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/Problem19_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:06:18,142 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:06:18,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:06:18,161 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:06:18,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:06:18,163 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:06:18,164 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:06:18,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:06:18,176 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:06:18,180 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:06:18,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:06:18,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:06:18,183 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:06:18,192 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:06:18,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:06:18,194 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:06:18,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:06:18,198 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:06:18,201 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:06:18,202 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:06:18,205 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:06:18,206 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:06:18,208 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:06:18,208 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:06:18,210 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:06:18,211 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:06:18,213 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:06:18,214 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:06:18,214 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:06:18,218 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:06:18,219 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:06:18,220 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 22:06:18,223 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 22:06:18,250 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:06:18,250 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:06:18,251 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:06:18,254 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:06:18,254 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:06:18,255 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:06:18,255 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:06:18,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:06:18,255 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:06:18,255 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:06:18,255 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:06:18,256 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:06:18,256 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:06:18,256 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:06:18,256 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:06:18,256 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:06:18,257 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:06:18,258 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:06:18,258 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:06:18,258 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:06:18,258 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:06:18,258 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:06:18,258 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:06:18,259 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:06:18,259 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:06:18,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:06:18,259 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:06:18,259 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:06:18,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:06:18,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:06:18,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:06:18,346 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:06:18,346 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:06:18,347 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-10-26 22:06:18,423 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b263c10f2/ee15ad520e3e40d9853abca064e8f159/FLAG6d678fbb1 [2018-10-26 22:06:19,314 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:06:19,316 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-10-26 22:06:19,365 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b263c10f2/ee15ad520e3e40d9853abca064e8f159/FLAG6d678fbb1 [2018-10-26 22:06:19,385 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b263c10f2/ee15ad520e3e40d9853abca064e8f159 [2018-10-26 22:06:19,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:06:19,400 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:06:19,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:06:19,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:06:19,408 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:06:19,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:06:19" (1/1) ... [2018-10-26 22:06:19,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34957d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:19, skipping insertion in model container [2018-10-26 22:06:19,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:06:19" (1/1) ... [2018-10-26 22:06:19,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:06:19,678 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:06:21,736 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:06:21,741 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:06:22,819 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:06:22,881 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:06:22,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22 WrapperNode [2018-10-26 22:06:22,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:06:22,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:06:22,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:06:22,887 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:06:22,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:23,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:06:24,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:06:24,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:06:24,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:06:24,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (1/1) ... [2018-10-26 22:06:24,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:06:24,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:06:24,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:06:24,836 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:06:24,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (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 22:06:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:06:24,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:06:24,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:06:41,512 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:06:41,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:06:41 BoogieIcfgContainer [2018-10-26 22:06:41,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:06:41,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:06:41,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:06:41,518 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:06:41,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:06:19" (1/3) ... [2018-10-26 22:06:41,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267aa30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:06:41, skipping insertion in model container [2018-10-26 22:06:41,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:22" (2/3) ... [2018-10-26 22:06:41,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267aa30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:06:41, skipping insertion in model container [2018-10-26 22:06:41,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:06:41" (3/3) ... [2018-10-26 22:06:41,522 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label05_true-unreach-call.c [2018-10-26 22:06:41,532 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:06:41,542 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:06:41,560 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:06:41,615 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:06:41,616 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:06:41,616 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:06:41,616 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:06:41,616 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:06:41,617 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:06:41,617 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:06:41,617 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:06:41,617 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:06:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:06:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-26 22:06:41,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:06:41,689 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:06:41,692 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:06:41,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:06:41,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1059493314, now seen corresponding path program 1 times [2018-10-26 22:06:41,700 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:06:41,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:06:41,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:41,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:06:41,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:06:42,150 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 22:06:42,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:06:42,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:06:42,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:06:42,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:06:42,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:06:42,178 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:07:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:05,094 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-10-26 22:07:05,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:07:05,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-26 22:07:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:05,148 INFO L225 Difference]: With dead ends: 6361 [2018-10-26 22:07:05,149 INFO L226 Difference]: Without dead ends: 4605 [2018-10-26 22:07:05,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:07:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-10-26 22:07:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-10-26 22:07:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-10-26 22:07:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-10-26 22:07:05,352 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 61 [2018-10-26 22:07:05,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:05,353 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-10-26 22:07:05,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:07:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-10-26 22:07:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-26 22:07:05,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:05,360 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:07:05,360 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:05,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2102497693, now seen corresponding path program 1 times [2018-10-26 22:07:05,361 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:05,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:05,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:05,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:05,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:05,812 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:07:06,486 WARN L179 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-26 22:07:06,777 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-26 22:07:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:06,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:06,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:07:06,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:07:06,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:07:06,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:07:06,852 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-10-26 22:07:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:40,992 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-10-26 22:07:40,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:07:40,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-26 22:07:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:41,038 INFO L225 Difference]: With dead ends: 13170 [2018-10-26 22:07:41,039 INFO L226 Difference]: Without dead ends: 10024 [2018-10-26 22:07:41,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:07:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-10-26 22:07:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-10-26 22:07:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-10-26 22:07:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-10-26 22:07:41,210 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 129 [2018-10-26 22:07:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:41,211 INFO L481 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-10-26 22:07:41,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:07:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-10-26 22:07:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-26 22:07:41,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:41,220 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:41,221 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:41,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:41,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2012285509, now seen corresponding path program 1 times [2018-10-26 22:07:41,221 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:41,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:41,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:41,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:41,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:41,850 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:07:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-26 22:07:42,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:42,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:07:42,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:07:42,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:07:42,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:07:42,248 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-10-26 22:08:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:19,877 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-10-26 22:08:19,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:08:19,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2018-10-26 22:08:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:19,937 INFO L225 Difference]: With dead ends: 26878 [2018-10-26 22:08:19,937 INFO L226 Difference]: Without dead ends: 18228 [2018-10-26 22:08:19,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:08:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-10-26 22:08:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-10-26 22:08:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-10-26 22:08:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-10-26 22:08:20,210 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 347 [2018-10-26 22:08:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:20,211 INFO L481 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-10-26 22:08:20,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:08:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-10-26 22:08:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-10-26 22:08:20,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:20,222 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:20,223 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:20,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:20,223 INFO L82 PathProgramCache]: Analyzing trace with hash 586257131, now seen corresponding path program 1 times [2018-10-26 22:08:20,223 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:20,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:20,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:20,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:20,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 117 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-26 22:08:20,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:08:20,703 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 22:08:20,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:20,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:08:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:08:20,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:08:20,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 22:08:20,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:08:20,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:08:20,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:20,995 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 4 states. [2018-10-26 22:08:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:44,618 INFO L93 Difference]: Finished difference Result 51699 states and 66183 transitions. [2018-10-26 22:08:44,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:08:44,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 375 [2018-10-26 22:08:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:44,710 INFO L225 Difference]: With dead ends: 51699 [2018-10-26 22:08:44,711 INFO L226 Difference]: Without dead ends: 37574 [2018-10-26 22:08:44,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 375 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 22:08:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37574 states. [2018-10-26 22:08:45,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37574 to 23687. [2018-10-26 22:08:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23687 states. [2018-10-26 22:08:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23687 states to 23687 states and 30221 transitions. [2018-10-26 22:08:45,255 INFO L78 Accepts]: Start accepts. Automaton has 23687 states and 30221 transitions. Word has length 375 [2018-10-26 22:08:45,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:45,256 INFO L481 AbstractCegarLoop]: Abstraction has 23687 states and 30221 transitions. [2018-10-26 22:08:45,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:08:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 23687 states and 30221 transitions. [2018-10-26 22:08:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-26 22:08:45,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:45,265 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:45,266 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:45,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:45,266 INFO L82 PathProgramCache]: Analyzing trace with hash -580901941, now seen corresponding path program 1 times [2018-10-26 22:08:45,266 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:45,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:45,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:45,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:45,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:08:45,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:08:45,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:08:45,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:08:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:08:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:45,774 INFO L87 Difference]: Start difference. First operand 23687 states and 30221 transitions. Second operand 4 states. [2018-10-26 22:09:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:01,830 INFO L93 Difference]: Finished difference Result 52862 states and 68573 transitions. [2018-10-26 22:09:01,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:09:01,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2018-10-26 22:09:01,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:01,872 INFO L225 Difference]: With dead ends: 52862 [2018-10-26 22:09:01,872 INFO L226 Difference]: Without dead ends: 27810 [2018-10-26 22:09:01,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:09:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27810 states. [2018-10-26 22:09:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27810 to 27803. [2018-10-26 22:09:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27803 states. [2018-10-26 22:09:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27803 states to 27803 states and 33684 transitions. [2018-10-26 22:09:02,562 INFO L78 Accepts]: Start accepts. Automaton has 27803 states and 33684 transitions. Word has length 395 [2018-10-26 22:09:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:02,563 INFO L481 AbstractCegarLoop]: Abstraction has 27803 states and 33684 transitions. [2018-10-26 22:09:02,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:09:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 27803 states and 33684 transitions. [2018-10-26 22:09:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-10-26 22:09:02,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:02,574 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 22:09:02,575 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:02,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:02,576 INFO L82 PathProgramCache]: Analyzing trace with hash -636908942, now seen corresponding path program 1 times [2018-10-26 22:09:02,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:02,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:02,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:02,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:02,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 252 proven. 65 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-26 22:09:03,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:09:03,037 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 22:09:03,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:03,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:09:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-26 22:09:03,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:09:03,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 22:09:03,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:09:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:09:03,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:09:03,325 INFO L87 Difference]: Start difference. First operand 27803 states and 33684 transitions. Second operand 5 states. [2018-10-26 22:09:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:39,345 INFO L93 Difference]: Finished difference Result 140660 states and 177322 transitions. [2018-10-26 22:09:39,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:09:39,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 435 [2018-10-26 22:09:39,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:39,447 INFO L225 Difference]: With dead ends: 140660 [2018-10-26 22:09:39,448 INFO L226 Difference]: Without dead ends: 108759 [2018-10-26 22:09:39,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:09:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108759 states. [2018-10-26 22:09:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108759 to 105945. [2018-10-26 22:09:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105945 states. [2018-10-26 22:09:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105945 states to 105945 states and 118697 transitions. [2018-10-26 22:09:40,496 INFO L78 Accepts]: Start accepts. Automaton has 105945 states and 118697 transitions. Word has length 435 [2018-10-26 22:09:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:40,496 INFO L481 AbstractCegarLoop]: Abstraction has 105945 states and 118697 transitions. [2018-10-26 22:09:40,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:09:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 105945 states and 118697 transitions. [2018-10-26 22:09:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-10-26 22:09:40,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:40,516 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 22:09:40,516 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:40,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash -772708149, now seen corresponding path program 1 times [2018-10-26 22:09:40,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:40,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:40,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:40,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:40,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:41,541 WARN L179 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-26 22:09:41,747 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-26 22:09:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 487 proven. 4 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-10-26 22:09:42,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:09:42,364 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 22:09:42,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:42,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:09:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-10-26 22:09:43,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:09:43,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 22:09:43,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:09:43,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:09:43,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:09:43,427 INFO L87 Difference]: Start difference. First operand 105945 states and 118697 transitions. Second operand 5 states. [2018-10-26 22:10:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:10:08,629 INFO L93 Difference]: Finished difference Result 221453 states and 247190 transitions. [2018-10-26 22:10:08,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:10:08,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 678 [2018-10-26 22:10:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:10:08,763 INFO L225 Difference]: With dead ends: 221453 [2018-10-26 22:10:08,763 INFO L226 Difference]: Without dead ends: 110037 [2018-10-26 22:10:08,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 678 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:10:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110037 states. [2018-10-26 22:10:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110037 to 108669. [2018-10-26 22:10:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108669 states. [2018-10-26 22:10:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108669 states to 108669 states and 116696 transitions. [2018-10-26 22:10:09,850 INFO L78 Accepts]: Start accepts. Automaton has 108669 states and 116696 transitions. Word has length 678 [2018-10-26 22:10:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:10:09,851 INFO L481 AbstractCegarLoop]: Abstraction has 108669 states and 116696 transitions. [2018-10-26 22:10:09,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:10:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 108669 states and 116696 transitions. [2018-10-26 22:10:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2018-10-26 22:10:09,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:09,865 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:09,865 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:09,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1510831244, now seen corresponding path program 1 times [2018-10-26 22:10:09,866 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:09,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:09,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:09,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:09,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-26 22:10:11,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:11,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:10:11,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:10:11,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:10:11,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:11,725 INFO L87 Difference]: Start difference. First operand 108669 states and 116696 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 22:10:20,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:10:20,308 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:10:20,314 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:10:20,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:10:20 BoogieIcfgContainer [2018-10-26 22:10:20,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:10:20,315 INFO L168 Benchmark]: Toolchain (without parser) took 240916.68 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-26 22:10:20,317 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:10:20,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3480.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:20,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 1207.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:20,319 INFO L168 Benchmark]: Boogie Preprocessor took 744.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 92.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:20,320 INFO L168 Benchmark]: RCFGBuilder took 16677.47 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 288.9 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -397.8 MB). Peak memory consumption was 837.2 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:20,321 INFO L168 Benchmark]: TraceAbstraction took 218800.41 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.5 GB in the beginning and 2.2 GB in the end (delta: 251.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-26 22:10:20,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3480.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1207.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 744.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 92.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16677.47 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 288.9 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -397.8 MB). Peak memory consumption was 837.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218800.41 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.5 GB in the beginning and 2.2 GB in the end (delta: 251.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (108669states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (45442 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 218.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 204.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10684 SDtfs, 46935 SDslu, 4100 SDs, 0 SdLazy, 94152 SolverSat, 19770 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 176.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1539 GetRequests, 1498 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108669occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 23640 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 4831 NumberOfCodeBlocks, 4831 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4820 ConstructedInterpolants, 0 QuantifiedInterpolants, 8214634 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1811 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 3672/3745 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown