java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:13:45,450 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:13:45,452 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:13:45,464 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:13:45,464 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:13:45,465 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:13:45,467 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:13:45,469 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:13:45,470 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:13:45,471 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:13:45,472 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:13:45,472 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:13:45,474 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:13:45,475 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:13:45,476 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:13:45,477 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:13:45,478 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:13:45,480 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:13:45,482 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:13:45,484 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:13:45,485 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:13:45,486 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:13:45,489 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:13:45,489 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:13:45,489 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:13:45,491 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:13:45,492 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:13:45,493 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:13:45,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:13:45,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:13:45,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:13:45,496 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:13:45,498 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:13:45,514 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:13:45,514 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:13:45,515 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:13:45,515 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:13:45,516 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:13:45,516 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:13:45,517 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:13:45,517 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:13:45,517 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:13:45,518 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:13:45,518 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:13:45,518 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:13:45,518 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:13:45,519 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:13:45,519 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:13:45,519 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:13:45,519 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:13:45,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:13:45,520 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:13:45,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:13:45,520 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:13:45,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:13:45,521 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:13:45,521 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:13:45,521 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:13:45,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:13:45,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:13:45,522 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:13:45,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:13:45,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:13:45,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:13:45,607 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:13:45,608 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:13:45,609 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-10-23 20:13:45,681 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6d152e902/525920cadca8458580c852e0bfe66753/FLAG86828bd0b [2018-10-23 20:13:46,437 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:13:46,438 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-10-23 20:13:46,472 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6d152e902/525920cadca8458580c852e0bfe66753/FLAG86828bd0b [2018-10-23 20:13:46,492 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6d152e902/525920cadca8458580c852e0bfe66753 [2018-10-23 20:13:46,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:13:46,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:13:46,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:13:46,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:13:46,516 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:13:46,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:13:46" (1/1) ... [2018-10-23 20:13:46,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cf1b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:46, skipping insertion in model container [2018-10-23 20:13:46,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:13:46" (1/1) ... [2018-10-23 20:13:46,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:13:46,713 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:13:48,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:13:48,067 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:13:48,629 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:13:48,665 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:13:48,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48 WrapperNode [2018-10-23 20:13:48,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:13:48,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:13:48,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:13:48,668 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:13:48,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:48,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:13:49,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:13:49,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:13:49,254 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:13:49,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... [2018-10-23 20:13:49,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:13:49,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:13:49,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:13:49,601 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:13:49,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:13:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:13:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:13:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:13:58,069 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:13:58,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:13:58 BoogieIcfgContainer [2018-10-23 20:13:58,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:13:58,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:13:58,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:13:58,075 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:13:58,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:13:46" (1/3) ... [2018-10-23 20:13:58,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ad060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:13:58, skipping insertion in model container [2018-10-23 20:13:58,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:48" (2/3) ... [2018-10-23 20:13:58,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ad060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:13:58, skipping insertion in model container [2018-10-23 20:13:58,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:13:58" (3/3) ... [2018-10-23 20:13:58,080 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label57_true-unreach-call.c [2018-10-23 20:13:58,091 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:13:58,101 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:13:58,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:13:58,169 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:13:58,170 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:13:58,170 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:13:58,170 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:13:58,170 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:13:58,170 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:13:58,171 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:13:58,171 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:13:58,171 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:13:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 20:13:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-23 20:13:58,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:13:58,217 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:13:58,220 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:13:58,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:13:58,226 INFO L82 PathProgramCache]: Analyzing trace with hash -387853398, now seen corresponding path program 1 times [2018-10-23 20:13:58,228 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:13:58,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:13:58,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:13:58,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:13:58,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:13:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:13:58,737 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 20:13:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:13:59,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:13:59,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:13:59,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:13:59,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:13:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:13:59,382 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 7 states. [2018-10-23 20:14:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:14:20,190 INFO L93 Difference]: Finished difference Result 5413 states and 10642 transitions. [2018-10-23 20:14:20,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:14:20,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-10-23 20:14:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:14:20,271 INFO L225 Difference]: With dead ends: 5413 [2018-10-23 20:14:20,271 INFO L226 Difference]: Without dead ends: 4578 [2018-10-23 20:14:20,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:14:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2018-10-23 20:14:20,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3072. [2018-10-23 20:14:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3072 states. [2018-10-23 20:14:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4384 transitions. [2018-10-23 20:14:20,461 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4384 transitions. Word has length 38 [2018-10-23 20:14:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:14:20,462 INFO L481 AbstractCegarLoop]: Abstraction has 3072 states and 4384 transitions. [2018-10-23 20:14:20,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:14:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4384 transitions. [2018-10-23 20:14:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-23 20:14:20,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:14:20,475 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:14:20,475 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:14:20,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:14:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1929180755, now seen corresponding path program 1 times [2018-10-23 20:14:20,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:14:20,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:14:20,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:14:20,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:14:20,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:14:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:14:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 134 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 20:14:21,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:14:21,093 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:14:21,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:14:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:14:21,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:14:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-23 20:14:21,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:14:21,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-23 20:14:21,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:14:21,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:14:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:14:21,429 INFO L87 Difference]: Start difference. First operand 3072 states and 4384 transitions. Second operand 6 states. [2018-10-23 20:14:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:14:43,648 INFO L93 Difference]: Finished difference Result 15950 states and 24157 transitions. [2018-10-23 20:14:43,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:14:43,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-23 20:14:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:14:43,697 INFO L225 Difference]: With dead ends: 15950 [2018-10-23 20:14:43,698 INFO L226 Difference]: Without dead ends: 10621 [2018-10-23 20:14:43,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 181 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:14:43,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10621 states. [2018-10-23 20:14:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10621 to 4575. [2018-10-23 20:14:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2018-10-23 20:14:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 5823 transitions. [2018-10-23 20:14:43,838 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 5823 transitions. Word has length 180 [2018-10-23 20:14:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:14:43,838 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 5823 transitions. [2018-10-23 20:14:43,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:14:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 5823 transitions. [2018-10-23 20:14:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-23 20:14:43,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:14:43,844 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:14:43,845 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:14:43,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:14:43,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1624472738, now seen corresponding path program 1 times [2018-10-23 20:14:43,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:14:43,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:14:43,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:14:43,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:14:43,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:14:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:14:44,530 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-10-23 20:14:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 122 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 20:14:44,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:14:44,691 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:14:44,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:14:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:14:44,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:14:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-23 20:14:44,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:14:44,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:14:44,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:14:44,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:14:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:14:44,883 INFO L87 Difference]: Start difference. First operand 4575 states and 5823 transitions. Second operand 7 states. [2018-10-23 20:14:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:14:56,945 INFO L93 Difference]: Finished difference Result 17421 states and 22220 transitions. [2018-10-23 20:14:56,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:14:56,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-10-23 20:14:56,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:14:56,993 INFO L225 Difference]: With dead ends: 17421 [2018-10-23 20:14:56,993 INFO L226 Difference]: Without dead ends: 10584 [2018-10-23 20:14:57,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 252 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:14:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10584 states. [2018-10-23 20:14:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10584 to 9079. [2018-10-23 20:14:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9079 states. [2018-10-23 20:14:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9079 states to 9079 states and 10588 transitions. [2018-10-23 20:14:57,199 INFO L78 Accepts]: Start accepts. Automaton has 9079 states and 10588 transitions. Word has length 250 [2018-10-23 20:14:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:14:57,201 INFO L481 AbstractCegarLoop]: Abstraction has 9079 states and 10588 transitions. [2018-10-23 20:14:57,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:14:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 9079 states and 10588 transitions. [2018-10-23 20:14:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-23 20:14:57,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:14:57,207 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:14:57,207 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:14:57,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:14:57,208 INFO L82 PathProgramCache]: Analyzing trace with hash 768917486, now seen corresponding path program 1 times [2018-10-23 20:14:57,208 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:14:57,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:14:57,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:14:57,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:14:57,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:14:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:14:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 71 proven. 67 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 20:14:57,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:14:57,854 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 [2018-10-23 20:14:57,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:14:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:14:57,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:14:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-23 20:14:58,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:14:58,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:14:58,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:14:58,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:14:58,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:14:58,171 INFO L87 Difference]: Start difference. First operand 9079 states and 10588 transitions. Second operand 5 states. [2018-10-23 20:15:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:15:05,947 INFO L93 Difference]: Finished difference Result 27180 states and 32792 transitions. [2018-10-23 20:15:05,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:15:05,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2018-10-23 20:15:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:15:05,999 INFO L225 Difference]: With dead ends: 27180 [2018-10-23 20:15:06,004 INFO L226 Difference]: Without dead ends: 18103 [2018-10-23 20:15:06,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:15:06,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18103 states. [2018-10-23 20:15:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18103 to 18103. [2018-10-23 20:15:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18103 states. [2018-10-23 20:15:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18103 states to 18103 states and 20930 transitions. [2018-10-23 20:15:06,266 INFO L78 Accepts]: Start accepts. Automaton has 18103 states and 20930 transitions. Word has length 255 [2018-10-23 20:15:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:15:06,267 INFO L481 AbstractCegarLoop]: Abstraction has 18103 states and 20930 transitions. [2018-10-23 20:15:06,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:15:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 18103 states and 20930 transitions. [2018-10-23 20:15:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-23 20:15:06,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:15:06,273 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:15:06,273 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:15:06,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:15:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash -384877355, now seen corresponding path program 1 times [2018-10-23 20:15:06,273 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:15:06,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:15:06,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:06,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:06,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:06,660 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-10-23 20:15:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:15:06,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:15:06,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:15:06,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:15:06,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:15:06,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:15:06,880 INFO L87 Difference]: Start difference. First operand 18103 states and 20930 transitions. Second operand 4 states. [2018-10-23 20:15:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:15:14,767 INFO L93 Difference]: Finished difference Result 61772 states and 72730 transitions. [2018-10-23 20:15:14,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:15:14,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2018-10-23 20:15:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:15:14,854 INFO L225 Difference]: With dead ends: 61772 [2018-10-23 20:15:14,855 INFO L226 Difference]: Without dead ends: 43671 [2018-10-23 20:15:14,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:15:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43671 states. [2018-10-23 20:15:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43671 to 43671. [2018-10-23 20:15:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43671 states. [2018-10-23 20:15:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43671 states to 43671 states and 50510 transitions. [2018-10-23 20:15:15,414 INFO L78 Accepts]: Start accepts. Automaton has 43671 states and 50510 transitions. Word has length 292 [2018-10-23 20:15:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:15:15,415 INFO L481 AbstractCegarLoop]: Abstraction has 43671 states and 50510 transitions. [2018-10-23 20:15:15,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:15:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 43671 states and 50510 transitions. [2018-10-23 20:15:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-23 20:15:15,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:15:15,428 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:15:15,428 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:15:15,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:15:15,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1819016660, now seen corresponding path program 1 times [2018-10-23 20:15:15,428 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:15:15,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:15:15,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:15,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:15,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 266 proven. 5 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-23 20:15:15,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:15:15,961 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:15:15,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:16,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:15:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-23 20:15:16,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:15:16,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:15:16,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:15:16,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:15:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:15:16,520 INFO L87 Difference]: Start difference. First operand 43671 states and 50510 transitions. Second operand 5 states. [2018-10-23 20:15:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:15:30,759 INFO L93 Difference]: Finished difference Result 87340 states and 101018 transitions. [2018-10-23 20:15:30,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:15:30,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2018-10-23 20:15:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:15:30,816 INFO L225 Difference]: With dead ends: 87340 [2018-10-23 20:15:30,817 INFO L226 Difference]: Without dead ends: 43671 [2018-10-23 20:15:30,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:15:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43671 states. [2018-10-23 20:15:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43671 to 43671. [2018-10-23 20:15:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43671 states. [2018-10-23 20:15:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43671 states to 43671 states and 47549 transitions. [2018-10-23 20:15:31,263 INFO L78 Accepts]: Start accepts. Automaton has 43671 states and 47549 transitions. Word has length 345 [2018-10-23 20:15:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:15:31,264 INFO L481 AbstractCegarLoop]: Abstraction has 43671 states and 47549 transitions. [2018-10-23 20:15:31,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:15:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 43671 states and 47549 transitions. [2018-10-23 20:15:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-10-23 20:15:31,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:15:31,286 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:15:31,286 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:15:31,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:15:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1631486016, now seen corresponding path program 1 times [2018-10-23 20:15:31,287 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:15:31,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:15:31,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:31,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:31,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 402 proven. 8 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-10-23 20:15:31,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:15:31,958 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:15:31,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:32,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:15:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 555 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-23 20:15:32,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:15:32,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 20:15:32,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:15:32,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:15:32,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:15:32,290 INFO L87 Difference]: Start difference. First operand 43671 states and 47549 transitions. Second operand 5 states. [2018-10-23 20:15:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:15:47,704 INFO L93 Difference]: Finished difference Result 177630 states and 194912 transitions. [2018-10-23 20:15:47,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:15:47,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 480 [2018-10-23 20:15:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:15:47,830 INFO L225 Difference]: With dead ends: 177630 [2018-10-23 20:15:47,830 INFO L226 Difference]: Without dead ends: 116611 [2018-10-23 20:15:47,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:15:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116611 states. [2018-10-23 20:15:48,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116611 to 75980. [2018-10-23 20:15:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75980 states. [2018-10-23 20:15:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75980 states to 75980 states and 82060 transitions. [2018-10-23 20:15:48,730 INFO L78 Accepts]: Start accepts. Automaton has 75980 states and 82060 transitions. Word has length 480 [2018-10-23 20:15:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:15:48,731 INFO L481 AbstractCegarLoop]: Abstraction has 75980 states and 82060 transitions. [2018-10-23 20:15:48,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:15:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 75980 states and 82060 transitions. [2018-10-23 20:15:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-10-23 20:15:48,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:15:48,767 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:15:48,767 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:15:48,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:15:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1434435195, now seen corresponding path program 1 times [2018-10-23 20:15:48,768 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:15:48,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:15:48,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:48,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:48,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 713 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-10-23 20:15:49,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:15:49,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:15:49,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:15:49,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:15:49,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:15:49,522 INFO L87 Difference]: Start difference. First operand 75980 states and 82060 transitions. Second operand 4 states. [2018-10-23 20:15:56,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:15:56,780 INFO L93 Difference]: Finished difference Result 152709 states and 164875 transitions. [2018-10-23 20:15:56,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:15:56,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 562 [2018-10-23 20:15:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:15:56,870 INFO L225 Difference]: With dead ends: 152709 [2018-10-23 20:15:56,870 INFO L226 Difference]: Without dead ends: 70705 [2018-10-23 20:15:56,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:15:56,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70705 states. [2018-10-23 20:15:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70705 to 63185. [2018-10-23 20:15:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63185 states. [2018-10-23 20:15:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63185 states to 63185 states and 66719 transitions. [2018-10-23 20:15:57,494 INFO L78 Accepts]: Start accepts. Automaton has 63185 states and 66719 transitions. Word has length 562 [2018-10-23 20:15:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:15:57,494 INFO L481 AbstractCegarLoop]: Abstraction has 63185 states and 66719 transitions. [2018-10-23 20:15:57,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:15:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 63185 states and 66719 transitions. [2018-10-23 20:15:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-10-23 20:15:57,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:15:57,519 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:15:57,519 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:15:57,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:15:57,520 INFO L82 PathProgramCache]: Analyzing trace with hash 524229747, now seen corresponding path program 1 times [2018-10-23 20:15:57,520 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:15:57,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:15:57,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:57,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:57,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:57,962 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:15:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 919 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-10-23 20:15:58,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:15:58,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:15:58,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:15:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:15:58,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:15:58,282 INFO L87 Difference]: Start difference. First operand 63185 states and 66719 transitions. Second operand 4 states. [2018-10-23 20:16:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:05,678 INFO L93 Difference]: Finished difference Result 133888 states and 141433 transitions. [2018-10-23 20:16:05,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:05,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 640 [2018-10-23 20:16:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:05,748 INFO L225 Difference]: With dead ends: 133888 [2018-10-23 20:16:05,748 INFO L226 Difference]: Without dead ends: 71457 [2018-10-23 20:16:05,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71457 states. [2018-10-23 20:16:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71457 to 63937. [2018-10-23 20:16:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63937 states. [2018-10-23 20:16:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63937 states to 63937 states and 66360 transitions. [2018-10-23 20:16:06,266 INFO L78 Accepts]: Start accepts. Automaton has 63937 states and 66360 transitions. Word has length 640 [2018-10-23 20:16:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:06,267 INFO L481 AbstractCegarLoop]: Abstraction has 63937 states and 66360 transitions. [2018-10-23 20:16:06,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:06,267 INFO L276 IsEmpty]: Start isEmpty. Operand 63937 states and 66360 transitions. [2018-10-23 20:16:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-10-23 20:16:06,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:06,285 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:06,286 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:06,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:06,286 INFO L82 PathProgramCache]: Analyzing trace with hash 709934627, now seen corresponding path program 1 times [2018-10-23 20:16:06,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:06,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:06,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:06,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:06,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2018-10-23 20:16:06,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:06,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:06,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:16:06,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:16:06,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:16:06,839 INFO L87 Difference]: Start difference. First operand 63937 states and 66360 transitions. Second operand 3 states. [2018-10-23 20:16:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:11,237 INFO L93 Difference]: Finished difference Result 129376 states and 134357 transitions. [2018-10-23 20:16:11,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:16:11,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 672 [2018-10-23 20:16:11,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:11,301 INFO L225 Difference]: With dead ends: 129376 [2018-10-23 20:16:11,302 INFO L226 Difference]: Without dead ends: 66193 [2018-10-23 20:16:11,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:16:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66193 states. [2018-10-23 20:16:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66193 to 64689. [2018-10-23 20:16:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64689 states. [2018-10-23 20:16:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64689 states to 64689 states and 66665 transitions. [2018-10-23 20:16:12,393 INFO L78 Accepts]: Start accepts. Automaton has 64689 states and 66665 transitions. Word has length 672 [2018-10-23 20:16:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:12,394 INFO L481 AbstractCegarLoop]: Abstraction has 64689 states and 66665 transitions. [2018-10-23 20:16:12,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:16:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 64689 states and 66665 transitions. [2018-10-23 20:16:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2018-10-23 20:16:12,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:12,437 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:12,437 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:12,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:12,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1532058663, now seen corresponding path program 1 times [2018-10-23 20:16:12,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:12,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:12,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:12,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:12,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:13,333 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:16:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 545 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 20:16:14,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:16:14,325 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:16:14,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:14,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:16:28,305 WARN L179 SmtUtils]: Spent 12.65 s on a formula simplification. DAG size of input: 433 DAG size of output: 19 [2018-10-23 20:16:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2018-10-23 20:16:28,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:16:28,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-23 20:16:28,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:16:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:16:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:16:28,973 INFO L87 Difference]: Start difference. First operand 64689 states and 66665 transitions. Second operand 6 states. Received shutdown request... [2018-10-23 20:17:57,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:17:57,182 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:17:57,187 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:17:57,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:17:57 BoogieIcfgContainer [2018-10-23 20:17:57,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:17:57,189 INFO L168 Benchmark]: Toolchain (without parser) took 250683.02 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -478.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 20:17:57,190 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:17:57,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2155.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:17:57,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 585.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 809.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:17:57,192 INFO L168 Benchmark]: Boogie Preprocessor took 346.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:17:57,193 INFO L168 Benchmark]: RCFGBuilder took 8470.75 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 218.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -184.0 MB). Peak memory consumption was 615.0 MB. Max. memory is 7.1 GB. [2018-10-23 20:17:57,194 INFO L168 Benchmark]: TraceAbstraction took 239116.11 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 454.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 20:17:57,199 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2155.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 585.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 809.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 346.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8470.75 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 218.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -184.0 MB). Peak memory consumption was 615.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239116.11 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 454.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (64689states) and FLOYD_HOARE automaton (currently 8 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (96321 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 239.0s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 208.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5113 SDtfs, 33379 SDslu, 1271 SDs, 0 SdLazy, 80569 SolverSat, 16787 SolverUnsat, 28 SolverUnknown, 0 SolverNotchecked, 183.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2538 GetRequests, 2480 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75980occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 66232 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 20.7s InterpolantComputationTime, 7132 NumberOfCodeBlocks, 7132 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7115 ConstructedInterpolants, 38 QuantifiedInterpolants, 12386971 SizeOfPredicates, 9 NumberOfNonLiveVariables, 3154 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 7621/7780 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown