java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label02_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:21:18,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:21:18,319 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:21:18,336 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:21:18,337 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:21:18,339 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:21:18,340 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:21:18,342 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:21:18,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:21:18,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:21:18,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:21:18,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:21:18,349 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:21:18,351 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:21:18,359 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:21:18,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:21:18,364 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:21:18,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:21:18,372 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:21:18,373 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:21:18,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:21:18,378 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:21:18,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:21:18,384 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:21:18,384 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:21:18,385 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:21:18,386 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:21:18,387 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:21:18,389 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:21:18,391 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:21:18,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:21:18,392 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:21:18,396 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 19:21:18,424 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:21:18,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:21:18,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:21:18,426 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:21:18,427 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:21:18,427 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:21:18,427 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:21:18,428 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:21:18,429 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:21:18,429 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:21:18,429 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:21:18,429 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:21:18,429 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:21:18,430 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:21:18,430 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:21:18,430 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:21:18,430 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:21:18,430 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:21:18,431 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:21:18,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:21:18,431 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:21:18,431 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:21:18,431 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:21:18,432 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:21:18,432 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:21:18,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:21:18,432 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:21:18,432 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:21:18,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:21:18,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:21:18,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:21:18,509 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:21:18,510 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:21:18,511 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label02_false-unreach-call.c [2018-10-26 19:21:18,579 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28a07a54e/8d1387365f4044ff879779e54070a2db/FLAGba53560c5 [2018-10-26 19:21:19,246 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:21:19,246 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label02_false-unreach-call.c [2018-10-26 19:21:19,268 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28a07a54e/8d1387365f4044ff879779e54070a2db/FLAGba53560c5 [2018-10-26 19:21:19,291 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28a07a54e/8d1387365f4044ff879779e54070a2db [2018-10-26 19:21:19,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:21:19,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:21:19,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:21:19,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:21:19,313 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:21:19,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:21:19" (1/1) ... [2018-10-26 19:21:19,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:19, skipping insertion in model container [2018-10-26 19:21:19,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:21:19" (1/1) ... [2018-10-26 19:21:19,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:21:19,422 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:21:20,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:21:20,291 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:21:20,547 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:21:20,569 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:21:20,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20 WrapperNode [2018-10-26 19:21:20,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:21:20,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:21:20,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:21:20,573 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:21:20,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:20,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:20,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:21:20,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:21:20,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:21:20,980 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:21:20,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:20,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:21,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:21,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:21,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:21,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:21,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (1/1) ... [2018-10-26 19:21:21,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:21:21,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:21:21,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:21:21,202 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:21:21,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (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 19:21:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:21:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:21:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:21:30,712 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:21:30,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:21:30 BoogieIcfgContainer [2018-10-26 19:21:30,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:21:30,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:21:30,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:21:30,718 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:21:30,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:21:19" (1/3) ... [2018-10-26 19:21:30,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bc47fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:21:30, skipping insertion in model container [2018-10-26 19:21:30,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:21:20" (2/3) ... [2018-10-26 19:21:30,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bc47fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:21:30, skipping insertion in model container [2018-10-26 19:21:30,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:21:30" (3/3) ... [2018-10-26 19:21:30,722 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label02_false-unreach-call.c [2018-10-26 19:21:30,733 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:21:30,744 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:21:30,763 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:21:30,806 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:21:30,807 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:21:30,807 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:21:30,808 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:21:30,808 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:21:30,808 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:21:30,808 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:21:30,808 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:21:30,808 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:21:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-26 19:21:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 19:21:30,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:21:30,853 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:21:30,855 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:21:30,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:21:30,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1827210562, now seen corresponding path program 1 times [2018-10-26 19:21:30,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:21:30,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:21:30,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:30,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:21:30,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:21:31,329 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-26 19:21:31,337 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 19:21:31,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:21:31,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:21:31,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:21:31,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:21:31,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:21:31,368 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-26 19:21:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:21:41,264 INFO L93 Difference]: Finished difference Result 1518 states and 2792 transitions. [2018-10-26 19:21:41,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:21:41,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-26 19:21:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:21:41,297 INFO L225 Difference]: With dead ends: 1518 [2018-10-26 19:21:41,297 INFO L226 Difference]: Without dead ends: 1086 [2018-10-26 19:21:41,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:21:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2018-10-26 19:21:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1063. [2018-10-26 19:21:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-26 19:21:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1813 transitions. [2018-10-26 19:21:41,413 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1813 transitions. Word has length 29 [2018-10-26 19:21:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:21:41,414 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1813 transitions. [2018-10-26 19:21:41,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:21:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1813 transitions. [2018-10-26 19:21:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-26 19:21:41,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:21:41,419 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:21:41,419 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:21:41,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:21:41,420 INFO L82 PathProgramCache]: Analyzing trace with hash -334858861, now seen corresponding path program 1 times [2018-10-26 19:21:41,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:21:41,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:21:41,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:41,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:21:41,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:21:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:21:41,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:21:41,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:21:41,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:21:41,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:21:41,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:21:41,806 INFO L87 Difference]: Start difference. First operand 1063 states and 1813 transitions. Second operand 4 states. [2018-10-26 19:21:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:21:47,817 INFO L93 Difference]: Finished difference Result 4005 states and 6946 transitions. [2018-10-26 19:21:47,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:21:47,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-26 19:21:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:21:47,835 INFO L225 Difference]: With dead ends: 4005 [2018-10-26 19:21:47,835 INFO L226 Difference]: Without dead ends: 2944 [2018-10-26 19:21:47,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:21:47,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2018-10-26 19:21:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1963. [2018-10-26 19:21:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1963 states. [2018-10-26 19:21:47,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2983 transitions. [2018-10-26 19:21:47,902 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2983 transitions. Word has length 98 [2018-10-26 19:21:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:21:47,902 INFO L481 AbstractCegarLoop]: Abstraction has 1963 states and 2983 transitions. [2018-10-26 19:21:47,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:21:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2983 transitions. [2018-10-26 19:21:47,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-26 19:21:47,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:21:47,908 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:21:47,908 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:21:47,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:21:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2086905433, now seen corresponding path program 1 times [2018-10-26 19:21:47,909 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:21:47,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:21:47,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:47,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:21:47,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:21:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:21:48,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:21:48,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:21:48,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:21:48,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:21:48,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:21:48,146 INFO L87 Difference]: Start difference. First operand 1963 states and 2983 transitions. Second operand 4 states. [2018-10-26 19:21:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:21:55,643 INFO L93 Difference]: Finished difference Result 7528 states and 11550 transitions. [2018-10-26 19:21:55,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:21:55,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-26 19:21:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:21:55,673 INFO L225 Difference]: With dead ends: 7528 [2018-10-26 19:21:55,673 INFO L226 Difference]: Without dead ends: 5567 [2018-10-26 19:21:55,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:21:55,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2018-10-26 19:21:55,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5565. [2018-10-26 19:21:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5565 states. [2018-10-26 19:21:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 7621 transitions. [2018-10-26 19:21:55,781 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 7621 transitions. Word has length 106 [2018-10-26 19:21:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:21:55,782 INFO L481 AbstractCegarLoop]: Abstraction has 5565 states and 7621 transitions. [2018-10-26 19:21:55,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:21:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 7621 transitions. [2018-10-26 19:21:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-26 19:21:55,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:21:55,789 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:21:55,790 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:21:55,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:21:55,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1552663638, now seen corresponding path program 1 times [2018-10-26 19:21:55,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:21:55,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:21:55,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:55,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:21:55,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:21:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:21:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-26 19:21:56,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:21:56,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:21:56,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:21:56,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:21:56,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:21:56,115 INFO L87 Difference]: Start difference. First operand 5565 states and 7621 transitions. Second operand 4 states. [2018-10-26 19:22:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:22:01,339 INFO L93 Difference]: Finished difference Result 11127 states and 15241 transitions. [2018-10-26 19:22:01,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:22:01,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-10-26 19:22:01,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:22:01,365 INFO L225 Difference]: With dead ends: 11127 [2018-10-26 19:22:01,366 INFO L226 Difference]: Without dead ends: 5564 [2018-10-26 19:22:01,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:22:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2018-10-26 19:22:01,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5562. [2018-10-26 19:22:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2018-10-26 19:22:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 6703 transitions. [2018-10-26 19:22:01,509 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 6703 transitions. Word has length 191 [2018-10-26 19:22:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:22:01,511 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 6703 transitions. [2018-10-26 19:22:01,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:22:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 6703 transitions. [2018-10-26 19:22:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-26 19:22:01,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:22:01,521 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:22:01,521 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:22:01,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:22:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2046084226, now seen corresponding path program 1 times [2018-10-26 19:22:01,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:22:01,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:22:01,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:01,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:01,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:02,389 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-26 19:22:02,758 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-26 19:22:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-26 19:22:03,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:22:03,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:22:03,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:22:03,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:22:03,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:22:03,194 INFO L87 Difference]: Start difference. First operand 5562 states and 6703 transitions. Second operand 5 states. [2018-10-26 19:22:08,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:22:08,999 INFO L93 Difference]: Finished difference Result 11727 states and 14049 transitions. [2018-10-26 19:22:09,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:22:09,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2018-10-26 19:22:09,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:22:09,022 INFO L225 Difference]: With dead ends: 11727 [2018-10-26 19:22:09,023 INFO L226 Difference]: Without dead ends: 6167 [2018-10-26 19:22:09,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:22:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2018-10-26 19:22:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5863. [2018-10-26 19:22:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5863 states. [2018-10-26 19:22:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5863 states to 5863 states and 6987 transitions. [2018-10-26 19:22:09,128 INFO L78 Accepts]: Start accepts. Automaton has 5863 states and 6987 transitions. Word has length 343 [2018-10-26 19:22:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:22:09,128 INFO L481 AbstractCegarLoop]: Abstraction has 5863 states and 6987 transitions. [2018-10-26 19:22:09,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:22:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states and 6987 transitions. [2018-10-26 19:22:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-26 19:22:09,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:22:09,136 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:22:09,136 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:22:09,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:22:09,138 INFO L82 PathProgramCache]: Analyzing trace with hash -494663710, now seen corresponding path program 1 times [2018-10-26 19:22:09,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:22:09,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:22:09,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:09,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:09,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:22:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:09,909 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 3 [2018-10-26 19:22:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:22:10,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:22:10,209 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 19:22:10,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:22:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:22:10,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:22:12,874 WARN L179 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 467 DAG size of output: 28 [2018-10-26 19:22:37,595 WARN L179 SmtUtils]: Spent 24.51 s on a formula simplification. DAG size of input: 306 DAG size of output: 215 [2018-10-26 19:22:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:22:39,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:22:39,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-26 19:22:39,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:22:39,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:22:39,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:22:39,308 INFO L87 Difference]: Start difference. First operand 5863 states and 6987 transitions. Second operand 9 states. Received shutdown request... [2018-10-26 19:25:45,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:25:45,294 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:25:45,299 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:25:45,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:25:45 BoogieIcfgContainer [2018-10-26 19:25:45,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:25:45,300 INFO L168 Benchmark]: Toolchain (without parser) took 265994.91 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:25:45,301 INFO L168 Benchmark]: CDTParser took 0.26 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 19:25:45,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1262.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:25:45,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 409.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:25:45,304 INFO L168 Benchmark]: Boogie Preprocessor took 221.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:25:45,305 INFO L168 Benchmark]: RCFGBuilder took 9511.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 314.2 MB). Peak memory consumption was 314.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:25:45,305 INFO L168 Benchmark]: TraceAbstraction took 254585.26 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 680.5 MB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -933.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:25:45,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1262.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 409.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 221.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9511.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 314.2 MB). Peak memory consumption was 314.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254585.26 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 680.5 MB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -933.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (5863states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (11827 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 254.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 220.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2129 SDtfs, 5828 SDslu, 1168 SDs, 0 SdLazy, 14545 SolverSat, 2727 SolverUnsat, 79 SolverUnknown, 0 SolverNotchecked, 214.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 381 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 28.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5863occurred in iteration=5, 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: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 1312 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 31.9s InterpolantComputationTime, 1523 NumberOfCodeBlocks, 1523 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1516 ConstructedInterpolants, 93 QuantifiedInterpolants, 9597580 SizeOfPredicates, 1 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 368/524 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown