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/loop-crafted/simple_array_index_value_true-unreach-call3_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:28:41,221 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:28:41,223 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:28:41,235 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:28:41,235 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:28:41,236 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:28:41,237 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:28:41,241 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:28:41,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:28:41,246 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:28:41,247 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:28:41,248 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:28:41,249 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:28:41,254 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:28:41,256 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:28:41,259 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:28:41,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:28:41,265 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:28:41,267 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:28:41,268 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:28:41,269 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:28:41,274 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:28:41,280 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:28:41,280 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:28:41,280 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:28:41,281 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:28:41,284 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:28:41,285 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:28:41,286 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:28:41,288 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:28:41,288 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:28:41,291 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 22:28:41,295 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 22:28:41,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:28:41,323 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:28:41,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:28:41,324 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:28:41,325 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:28:41,325 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:28:41,325 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:28:41,326 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:28:41,326 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:28:41,326 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:28:41,326 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:28:41,326 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:28:41,327 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:28:41,328 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:28:41,328 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:28:41,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:28:41,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:28:41,329 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:28:41,330 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:28:41,330 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:28:41,330 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:28:41,330 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:28:41,330 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:28:41,331 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:28:41,331 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:28:41,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:28:41,331 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:28:41,331 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:28:41,386 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:28:41,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:28:41,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:28:41,404 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:28:41,404 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:28:41,405 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call3_true-termination.i [2018-10-26 22:28:41,466 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58e685560/d6e19e974f9f42ce87287c271a69db92/FLAG403f3afb8 [2018-10-26 22:28:41,873 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:28:41,874 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_true-unreach-call3_true-termination.i [2018-10-26 22:28:41,880 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58e685560/d6e19e974f9f42ce87287c271a69db92/FLAG403f3afb8 [2018-10-26 22:28:41,894 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58e685560/d6e19e974f9f42ce87287c271a69db92 [2018-10-26 22:28:41,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:28:41,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:28:41,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:28:41,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:28:41,910 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:28:41,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:28:41" (1/1) ... [2018-10-26 22:28:41,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f22fcff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:41, skipping insertion in model container [2018-10-26 22:28:41,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:28:41" (1/1) ... [2018-10-26 22:28:41,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:28:41,946 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:28:42,125 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:28:42,129 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:28:42,152 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:28:42,172 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:28:42,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42 WrapperNode [2018-10-26 22:28:42,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:28:42,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:28:42,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:28:42,174 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:28:42,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:28:42,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:28:42,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:28:42,210 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:28:42,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... [2018-10-26 22:28:42,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:28:42,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:28:42,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:28:42,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:28:42,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:28:42,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:28:42,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:28:42,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 22:28:42,769 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:28:42,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:28:42 BoogieIcfgContainer [2018-10-26 22:28:42,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:28:42,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:28:42,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:28:42,775 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:28:42,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:28:41" (1/3) ... [2018-10-26 22:28:42,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203630c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:28:42, skipping insertion in model container [2018-10-26 22:28:42,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:28:42" (2/3) ... [2018-10-26 22:28:42,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203630c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:28:42, skipping insertion in model container [2018-10-26 22:28:42,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:28:42" (3/3) ... [2018-10-26 22:28:42,778 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_true-unreach-call3_true-termination.i [2018-10-26 22:28:42,788 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:28:42,797 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:28:42,814 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:28:42,847 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:28:42,848 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:28:42,848 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:28:42,848 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:28:42,849 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:28:42,849 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:28:42,849 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:28:42,849 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:28:42,849 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:28:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-26 22:28:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 22:28:42,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:42,873 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:42,875 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:42,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:42,881 INFO L82 PathProgramCache]: Analyzing trace with hash 781418611, now seen corresponding path program 1 times [2018-10-26 22:28:42,883 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:42,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:42,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:42,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:28:42,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:43,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:28:43,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:28:43,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:28:43,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:28:43,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:28:43,045 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-26 22:28:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:43,062 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2018-10-26 22:28:43,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:28:43,063 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-26 22:28:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:43,074 INFO L225 Difference]: With dead ends: 40 [2018-10-26 22:28:43,075 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 22:28:43,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:28:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 22:28:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 22:28:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 22:28:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-10-26 22:28:43,115 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2018-10-26 22:28:43,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:43,115 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-10-26 22:28:43,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:28:43,116 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-10-26 22:28:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 22:28:43,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:43,117 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:43,117 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:43,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:43,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1279355689, now seen corresponding path program 1 times [2018-10-26 22:28:43,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:43,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:43,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:43,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:28:43,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:43,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:28:43,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:28:43,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:28:43,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:28:43,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:28:43,366 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2018-10-26 22:28:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:43,504 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-10-26 22:28:43,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:28:43,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-26 22:28:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:43,506 INFO L225 Difference]: With dead ends: 33 [2018-10-26 22:28:43,506 INFO L226 Difference]: Without dead ends: 31 [2018-10-26 22:28:43,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:28:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-26 22:28:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2018-10-26 22:28:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 22:28:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-26 22:28:43,512 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2018-10-26 22:28:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:43,513 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-26 22:28:43,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:28:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-26 22:28:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 22:28:43,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:43,514 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:43,515 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:43,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:43,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1045835244, now seen corresponding path program 1 times [2018-10-26 22:28:43,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:43,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:43,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:43,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:28:43,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:43,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:28:43,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:28:43,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:28:43,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:28:43,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:28:43,600 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2018-10-26 22:28:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:43,672 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2018-10-26 22:28:43,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:28:43,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-26 22:28:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:43,676 INFO L225 Difference]: With dead ends: 53 [2018-10-26 22:28:43,678 INFO L226 Difference]: Without dead ends: 37 [2018-10-26 22:28:43,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:28:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-26 22:28:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2018-10-26 22:28:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-26 22:28:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-10-26 22:28:43,685 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2018-10-26 22:28:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:43,685 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-10-26 22:28:43,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:28:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-10-26 22:28:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 22:28:43,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:43,688 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:43,688 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:43,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:43,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1436282830, now seen corresponding path program 1 times [2018-10-26 22:28:43,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:43,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:43,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:43,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:28:43,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:43,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:28:43,825 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:28:43,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:28:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:43,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:28:43,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 22:28:43,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 22:28:43,974 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:28:43,976 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:28:43,997 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:28:43,997 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-10-26 22:28:44,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 22:28:44,240 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 22:28:44,241 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:28:44,259 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:28:44,262 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:28:44,262 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-10-26 22:28:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:44,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:28:44,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 10 [2018-10-26 22:28:44,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:28:44,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:28:44,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:28:44,349 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 10 states. [2018-10-26 22:28:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:45,701 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2018-10-26 22:28:45,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-26 22:28:45,706 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-10-26 22:28:45,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:45,708 INFO L225 Difference]: With dead ends: 154 [2018-10-26 22:28:45,708 INFO L226 Difference]: Without dead ends: 138 [2018-10-26 22:28:45,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-10-26 22:28:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-26 22:28:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 34. [2018-10-26 22:28:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-26 22:28:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-10-26 22:28:45,719 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 17 [2018-10-26 22:28:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:45,719 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-10-26 22:28:45,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:28:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-10-26 22:28:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 22:28:45,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:45,721 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:45,721 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:45,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1554630718, now seen corresponding path program 2 times [2018-10-26 22:28:45,722 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:45,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:45,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:45,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:28:45,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:46,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:28:46,072 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:28:46,087 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:28:46,123 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:28:46,123 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:28:46,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:28:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:46,207 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:28:46,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-10-26 22:28:46,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 22:28:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 22:28:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:28:46,209 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2018-10-26 22:28:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:46,481 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2018-10-26 22:28:46,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:28:46,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-10-26 22:28:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:46,484 INFO L225 Difference]: With dead ends: 112 [2018-10-26 22:28:46,484 INFO L226 Difference]: Without dead ends: 88 [2018-10-26 22:28:46,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:28:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-26 22:28:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 28. [2018-10-26 22:28:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-26 22:28:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-10-26 22:28:46,492 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2018-10-26 22:28:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:46,492 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-10-26 22:28:46,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 22:28:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-10-26 22:28:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 22:28:46,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:46,493 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:46,494 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:46,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:46,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2110104060, now seen corresponding path program 3 times [2018-10-26 22:28:46,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:46,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:46,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:46,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:28:46,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:48,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:28:48,890 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:28:48,906 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 22:28:49,026 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-26 22:28:49,026 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:28:49,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:28:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:49,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:28:49,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-10-26 22:28:49,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 22:28:49,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 22:28:49,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=86, Unknown=1, NotChecked=0, Total=110 [2018-10-26 22:28:49,158 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 11 states. [2018-10-26 22:28:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:49,378 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2018-10-26 22:28:49,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:28:49,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-10-26 22:28:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:49,380 INFO L225 Difference]: With dead ends: 121 [2018-10-26 22:28:49,381 INFO L226 Difference]: Without dead ends: 105 [2018-10-26 22:28:49,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=23, Invalid=86, Unknown=1, NotChecked=0, Total=110 [2018-10-26 22:28:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-26 22:28:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 30. [2018-10-26 22:28:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-26 22:28:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-10-26 22:28:49,388 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2018-10-26 22:28:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:49,388 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-10-26 22:28:49,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 22:28:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-10-26 22:28:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 22:28:49,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:49,390 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:49,390 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:49,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:49,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2047042998, now seen corresponding path program 4 times [2018-10-26 22:28:49,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:49,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:49,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:49,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:28:49,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:50,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:28:50,103 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:28:50,110 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-26 22:28:50,159 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 22:28:50,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:28:50,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:28:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:50,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:28:50,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-10-26 22:28:50,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 22:28:50,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 22:28:50,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-10-26 22:28:50,380 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 13 states. [2018-10-26 22:28:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:50,750 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2018-10-26 22:28:50,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:28:50,756 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-10-26 22:28:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:50,757 INFO L225 Difference]: With dead ends: 138 [2018-10-26 22:28:50,757 INFO L226 Difference]: Without dead ends: 122 [2018-10-26 22:28:50,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-10-26 22:28:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-26 22:28:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 32. [2018-10-26 22:28:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-26 22:28:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-10-26 22:28:50,764 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 25 [2018-10-26 22:28:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:50,764 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-10-26 22:28:50,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 22:28:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-10-26 22:28:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 22:28:50,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:50,765 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:50,766 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:50,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:50,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1574904560, now seen corresponding path program 5 times [2018-10-26 22:28:50,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:50,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:50,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:50,767 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:28:50,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:28:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:56,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:28:56,080 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:28:56,088 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-26 22:28:57,576 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-26 22:28:57,576 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:28:57,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:28:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:28:57,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:28:57,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-10-26 22:28:57,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 22:28:57,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 22:28:57,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=175, Unknown=2, NotChecked=0, Total=210 [2018-10-26 22:28:57,693 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 15 states. [2018-10-26 22:28:58,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:28:58,078 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-10-26 22:28:58,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:28:58,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2018-10-26 22:28:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:28:58,081 INFO L225 Difference]: With dead ends: 155 [2018-10-26 22:28:58,081 INFO L226 Difference]: Without dead ends: 139 [2018-10-26 22:28:58,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=33, Invalid=175, Unknown=2, NotChecked=0, Total=210 [2018-10-26 22:28:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-26 22:28:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 34. [2018-10-26 22:28:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-26 22:28:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-26 22:28:58,087 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2018-10-26 22:28:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:28:58,087 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-26 22:28:58,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 22:28:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-26 22:28:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 22:28:58,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:28:58,089 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:28:58,089 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:28:58,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:28:58,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1178568278, now seen corresponding path program 6 times [2018-10-26 22:28:58,090 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:28:58,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:28:58,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:58,091 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:28:58,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:28:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:04,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:29:04,254 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:29:04,269 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-26 22:29:10,898 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-26 22:29:10,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:29:10,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:29:10,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-26 22:29:11,001 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 22:29:11,001 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,003 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,013 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,014 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2018-10-26 22:29:11,055 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-10-26 22:29:11,060 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 22:29:11,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 22:29:11,063 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,069 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,075 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,076 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:11 [2018-10-26 22:29:11,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-10-26 22:29:11,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2018-10-26 22:29:11,127 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-26 22:29:11,151 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 22:29:11,175 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 22:29:11,175 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:41 [2018-10-26 22:29:11,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 39 [2018-10-26 22:29:11,563 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 22:29:11,565 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-10-26 22:29:11,566 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,582 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2018-10-26 22:29:11,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-10-26 22:29:11,628 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,639 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,669 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 22:29:11,670 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:84, output treesize:44 [2018-10-26 22:29:11,756 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 36 [2018-10-26 22:29:11,768 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-10-26 22:29:11,769 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,815 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2018-10-26 22:29:11,873 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 22:29:11,877 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-10-26 22:29:11,878 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,905 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:11,942 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 22:29:11,943 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:94, output treesize:54 [2018-10-26 22:29:12,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2018-10-26 22:29:12,068 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 22:29:12,093 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-10-26 22:29:12,094 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,141 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,214 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2018-10-26 22:29:12,217 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 22:29:12,218 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,228 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,279 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 22:29:12,279 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:96, output treesize:52 [2018-10-26 22:29:12,362 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 36 [2018-10-26 22:29:12,365 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-10-26 22:29:12,365 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,379 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,451 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 59 [2018-10-26 22:29:12,460 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 22:29:12,464 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2018-10-26 22:29:12,465 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,500 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 22:29:12,563 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 22:29:12,564 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:104, output treesize:59 [2018-10-26 22:29:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:13,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:29:13,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-10-26 22:29:13,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-26 22:29:13,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-26 22:29:13,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=367, Unknown=2, NotChecked=0, Total=420 [2018-10-26 22:29:13,049 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 21 states. [2018-10-26 22:29:26,003 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 18 [2018-10-26 22:29:34,273 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 18 [2018-10-26 22:29:36,943 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 19 [2018-10-26 22:29:41,825 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 19 [2018-10-26 22:29:46,401 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2018-10-26 22:30:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:30:36,118 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2018-10-26 22:30:36,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-26 22:30:36,118 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 29 [2018-10-26 22:30:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:30:36,119 INFO L225 Difference]: With dead ends: 168 [2018-10-26 22:30:36,119 INFO L226 Difference]: Without dead ends: 152 [2018-10-26 22:30:36,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=139, Invalid=787, Unknown=4, NotChecked=0, Total=930 [2018-10-26 22:30:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-26 22:30:36,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 41. [2018-10-26 22:30:36,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 22:30:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-26 22:30:36,126 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 29 [2018-10-26 22:30:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:30:36,127 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-26 22:30:36,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-26 22:30:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-26 22:30:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-26 22:30:36,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:30:36,128 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:30:36,129 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:30:36,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:30:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1032245036, now seen corresponding path program 1 times [2018-10-26 22:30:36,129 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:30:36,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:30:36,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:36,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:30:36,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:30:41,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:30:41,712 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:30:41,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:30:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:41,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:30:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:30:41,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:30:41,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-10-26 22:30:41,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 22:30:41,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 22:30:41,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=297, Unknown=2, NotChecked=0, Total=342 [2018-10-26 22:30:41,955 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 19 states. [2018-10-26 22:30:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:30:43,066 INFO L93 Difference]: Finished difference Result 188 states and 200 transitions. [2018-10-26 22:30:43,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 22:30:43,069 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2018-10-26 22:30:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:30:43,070 INFO L225 Difference]: With dead ends: 188 [2018-10-26 22:30:43,070 INFO L226 Difference]: Without dead ends: 167 [2018-10-26 22:30:43,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=43, Invalid=297, Unknown=2, NotChecked=0, Total=342 [2018-10-26 22:30:43,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-26 22:30:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 43. [2018-10-26 22:30:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-26 22:30:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-26 22:30:43,080 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-10-26 22:30:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:30:43,080 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-26 22:30:43,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-26 22:30:43,080 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-26 22:30:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-26 22:30:43,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:30:43,083 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:30:43,083 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:30:43,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:30:43,084 INFO L82 PathProgramCache]: Analyzing trace with hash 421009498, now seen corresponding path program 2 times [2018-10-26 22:30:43,086 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:30:43,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:30:43,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:43,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:30:43,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:30:48,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:30:48,655 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:30:48,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:30:48,701 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:30:48,701 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:30:48,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:30:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:30:48,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:30:48,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-10-26 22:30:48,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-26 22:30:48,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-26 22:30:48,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=371, Unknown=1, NotChecked=0, Total=420 [2018-10-26 22:30:48,863 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 21 states. [2018-10-26 22:30:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:30:49,908 INFO L93 Difference]: Finished difference Result 205 states and 218 transitions. [2018-10-26 22:30:49,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:30:49,909 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-10-26 22:30:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:30:49,911 INFO L225 Difference]: With dead ends: 205 [2018-10-26 22:30:49,911 INFO L226 Difference]: Without dead ends: 184 [2018-10-26 22:30:49,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=48, Invalid=371, Unknown=1, NotChecked=0, Total=420 [2018-10-26 22:30:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-26 22:30:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 45. [2018-10-26 22:30:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-26 22:30:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-26 22:30:49,919 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-10-26 22:30:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:30:49,920 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-26 22:30:49,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-26 22:30:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-26 22:30:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-26 22:30:49,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:30:49,922 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:30:49,922 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:30:49,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:30:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1134245472, now seen corresponding path program 3 times [2018-10-26 22:30:49,923 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:30:49,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:30:49,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:49,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:30:49,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:30:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:30:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:30:59,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:30:59,488 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:30:59,500 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 22:31:57,414 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-26 22:31:57,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:31:57,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:31:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:31:57,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:31:57,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-10-26 22:31:57,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-26 22:31:57,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-26 22:31:57,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=451, Unknown=2, NotChecked=0, Total=506 [2018-10-26 22:31:57,804 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 23 states. [2018-10-26 22:31:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:31:58,832 INFO L93 Difference]: Finished difference Result 222 states and 236 transitions. [2018-10-26 22:31:58,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 22:31:58,833 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-26 22:31:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:31:58,835 INFO L225 Difference]: With dead ends: 222 [2018-10-26 22:31:58,835 INFO L226 Difference]: Without dead ends: 201 [2018-10-26 22:31:58,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=53, Invalid=451, Unknown=2, NotChecked=0, Total=506 [2018-10-26 22:31:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-26 22:31:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 47. [2018-10-26 22:31:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-26 22:31:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-26 22:31:58,846 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-26 22:31:58,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:31:58,847 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-26 22:31:58,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-26 22:31:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-26 22:31:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 22:31:58,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:31:58,847 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:31:58,848 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:31:58,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:31:58,848 INFO L82 PathProgramCache]: Analyzing trace with hash -640750874, now seen corresponding path program 4 times [2018-10-26 22:31:58,848 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:31:58,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:31:58,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:31:58,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:31:58,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:31:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:32:03,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:32:03,996 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:32:04,006 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-26 22:32:04,047 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 22:32:04,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:32:04,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:32:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:32:04,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:32:04,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-10-26 22:32:04,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-26 22:32:04,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-26 22:32:04,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=541, Unknown=1, NotChecked=0, Total=600 [2018-10-26 22:32:04,257 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 25 states. [2018-10-26 22:32:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:32:05,607 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2018-10-26 22:32:05,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 22:32:05,609 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-10-26 22:32:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:32:05,610 INFO L225 Difference]: With dead ends: 239 [2018-10-26 22:32:05,611 INFO L226 Difference]: Without dead ends: 218 [2018-10-26 22:32:05,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=58, Invalid=541, Unknown=1, NotChecked=0, Total=600 [2018-10-26 22:32:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-26 22:32:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 49. [2018-10-26 22:32:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-26 22:32:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-26 22:32:05,627 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-10-26 22:32:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:32:05,627 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-26 22:32:05,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-26 22:32:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-26 22:32:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 22:32:05,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:32:05,629 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:32:05,629 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:32:05,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:32:05,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1310222868, now seen corresponding path program 5 times [2018-10-26 22:32:05,629 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:32:05,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:32:05,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:05,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:32:05,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:32:13,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:32:13,645 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:32:13,659 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-26 22:33:25,241 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-26 22:33:25,242 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:33:25,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-26 22:33:25,893 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-26 22:33:26,094 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:33:26,095 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:33:26,101 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:33:26,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:33:26 BoogieIcfgContainer [2018-10-26 22:33:26,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:33:26,102 INFO L168 Benchmark]: Toolchain (without parser) took 284197.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 861.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.5 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:26,103 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:33:26,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:26,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.36 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:33:26,104 INFO L168 Benchmark]: Boogie Preprocessor took 26.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:33:26,105 INFO L168 Benchmark]: RCFGBuilder took 533.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:26,106 INFO L168 Benchmark]: TraceAbstraction took 283330.29 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 111.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -42.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:33:26,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 266.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.36 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 533.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -782.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 283330.29 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 111.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -42.3 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 13). Cancelled while BasicCegarLoop was analyzing trace of length 49 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. TIMEOUT Result, 283.2s OverallTime, 14 OverallIterations, 13 TraceHistogramMax, 90.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 817 SDtfs, 1995 SDslu, 8037 SDs, 0 SdLazy, 5744 SolverSat, 179 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 72.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 442 GetRequests, 247 SyntacticMatches, 15 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 57.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 1157 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 66.7s SatisfiabilityAnalysisTime, 44.7s InterpolantComputationTime, 668 NumberOfCodeBlocks, 668 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 94913 SizeOfPredicates, 53 NumberOfNonLiveVariables, 1540 ConjunctsInSsa, 238 ConjunctsInUnsatCore, 23 InterpolantComputations, 3 PerfectInterpolantSequences, 56/1188 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown