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/Problem17_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:40:50,130 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:40:50,132 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:40:50,144 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:40:50,144 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:40:50,145 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:40:50,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:40:50,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:40:50,150 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:40:50,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:40:50,153 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:40:50,153 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:40:50,155 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:40:50,156 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:40:50,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:40:50,160 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:40:50,161 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:40:50,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:40:50,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:40:50,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:40:50,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:40:50,180 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:40:50,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:40:50,182 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:40:50,182 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:40:50,183 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:40:50,184 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:40:50,184 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:40:50,185 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:40:50,186 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:40:50,186 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:40:50,187 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:40:50,189 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:40:50,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:40:50,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:40:50,213 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:40:50,213 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:40:50,214 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:40:50,214 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:40:50,214 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:40:50,215 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:40:50,215 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:40:50,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:40:50,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:40:50,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:40:50,216 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:40:50,216 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:40:50,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:40:50,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:40:50,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:40:50,217 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:40:50,217 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:40:50,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:50,217 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:40:50,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:40:50,218 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:40:50,218 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:40:50,218 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:40:50,218 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:40:50,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:40:50,219 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:40:50,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:40:50,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:40:50,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:40:50,301 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:40:50,302 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:40:50,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-10-23 20:40:50,362 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bba7861e9/597814377cdc40479718a3a14f1c0b96/FLAGe12955f4f [2018-10-23 20:40:51,033 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:40:51,034 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-10-23 20:40:51,058 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bba7861e9/597814377cdc40479718a3a14f1c0b96/FLAGe12955f4f [2018-10-23 20:40:51,074 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bba7861e9/597814377cdc40479718a3a14f1c0b96 [2018-10-23 20:40:51,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:40:51,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:40:51,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:51,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:40:51,092 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:40:51,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:51" (1/1) ... [2018-10-23 20:40:51,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:51, skipping insertion in model container [2018-10-23 20:40:51,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:51" (1/1) ... [2018-10-23 20:40:51,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:40:51,222 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:40:52,278 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:52,288 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:40:52,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:52,727 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:40:52,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52 WrapperNode [2018-10-23 20:40:52,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:52,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:52,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:40:52,729 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:40:52,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:52,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:53,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:40:53,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:40:53,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:40:53,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... [2018-10-23 20:40:53,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:40:53,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:40:53,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:40:53,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:40:53,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:40:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:40:53,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:41:04,104 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:41:04,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:41:04 BoogieIcfgContainer [2018-10-23 20:41:04,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:41:04,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:41:04,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:41:04,110 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:41:04,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:40:51" (1/3) ... [2018-10-23 20:41:04,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa9c384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:41:04, skipping insertion in model container [2018-10-23 20:41:04,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:52" (2/3) ... [2018-10-23 20:41:04,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa9c384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:41:04, skipping insertion in model container [2018-10-23 20:41:04,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:41:04" (3/3) ... [2018-10-23 20:41:04,118 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label11_true-unreach-call.c [2018-10-23 20:41:04,131 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:41:04,141 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:41:04,159 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:41:04,203 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:41:04,204 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:41:04,204 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:41:04,204 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:41:04,204 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:41:04,204 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:41:04,205 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:41:04,205 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:41:04,205 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:41:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:41:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-23 20:41:04,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:04,252 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] [2018-10-23 20:41:04,254 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:04,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:04,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1848943538, now seen corresponding path program 1 times [2018-10-23 20:41:04,266 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:04,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:04,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:04,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:04,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:04,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:04,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:41:04,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:04,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:04,783 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:41:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:17,769 INFO L93 Difference]: Finished difference Result 2099 states and 3904 transitions. [2018-10-23 20:41:17,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:41:17,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-23 20:41:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:17,805 INFO L225 Difference]: With dead ends: 2099 [2018-10-23 20:41:17,806 INFO L226 Difference]: Without dead ends: 1501 [2018-10-23 20:41:17,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2018-10-23 20:41:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1499. [2018-10-23 20:41:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2018-10-23 20:41:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2373 transitions. [2018-10-23 20:41:17,943 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2373 transitions. Word has length 57 [2018-10-23 20:41:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:17,943 INFO L481 AbstractCegarLoop]: Abstraction has 1499 states and 2373 transitions. [2018-10-23 20:41:17,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:17,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2373 transitions. [2018-10-23 20:41:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-23 20:41:17,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:17,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:17,950 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:17,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:17,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1939256122, now seen corresponding path program 1 times [2018-10-23 20:41:17,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:17,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:17,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:17,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:17,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:18,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:18,334 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:41:18,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:18,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:41:18,986 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2018-10-23 20:41:19,599 WARN L179 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-10-23 20:41:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:20,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:41:20,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-23 20:41:20,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:41:20,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:41:20,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:41:20,714 INFO L87 Difference]: Start difference. First operand 1499 states and 2373 transitions. Second operand 8 states. [2018-10-23 20:41:24,391 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-23 20:41:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:49,361 INFO L93 Difference]: Finished difference Result 13769 states and 22993 transitions. [2018-10-23 20:41:49,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:41:49,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2018-10-23 20:41:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:49,393 INFO L225 Difference]: With dead ends: 13769 [2018-10-23 20:41:49,393 INFO L226 Difference]: Without dead ends: 6169 [2018-10-23 20:41:49,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 26 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-10-23 20:41:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2018-10-23 20:41:49,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 6141. [2018-10-23 20:41:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2018-10-23 20:41:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7326 transitions. [2018-10-23 20:41:49,529 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7326 transitions. Word has length 128 [2018-10-23 20:41:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:49,530 INFO L481 AbstractCegarLoop]: Abstraction has 6141 states and 7326 transitions. [2018-10-23 20:41:49,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:41:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7326 transitions. [2018-10-23 20:41:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-23 20:41:49,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:49,538 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, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:41:49,538 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:49,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1775134901, now seen corresponding path program 1 times [2018-10-23 20:41:49,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:49,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:49,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:49,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:49,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:49,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:49,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:41:49,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:49,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:49,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:49,836 INFO L87 Difference]: Start difference. First operand 6141 states and 7326 transitions. Second operand 4 states. [2018-10-23 20:41:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:54,133 INFO L93 Difference]: Finished difference Result 17393 states and 21253 transitions. [2018-10-23 20:41:54,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:41:54,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-10-23 20:41:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:54,183 INFO L225 Difference]: With dead ends: 17393 [2018-10-23 20:41:54,183 INFO L226 Difference]: Without dead ends: 11681 [2018-10-23 20:41:54,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11681 states. [2018-10-23 20:41:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11681 to 11681. [2018-10-23 20:41:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11681 states. [2018-10-23 20:41:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11681 states to 11681 states and 13632 transitions. [2018-10-23 20:41:54,388 INFO L78 Accepts]: Start accepts. Automaton has 11681 states and 13632 transitions. Word has length 230 [2018-10-23 20:41:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:54,388 INFO L481 AbstractCegarLoop]: Abstraction has 11681 states and 13632 transitions. [2018-10-23 20:41:54,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 11681 states and 13632 transitions. [2018-10-23 20:41:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-23 20:41:54,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:54,396 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:54,396 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:54,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2119976369, now seen corresponding path program 1 times [2018-10-23 20:41:54,397 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:54,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:54,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:54,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:54,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 20:41:55,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:55,081 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:41:55,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:55,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:41:55,600 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-10-23 20:41:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 20:41:56,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:41:56,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 7 [2018-10-23 20:41:56,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:41:56,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:41:56,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:41:56,007 INFO L87 Difference]: Start difference. First operand 11681 states and 13632 transitions. Second operand 8 states. [2018-10-23 20:42:04,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:04,485 INFO L93 Difference]: Finished difference Result 24212 states and 28181 transitions. [2018-10-23 20:42:04,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:42:04,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 320 [2018-10-23 20:42:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:04,533 INFO L225 Difference]: With dead ends: 24212 [2018-10-23 20:42:04,533 INFO L226 Difference]: Without dead ends: 12533 [2018-10-23 20:42:04,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:42:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2018-10-23 20:42:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12533. [2018-10-23 20:42:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12533 states. [2018-10-23 20:42:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 14512 transitions. [2018-10-23 20:42:04,920 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 14512 transitions. Word has length 320 [2018-10-23 20:42:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:04,921 INFO L481 AbstractCegarLoop]: Abstraction has 12533 states and 14512 transitions. [2018-10-23 20:42:04,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:42:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 14512 transitions. [2018-10-23 20:42:04,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-23 20:42:04,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:04,931 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:42:04,932 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:04,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:04,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1352711679, now seen corresponding path program 1 times [2018-10-23 20:42:04,933 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:04,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:04,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:04,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:04,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 20:42:05,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:42:05,655 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) [2018-10-23 20:42:05,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:42:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:05,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:42:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 20:42:06,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:42:06,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-23 20:42:06,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:42:06,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:42:06,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:42:06,021 INFO L87 Difference]: Start difference. First operand 12533 states and 14512 transitions. Second operand 5 states. [2018-10-23 20:42:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:13,759 INFO L93 Difference]: Finished difference Result 34876 states and 41007 transitions. [2018-10-23 20:42:13,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:42:13,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 396 [2018-10-23 20:42:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:13,801 INFO L225 Difference]: With dead ends: 34876 [2018-10-23 20:42:13,801 INFO L226 Difference]: Without dead ends: 23197 [2018-10-23 20:42:13,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 394 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:42:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2018-10-23 20:42:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 23194. [2018-10-23 20:42:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23194 states. [2018-10-23 20:42:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23194 states to 23194 states and 26214 transitions. [2018-10-23 20:42:14,131 INFO L78 Accepts]: Start accepts. Automaton has 23194 states and 26214 transitions. Word has length 396 [2018-10-23 20:42:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:14,131 INFO L481 AbstractCegarLoop]: Abstraction has 23194 states and 26214 transitions. [2018-10-23 20:42:14,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:42:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 23194 states and 26214 transitions. [2018-10-23 20:42:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-23 20:42:14,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:14,144 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:42:14,145 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:14,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:14,145 INFO L82 PathProgramCache]: Analyzing trace with hash -804389548, now seen corresponding path program 1 times [2018-10-23 20:42:14,145 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:14,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:14,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:14,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:14,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 547 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 20:42:15,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:42:15,064 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 [2018-10-23 20:42:15,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:15,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:42:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 20:42:15,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:42:15,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-23 20:42:15,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:42:15,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:42:15,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:42:15,575 INFO L87 Difference]: Start difference. First operand 23194 states and 26214 transitions. Second operand 11 states. [2018-10-23 20:42:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:28,121 INFO L93 Difference]: Finished difference Result 51176 states and 58121 transitions. [2018-10-23 20:42:28,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 20:42:28,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 403 [2018-10-23 20:42:28,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:28,177 INFO L225 Difference]: With dead ends: 51176 [2018-10-23 20:42:28,177 INFO L226 Difference]: Without dead ends: 28836 [2018-10-23 20:42:28,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-10-23 20:42:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28836 states. [2018-10-23 20:42:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28836 to 26176. [2018-10-23 20:42:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26176 states. [2018-10-23 20:42:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26176 states to 26176 states and 29396 transitions. [2018-10-23 20:42:28,511 INFO L78 Accepts]: Start accepts. Automaton has 26176 states and 29396 transitions. Word has length 403 [2018-10-23 20:42:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:28,512 INFO L481 AbstractCegarLoop]: Abstraction has 26176 states and 29396 transitions. [2018-10-23 20:42:28,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 20:42:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 26176 states and 29396 transitions. [2018-10-23 20:42:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-23 20:42:28,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:28,531 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:42:28,531 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:28,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1549133499, now seen corresponding path program 1 times [2018-10-23 20:42:28,531 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:28,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:28,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:28,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:28,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2018-10-23 20:42:29,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:42:29,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:42:29,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:42:29,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:42:29,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:42:29,022 INFO L87 Difference]: Start difference. First operand 26176 states and 29396 transitions. Second operand 3 states. [2018-10-23 20:42:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:30,666 INFO L93 Difference]: Finished difference Result 51062 states and 57468 transitions. [2018-10-23 20:42:30,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:42:30,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-10-23 20:42:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:30,697 INFO L225 Difference]: With dead ends: 51062 [2018-10-23 20:42:30,697 INFO L226 Difference]: Without dead ends: 26164 [2018-10-23 20:42:30,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:42:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26164 states. [2018-10-23 20:42:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26164 to 26161. [2018-10-23 20:42:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26161 states. [2018-10-23 20:42:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26161 states to 26161 states and 29362 transitions. [2018-10-23 20:42:31,270 INFO L78 Accepts]: Start accepts. Automaton has 26161 states and 29362 transitions. Word has length 467 [2018-10-23 20:42:31,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:31,271 INFO L481 AbstractCegarLoop]: Abstraction has 26161 states and 29362 transitions. [2018-10-23 20:42:31,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:42:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 26161 states and 29362 transitions. [2018-10-23 20:42:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-10-23 20:42:31,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:31,282 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:42:31,282 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:31,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:31,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1666315192, now seen corresponding path program 1 times [2018-10-23 20:42:31,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:31,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:31,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:31,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:31,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:31,720 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 20:42:32,111 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-10-23 20:42:32,396 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2018-10-23 20:42:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 461 proven. 83 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-23 20:42:32,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:42:32,649 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:42:32,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:32,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:42:33,059 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 21 [2018-10-23 20:42:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-10-23 20:42:33,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:42:33,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:42:33,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:42:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:42:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:42:33,396 INFO L87 Difference]: Start difference. First operand 26161 states and 29362 transitions. Second operand 7 states. [2018-10-23 20:43:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:07,925 INFO L93 Difference]: Finished difference Result 62567 states and 70024 transitions. [2018-10-23 20:43:07,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:43:07,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2018-10-23 20:43:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:07,957 INFO L225 Difference]: With dead ends: 62567 [2018-10-23 20:43:07,957 INFO L226 Difference]: Without dead ends: 37686 [2018-10-23 20:43:07,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:43:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37686 states. [2018-10-23 20:43:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37686 to 37668. [2018-10-23 20:43:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37668 states. [2018-10-23 20:43:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37668 states to 37668 states and 41309 transitions. [2018-10-23 20:43:08,306 INFO L78 Accepts]: Start accepts. Automaton has 37668 states and 41309 transitions. Word has length 487 [2018-10-23 20:43:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:08,307 INFO L481 AbstractCegarLoop]: Abstraction has 37668 states and 41309 transitions. [2018-10-23 20:43:08,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:43:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 37668 states and 41309 transitions. [2018-10-23 20:43:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-10-23 20:43:08,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:08,321 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:43:08,321 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:08,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:08,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1751361206, now seen corresponding path program 1 times [2018-10-23 20:43:08,322 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:08,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:08,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:08,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:08,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-10-23 20:43:08,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:08,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:43:08,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:43:08,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:43:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:43:08,678 INFO L87 Difference]: Start difference. First operand 37668 states and 41309 transitions. Second operand 3 states. [2018-10-23 20:43:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:12,407 INFO L93 Difference]: Finished difference Result 80024 states and 87999 transitions. [2018-10-23 20:43:12,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:43:12,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-10-23 20:43:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:12,447 INFO L225 Difference]: With dead ends: 80024 [2018-10-23 20:43:12,447 INFO L226 Difference]: Without dead ends: 43636 [2018-10-23 20:43:12,465 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 [2018-10-23 20:43:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43636 states. [2018-10-23 20:43:12,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43636 to 42781. [2018-10-23 20:43:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42781 states. [2018-10-23 20:43:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42781 states to 42781 states and 46817 transitions. [2018-10-23 20:43:12,820 INFO L78 Accepts]: Start accepts. Automaton has 42781 states and 46817 transitions. Word has length 553 [2018-10-23 20:43:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:12,820 INFO L481 AbstractCegarLoop]: Abstraction has 42781 states and 46817 transitions. [2018-10-23 20:43:12,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:43:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 42781 states and 46817 transitions. [2018-10-23 20:43:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-10-23 20:43:12,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:12,832 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-23 20:43:12,832 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:12,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:12,833 INFO L82 PathProgramCache]: Analyzing trace with hash -444843069, now seen corresponding path program 1 times [2018-10-23 20:43:12,833 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:12,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:12,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:12,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:12,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 645 proven. 248 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-23 20:43:13,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:43:13,430 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:43:13,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:13,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:43:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-10-23 20:43:13,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:43:13,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:43:13,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:43:13,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:43:13,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:43:13,979 INFO L87 Difference]: Start difference. First operand 42781 states and 46817 transitions. Second operand 6 states. [2018-10-23 20:43:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:24,861 INFO L93 Difference]: Finished difference Result 98780 states and 108410 transitions. [2018-10-23 20:43:24,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:43:24,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 565 [2018-10-23 20:43:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:24,917 INFO L225 Difference]: With dead ends: 98780 [2018-10-23 20:43:24,917 INFO L226 Difference]: Without dead ends: 57279 [2018-10-23 20:43:24,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:43:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57279 states. [2018-10-23 20:43:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57279 to 56830. [2018-10-23 20:43:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56830 states. [2018-10-23 20:43:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56830 states to 56830 states and 61648 transitions. [2018-10-23 20:43:25,431 INFO L78 Accepts]: Start accepts. Automaton has 56830 states and 61648 transitions. Word has length 565 [2018-10-23 20:43:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:25,431 INFO L481 AbstractCegarLoop]: Abstraction has 56830 states and 61648 transitions. [2018-10-23 20:43:25,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:43:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 56830 states and 61648 transitions. [2018-10-23 20:43:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-10-23 20:43:25,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:25,445 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-23 20:43:25,445 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:25,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:25,446 INFO L82 PathProgramCache]: Analyzing trace with hash -188059246, now seen corresponding path program 1 times [2018-10-23 20:43:25,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:25,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:25,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:25,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:25,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:25,911 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-10-23 20:43:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2018-10-23 20:43:26,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:26,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:43:26,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:43:26,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:43:26,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:43:26,140 INFO L87 Difference]: Start difference. First operand 56830 states and 61648 transitions. Second operand 4 states. [2018-10-23 20:43:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:31,819 INFO L93 Difference]: Finished difference Result 116656 states and 126614 transitions. [2018-10-23 20:43:31,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:43:31,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 582 [2018-10-23 20:43:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:31,864 INFO L225 Difference]: With dead ends: 116656 [2018-10-23 20:43:31,865 INFO L226 Difference]: Without dead ends: 61106 [2018-10-23 20:43:31,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:43:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61106 states. [2018-10-23 20:43:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61106 to 58534. [2018-10-23 20:43:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58534 states. [2018-10-23 20:43:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58534 states to 58534 states and 63490 transitions. [2018-10-23 20:43:32,328 INFO L78 Accepts]: Start accepts. Automaton has 58534 states and 63490 transitions. Word has length 582 [2018-10-23 20:43:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:32,328 INFO L481 AbstractCegarLoop]: Abstraction has 58534 states and 63490 transitions. [2018-10-23 20:43:32,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:43:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand 58534 states and 63490 transitions. [2018-10-23 20:43:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-10-23 20:43:32,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:32,339 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:32,339 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:32,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:32,340 INFO L82 PathProgramCache]: Analyzing trace with hash -314002902, now seen corresponding path program 1 times [2018-10-23 20:43:32,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:32,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:32,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:32,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:32,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 382 proven. 55 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-23 20:43:33,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:43:33,109 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:43:33,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:33,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:43:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 493 proven. 109 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-23 20:43:34,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:43:34,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-10-23 20:43:34,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:43:34,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:43:34,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:43:34,201 INFO L87 Difference]: Start difference. First operand 58534 states and 63490 transitions. Second operand 9 states. [2018-10-23 20:43:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:52,063 INFO L93 Difference]: Finished difference Result 138890 states and 150325 transitions. [2018-10-23 20:43:52,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 20:43:52,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 594 [2018-10-23 20:43:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:52,162 INFO L225 Difference]: With dead ends: 138890 [2018-10-23 20:43:52,162 INFO L226 Difference]: Without dead ends: 80728 [2018-10-23 20:43:52,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-10-23 20:43:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80728 states. [2018-10-23 20:43:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80728 to 57677. [2018-10-23 20:43:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57677 states. [2018-10-23 20:43:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57677 states to 57677 states and 62737 transitions. [2018-10-23 20:43:52,987 INFO L78 Accepts]: Start accepts. Automaton has 57677 states and 62737 transitions. Word has length 594 [2018-10-23 20:43:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:52,988 INFO L481 AbstractCegarLoop]: Abstraction has 57677 states and 62737 transitions. [2018-10-23 20:43:52,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:43:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 57677 states and 62737 transitions. [2018-10-23 20:43:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-10-23 20:43:53,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:53,004 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:53,004 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:53,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:53,005 INFO L82 PathProgramCache]: Analyzing trace with hash 894047878, now seen corresponding path program 1 times [2018-10-23 20:43:53,005 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:53,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:53,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:53,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:53,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:53,585 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 20:43:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 565 proven. 55 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2018-10-23 20:43:54,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:43:54,163 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:43:54,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:54,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:43:55,915 WARN L179 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2018-10-23 20:44:03,338 WARN L179 SmtUtils]: Spent 7.24 s on a formula simplification. DAG size of input: 76 DAG size of output: 33 [2018-10-23 20:44:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 760 proven. 108 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-10-23 20:44:03,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:44:03,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-10-23 20:44:03,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:44:04,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:44:04,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:44:04,000 INFO L87 Difference]: Start difference. First operand 57677 states and 62737 transitions. Second operand 9 states. [2018-10-23 20:44:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:44:34,804 INFO L93 Difference]: Finished difference Result 142747 states and 155313 transitions. [2018-10-23 20:44:34,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:44:34,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 596 [2018-10-23 20:44:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:44:34,887 INFO L225 Difference]: With dead ends: 142747 [2018-10-23 20:44:34,888 INFO L226 Difference]: Without dead ends: 85012 [2018-10-23 20:44:34,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-23 20:44:34,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85012 states. [2018-10-23 20:44:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85012 to 79872. [2018-10-23 20:44:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79872 states. [2018-10-23 20:44:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79872 states to 79872 states and 86766 transitions. [2018-10-23 20:44:35,625 INFO L78 Accepts]: Start accepts. Automaton has 79872 states and 86766 transitions. Word has length 596 [2018-10-23 20:44:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:44:35,626 INFO L481 AbstractCegarLoop]: Abstraction has 79872 states and 86766 transitions. [2018-10-23 20:44:35,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:44:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 79872 states and 86766 transitions. [2018-10-23 20:44:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-10-23 20:44:35,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:44:35,640 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-23 20:44:35,640 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:44:35,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:44:35,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1955363104, now seen corresponding path program 1 times [2018-10-23 20:44:35,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:44:35,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:44:35,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:35,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:44:35,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:44:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2018-10-23 20:44:36,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:44:36,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:44:36,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:44:36,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:44:36,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:44:36,572 INFO L87 Difference]: Start difference. First operand 79872 states and 86766 transitions. Second operand 5 states. [2018-10-23 20:44:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:44:44,871 INFO L93 Difference]: Finished difference Result 189208 states and 205492 transitions. [2018-10-23 20:44:44,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:44:44,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 599 [2018-10-23 20:44:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:44:44,987 INFO L225 Difference]: With dead ends: 189208 [2018-10-23 20:44:44,987 INFO L226 Difference]: Without dead ends: 110616 [2018-10-23 20:44:45,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:44:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110616 states. [2018-10-23 20:44:45,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110616 to 99930. [2018-10-23 20:44:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99930 states. [2018-10-23 20:44:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99930 states to 99930 states and 108614 transitions. [2018-10-23 20:44:46,070 INFO L78 Accepts]: Start accepts. Automaton has 99930 states and 108614 transitions. Word has length 599 [2018-10-23 20:44:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:44:46,071 INFO L481 AbstractCegarLoop]: Abstraction has 99930 states and 108614 transitions. [2018-10-23 20:44:46,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:44:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 99930 states and 108614 transitions. [2018-10-23 20:44:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-10-23 20:44:46,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:44:46,081 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2018-10-23 20:44:46,082 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:44:46,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:44:46,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1361608265, now seen corresponding path program 1 times [2018-10-23 20:44:46,082 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:44:46,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:44:46,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:46,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:44:46,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:44:47,287 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:44:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 329 proven. 706 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2018-10-23 20:44:48,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:44:48,266 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:44:48,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:44:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:44:48,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:44:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2018-10-23 20:44:48,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:44:48,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-23 20:44:48,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:44:48,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:44:48,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:44:48,636 INFO L87 Difference]: Start difference. First operand 99930 states and 108614 transitions. Second operand 9 states. Received shutdown request... [2018-10-23 20:44:50,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:44:50,739 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:44:50,746 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:44:50,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:44:50 BoogieIcfgContainer [2018-10-23 20:44:50,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:44:50,748 INFO L168 Benchmark]: Toolchain (without parser) took 239661.52 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -404.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 20:44:50,749 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:44:50,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1640.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:50,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 531.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:50,751 INFO L168 Benchmark]: Boogie Preprocessor took 300.90 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:50,752 INFO L168 Benchmark]: RCFGBuilder took 10543.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 490.1 MB). Peak memory consumption was 490.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:50,752 INFO L168 Benchmark]: TraceAbstraction took 226640.46 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -141.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:44:50,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1640.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 531.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 300.90 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10543.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 490.1 MB). Peak memory consumption was 490.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226640.46 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -141.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 176). Cancelled while BasicCegarLoop was constructing difference of abstraction (99930states) and FLOYD_HOARE automaton (currently 5 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (2153 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 226.5s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 191.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4124 SDtfs, 37884 SDslu, 3511 SDs, 0 SdLazy, 82972 SolverSat, 12304 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 165.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4240 GetRequests, 4105 SyntacticMatches, 34 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99930occurred in iteration=14, 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: 5.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 45467 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 22.3s InterpolantComputationTime, 10704 NumberOfCodeBlocks, 10704 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 10680 ConstructedInterpolants, 380 QuantifiedInterpolants, 19792550 SizeOfPredicates, 15 NumberOfNonLiveVariables, 5342 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 15732/17592 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown