegarLoop]: Abstraction has 133130 states and 137913 transitions. [2018-10-26 21:21:56,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:21:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 133130 states and 137913 transitions. [2018-10-26 21:21:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-10-26 21:21:56,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:56,976 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:21:56,977 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:56,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash -665011732, now seen corresponding path program 1 times [2018-10-26 21:21:56,977 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:21:56,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:21:56,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:56,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:56,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-10-26 21:21:57,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:57,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:21:57,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:21:57,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:21:57,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:57,621 INFO L87 Difference]: Start difference. First operand 133130 states and 137913 transitions. Second operand 4 states. [2018-10-26 21:22:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:22:09,337 INFO L93 Difference]: Finished difference Result 266258 states and 275850 transitions. [2018-10-26 21:22:09,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:22:09,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 603 [2018-10-26 21:22:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:22:09,483 INFO L225 Difference]: With dead ends: 266258 [2018-10-26 21:22:09,483 INFO L226 Difference]: Without dead ends: 133882 [2018-10-26 21:22:09,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:22:09,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133882 states. [2018-10-26 21:22:10,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133882 to 127114. [2018-10-26 21:22:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127114 states. [2018-10-26 21:22:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127114 states to 127114 states and 130731 transitions. [2018-10-26 21:22:11,083 INFO L78 Accepts]: Start accepts. Automaton has 127114 states and 130731 transitions. Word has length 603 [2018-10-26 21:22:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:22:11,084 INFO L481 AbstractCegarLoop]: Abstraction has 127114 states and 130731 transitions. [2018-10-26 21:22:11,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:22:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 127114 states and 130731 transitions. [2018-10-26 21:22:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-10-26 21:22:11,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:22:11,095 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:22:11,095 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:22:11,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:22:11,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1504455587, now seen corresponding path program 1 times [2018-10-26 21:22:11,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:22:11,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:22:11,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:22:11,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:22:11,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:22:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:22:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2018-10-26 21:22:11,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:22:11,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:22:11,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:22:11,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:22:11,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:22:11,962 INFO L87 Difference]: Start difference. First operand 127114 states and 130731 transitions. Second operand 5 states. [2018-10-26 21:22:23,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:22:23,887 INFO L93 Difference]: Finished difference Result 365546 states and 376003 transitions. [2018-10-26 21:22:23,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:22:23,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 634 [2018-10-26 21:22:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:22:24,144 INFO L225 Difference]: With dead ends: 365546 [2018-10-26 21:22:24,145 INFO L226 Difference]: Without dead ends: 239186 [2018-10-26 21:22:24,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:22:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239186 states. [2018-10-26 21:22:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239186 to 179776. [2018-10-26 21:22:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179776 states. [2018-10-26 21:22:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179776 states to 179776 states and 184327 transitions. [2018-10-26 21:22:26,653 INFO L78 Accepts]: Start accepts. Automaton has 179776 states and 184327 transitions. Word has length 634 [2018-10-26 21:22:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:22:26,654 INFO L481 AbstractCegarLoop]: Abstraction has 179776 states and 184327 transitions. [2018-10-26 21:22:26,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:22:26,654 INFO L276 IsEmpty]: Start isEmpty. Operand 179776 states and 184327 transitions. [2018-10-26 21:22:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2018-10-26 21:22:26,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:22:26,673 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:22:26,673 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:22:26,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:22:26,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1685967853, now seen corresponding path program 1 times [2018-10-26 21:22:26,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:22:26,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:22:26,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:22:26,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:22:26,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:22:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:22:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-10-26 21:22:27,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:22:27,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:22:27,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:22:27,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:22:27,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:22:27,334 INFO L87 Difference]: Start difference. First operand 179776 states and 184327 transitions. Second operand 4 states. [2018-10-26 21:22:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:22:34,745 INFO L93 Difference]: Finished difference Result 342977 states and 351972 transitions. [2018-10-26 21:22:34,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:22:34,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 657 [2018-10-26 21:22:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:22:34,932 INFO L225 Difference]: With dead ends: 342977 [2018-10-26 21:22:34,933 INFO L226 Difference]: Without dead ends: 163955 [2018-10-26 21:22:35,016 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 21:22:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163955 states. [2018-10-26 21:22:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163955 to 144403. [2018-10-26 21:22:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144403 states. [2018-10-26 21:22:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144403 states to 144403 states and 147207 transitions. [2018-10-26 21:22:37,202 INFO L78 Accepts]: Start accepts. Automaton has 144403 states and 147207 transitions. Word has length 657 [2018-10-26 21:22:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:22:37,203 INFO L481 AbstractCegarLoop]: Abstraction has 144403 states and 147207 transitions. [2018-10-26 21:22:37,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:22:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 144403 states and 147207 transitions. [2018-10-26 21:22:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-10-26 21:22:37,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:22:37,268 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:22:37,269 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:22:37,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:22:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash 942381596, now seen corresponding path program 1 times [2018-10-26 21:22:37,269 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:22:37,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:22:37,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:22:37,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:22:37,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:22:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:22:38,345 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-26 21:22:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 153 proven. 382 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-26 21:22:39,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:22:39,716 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:22:39,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:22:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:22:39,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:22:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 203 proven. 332 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-26 21:22:41,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:22:41,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 21:22:41,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:22:41,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:22:41,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:22:41,300 INFO L87 Difference]: Start difference. First operand 144403 states and 147207 transitions. Second operand 7 states. [2018-10-26 21:22:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:22:57,066 INFO L93 Difference]: Finished difference Result 352727 states and 359889 transitions. [2018-10-26 21:22:57,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:22:57,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2018-10-26 21:22:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:22:57,294 INFO L225 Difference]: With dead ends: 352727 [2018-10-26 21:22:57,294 INFO L226 Difference]: Without dead ends: 214342 [2018-10-26 21:22:57,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 1035 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:22:57,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214342 states. Received shutdown request... [2018-10-26 21:22:58,188 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:22:58,192 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:22:58,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:22:58 BoogieIcfgContainer [2018-10-26 21:22:58,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:22:58,193 INFO L168 Benchmark]: Toolchain (without parser) took 226040.30 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-10-26 21:22:58,195 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:22:58,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2251.61 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. [2018-10-26 21:22:58,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 733.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -992.1 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:22:58,198 INFO L168 Benchmark]: Boogie Preprocessor took 405.71 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2018-10-26 21:22:58,201 INFO L168 Benchmark]: RCFGBuilder took 8774.07 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 228.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -184.8 MB). Peak memory consumption was 655.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:22:58,202 INFO L168 Benchmark]: TraceAbstraction took 213869.70 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -203.4 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-26 21:22:58,211 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2251.61 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 733.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -992.1 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 405.71 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8774.07 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 228.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -184.8 MB). Peak memory consumption was 655.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213869.70 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -203.4 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 168]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 168). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 213.7s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 175.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8653 SDtfs, 38439 SDslu, 1233 SDs, 0 SdLazy, 80598 SolverSat, 14638 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 137.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2229 GetRequests, 2161 SyntacticMatches, 17 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179776occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 23.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 118072 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 9118 NumberOfCodeBlocks, 9118 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 9099 ConstructedInterpolants, 0 QuantifiedInterpolants, 15984377 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2605 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 7886/8624 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown