./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91fda61e05234dbe68b069d372f5d4b0bb73b229 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 16:09:58,208 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 16:09:58,209 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 16:09:58,228 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 16:09:58,229 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 16:09:58,230 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 16:09:58,232 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 16:09:58,234 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 16:09:58,237 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 16:09:58,239 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 16:09:58,242 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 16:09:58,242 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 16:09:58,244 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 16:09:58,246 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 16:09:58,252 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 16:09:58,252 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 16:09:58,255 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 16:09:58,260 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 16:09:58,264 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 16:09:58,266 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 16:09:58,268 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 16:09:58,272 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 16:09:58,274 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 16:09:58,276 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 16:09:58,277 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 16:09:58,278 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 16:09:58,278 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 16:09:58,281 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 16:09:58,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 16:09:58,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 16:09:58,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 16:09:58,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 16:09:58,286 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 16:09:58,286 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 16:09:58,289 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 16:09:58,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 16:09:58,291 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 16:09:58,312 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 16:09:58,313 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 16:09:58,313 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 16:09:58,314 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 16:09:58,315 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 16:09:58,315 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 16:09:58,315 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 16:09:58,315 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 16:09:58,315 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 16:09:58,315 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 16:09:58,316 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 16:09:58,316 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 16:09:58,316 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 16:09:58,316 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 16:09:58,316 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 16:09:58,316 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 16:09:58,318 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 16:09:58,318 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 16:09:58,318 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 16:09:58,319 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 16:09:58,319 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 16:09:58,319 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 16:09:58,319 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 16:09:58,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 16:09:58,321 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 16:09:58,321 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 16:09:58,321 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 16:09:58,321 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 16:09:58,321 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 16:09:58,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 16:09:58,322 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91fda61e05234dbe68b069d372f5d4b0bb73b229 [2018-11-28 16:09:58,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 16:09:58,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 16:09:58,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 16:09:58,391 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 16:09:58,392 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 16:09:58,393 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-11-28 16:09:58,459 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaa0b8bff/a51561a07e7d4b89ad984ae7b6310f7a/FLAGf6b1cf6b1 [2018-11-28 16:09:58,968 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 16:09:58,969 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-11-28 16:09:58,979 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaa0b8bff/a51561a07e7d4b89ad984ae7b6310f7a/FLAGf6b1cf6b1 [2018-11-28 16:09:59,337 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaa0b8bff/a51561a07e7d4b89ad984ae7b6310f7a [2018-11-28 16:09:59,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 16:09:59,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 16:09:59,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 16:09:59,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 16:09:59,347 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 16:09:59,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a78434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59, skipping insertion in model container [2018-11-28 16:09:59,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 16:09:59,387 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 16:09:59,588 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 16:09:59,593 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 16:09:59,615 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 16:09:59,632 INFO L195 MainTranslator]: Completed translation [2018-11-28 16:09:59,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59 WrapperNode [2018-11-28 16:09:59,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 16:09:59,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 16:09:59,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 16:09:59,633 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 16:09:59,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 16:09:59,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 16:09:59,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 16:09:59,660 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 16:09:59,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... [2018-11-28 16:09:59,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 16:09:59,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 16:09:59,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 16:09:59,687 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 16:09:59,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-28 16:09:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 16:09:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 16:09:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 16:09:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 16:09:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 16:09:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 16:10:00,224 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 16:10:00,225 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 16:10:00,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:00 BoogieIcfgContainer [2018-11-28 16:10:00,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 16:10:00,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 16:10:00,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 16:10:00,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 16:10:00,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:09:59" (1/3) ... [2018-11-28 16:10:00,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eee53d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:00, skipping insertion in model container [2018-11-28 16:10:00,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:59" (2/3) ... [2018-11-28 16:10:00,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eee53d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:00, skipping insertion in model container [2018-11-28 16:10:00,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:00" (3/3) ... [2018-11-28 16:10:00,236 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-11-28 16:10:00,246 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 16:10:00,253 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 16:10:00,267 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 16:10:00,299 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 16:10:00,299 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 16:10:00,300 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 16:10:00,300 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 16:10:00,300 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 16:10:00,300 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 16:10:00,300 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 16:10:00,300 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 16:10:00,301 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 16:10:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 16:10:00,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 16:10:00,326 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:10:00,327 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:10:00,329 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:10:00,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:10:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2018-11-28 16:10:00,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:10:00,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:10:00,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:00,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:10:00,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:10:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 16:10:00,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:10:00,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 16:10:00,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 16:10:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 16:10:00,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 16:10:00,517 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2018-11-28 16:10:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:10:00,670 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2018-11-28 16:10:00,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 16:10:00,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-28 16:10:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:10:00,684 INFO L225 Difference]: With dead ends: 70 [2018-11-28 16:10:00,684 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 16:10:00,687 INFO L631 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 [2018-11-28 16:10:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 16:10:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 16:10:00,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 16:10:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2018-11-28 16:10:00,726 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2018-11-28 16:10:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:10:00,726 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2018-11-28 16:10:00,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 16:10:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2018-11-28 16:10:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 16:10:00,727 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:10:00,727 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:10:00,728 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:10:00,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:10:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2018-11-28 16:10:00,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:10:00,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:10:00,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:00,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:10:00,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:10:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 16:10:00,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:10:00,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 16:10:00,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 16:10:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 16:10:00,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 16:10:00,764 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2018-11-28 16:10:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:10:00,910 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2018-11-28 16:10:00,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 16:10:00,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-28 16:10:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:10:00,913 INFO L225 Difference]: With dead ends: 87 [2018-11-28 16:10:00,913 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 16:10:00,914 INFO L631 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 [2018-11-28 16:10:00,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 16:10:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-11-28 16:10:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 16:10:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2018-11-28 16:10:00,923 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 13 [2018-11-28 16:10:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:10:00,923 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2018-11-28 16:10:00,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 16:10:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2018-11-28 16:10:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 16:10:00,924 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:10:00,924 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:10:00,925 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:10:00,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:10:00,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1966887380, now seen corresponding path program 1 times [2018-11-28 16:10:00,925 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:10:00,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:10:00,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:00,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:10:00,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:10:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 16:10:00,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:10:00,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 16:10:00,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 16:10:00,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 16:10:00,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 16:10:00,967 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand 3 states. [2018-11-28 16:10:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:10:01,180 INFO L93 Difference]: Finished difference Result 93 states and 130 transitions. [2018-11-28 16:10:01,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 16:10:01,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-28 16:10:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:10:01,183 INFO L225 Difference]: With dead ends: 93 [2018-11-28 16:10:01,183 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 16:10:01,184 INFO L631 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 [2018-11-28 16:10:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 16:10:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-11-28 16:10:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-28 16:10:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2018-11-28 16:10:01,197 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 13 [2018-11-28 16:10:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:10:01,197 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2018-11-28 16:10:01,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 16:10:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2018-11-28 16:10:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 16:10:01,199 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:10:01,199 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:10:01,199 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:10:01,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:10:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2018-11-28 16:10:01,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:10:01,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:10:01,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:01,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:10:01,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:10:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 16:10:01,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:10:01,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 16:10:01,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 16:10:01,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 16:10:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 16:10:01,264 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand 3 states. [2018-11-28 16:10:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:10:01,429 INFO L93 Difference]: Finished difference Result 137 states and 187 transitions. [2018-11-28 16:10:01,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 16:10:01,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-28 16:10:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:10:01,431 INFO L225 Difference]: With dead ends: 137 [2018-11-28 16:10:01,432 INFO L226 Difference]: Without dead ends: 93 [2018-11-28 16:10:01,432 INFO L631 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 [2018-11-28 16:10:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-28 16:10:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2018-11-28 16:10:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-28 16:10:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions. [2018-11-28 16:10:01,448 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 20 [2018-11-28 16:10:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:10:01,448 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 123 transitions. [2018-11-28 16:10:01,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 16:10:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions. [2018-11-28 16:10:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 16:10:01,450 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:10:01,450 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:10:01,450 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:10:01,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:10:01,451 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2018-11-28 16:10:01,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:10:01,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:10:01,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:01,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:10:01,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:10:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 16:10:01,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:10:01,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 16:10:01,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 16:10:01,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 16:10:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 16:10:01,493 INFO L87 Difference]: Start difference. First operand 91 states and 123 transitions. Second operand 3 states. [2018-11-28 16:10:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:10:01,601 INFO L93 Difference]: Finished difference Result 181 states and 245 transitions. [2018-11-28 16:10:01,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 16:10:01,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-28 16:10:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:10:01,604 INFO L225 Difference]: With dead ends: 181 [2018-11-28 16:10:01,604 INFO L226 Difference]: Without dead ends: 76 [2018-11-28 16:10:01,605 INFO L631 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 [2018-11-28 16:10:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-28 16:10:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2018-11-28 16:10:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-28 16:10:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2018-11-28 16:10:01,618 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 23 [2018-11-28 16:10:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:10:01,618 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2018-11-28 16:10:01,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 16:10:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2018-11-28 16:10:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 16:10:01,621 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 16:10:01,621 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 16:10:01,621 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 16:10:01,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 16:10:01,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2018-11-28 16:10:01,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 16:10:01,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 16:10:01,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:01,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 16:10:01,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 16:10:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 16:10:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 16:10:01,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 16:10:01,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 16:10:01,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 16:10:01,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 16:10:01,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 16:10:01,707 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 3 states. [2018-11-28 16:10:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 16:10:01,735 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2018-11-28 16:10:01,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 16:10:01,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-28 16:10:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 16:10:01,738 INFO L225 Difference]: With dead ends: 124 [2018-11-28 16:10:01,738 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 16:10:01,739 INFO L631 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 [2018-11-28 16:10:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 16:10:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 16:10:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 16:10:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 16:10:01,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-11-28 16:10:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 16:10:01,741 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 16:10:01,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 16:10:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 16:10:01,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 16:10:01,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 16:10:01,967 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-11-28 16:10:02,087 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 16:10:02,087 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 16:10:02,088 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 16:10:02,088 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 16:10:02,088 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 16:10:02,088 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 16:10:02,088 INFO L444 ceAbstractionStarter]: At program point L97(lines 9 141) the Hoare annotation is: false [2018-11-28 16:10:02,088 INFO L444 ceAbstractionStarter]: At program point L31(lines 30 125) the Hoare annotation is: (<= main_~blastFlag~0 2) [2018-11-28 16:10:02,089 INFO L448 ceAbstractionStarter]: For program point L93-1(lines 54 107) no Hoare annotation was computed. [2018-11-28 16:10:02,089 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2018-11-28 16:10:02,089 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 141) no Hoare annotation was computed. [2018-11-28 16:10:02,089 INFO L448 ceAbstractionStarter]: For program point L89-1(lines 54 107) no Hoare annotation was computed. [2018-11-28 16:10:02,089 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-28 16:10:02,089 INFO L448 ceAbstractionStarter]: For program point L78-1(lines 54 107) no Hoare annotation was computed. [2018-11-28 16:10:02,090 INFO L448 ceAbstractionStarter]: For program point L70(lines 70 74) no Hoare annotation was computed. [2018-11-28 16:10:02,090 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 128) no Hoare annotation was computed. [2018-11-28 16:10:02,090 INFO L448 ceAbstractionStarter]: For program point L58-1(lines 54 107) no Hoare annotation was computed. [2018-11-28 16:10:02,090 INFO L448 ceAbstractionStarter]: For program point L50(lines 50 109) no Hoare annotation was computed. [2018-11-28 16:10:02,090 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 111) no Hoare annotation was computed. [2018-11-28 16:10:02,090 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 141) no Hoare annotation was computed. [2018-11-28 16:10:02,090 INFO L451 ceAbstractionStarter]: At program point L137(lines 9 141) the Hoare annotation is: true [2018-11-28 16:10:02,096 INFO L444 ceAbstractionStarter]: At program point L100(lines 18 135) the Hoare annotation is: (or (and (<= 8640 main_~s__state~0) (<= main_~blastFlag~0 3) (not (= 0 main_~s__hit~0))) (<= main_~blastFlag~0 2)) [2018-11-28 16:10:02,096 INFO L448 ceAbstractionStarter]: For program point L96(lines 96 98) no Hoare annotation was computed. [2018-11-28 16:10:02,096 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 125) no Hoare annotation was computed. [2018-11-28 16:10:02,096 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 141) the Hoare annotation is: true [2018-11-28 16:10:02,097 INFO L444 ceAbstractionStarter]: At program point L26(lines 25 128) the Hoare annotation is: (<= main_~blastFlag~0 2) [2018-11-28 16:10:02,097 INFO L444 ceAbstractionStarter]: At program point L51(lines 50 109) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (<= main_~blastFlag~0 3) (not (= 0 main_~s__hit~0))))) [2018-11-28 16:10:02,097 INFO L444 ceAbstractionStarter]: At program point L47(lines 46 111) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 3) (not (= 0 main_~s__hit~0))) (and .cse0 (<= main_~blastFlag~0 2)))) [2018-11-28 16:10:02,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:10:02 BoogieIcfgContainer [2018-11-28 16:10:02,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 16:10:02,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 16:10:02,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 16:10:02,123 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 16:10:02,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:00" (3/4) ... [2018-11-28 16:10:02,130 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 16:10:02,140 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 16:10:02,140 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 16:10:02,145 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 16:10:02,146 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 16:10:02,146 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 16:10:02,229 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 16:10:02,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 16:10:02,230 INFO L168 Benchmark]: Toolchain (without parser) took 2889.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 952.7 MB in the beginning and 968.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 76.4 MB. Max. memory is 11.5 GB. [2018-11-28 16:10:02,238 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 16:10:02,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 16:10:02,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.31 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 16:10:02,240 INFO L168 Benchmark]: Boogie Preprocessor took 26.83 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 16:10:02,240 INFO L168 Benchmark]: RCFGBuilder took 538.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -123.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 16:10:02,242 INFO L168 Benchmark]: TraceAbstraction took 1895.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 975.1 MB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. [2018-11-28 16:10:02,243 INFO L168 Benchmark]: Witness Printer took 107.27 ms. Allocated memory is still 1.1 GB. Free memory was 975.1 MB in the beginning and 968.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-11-28 16:10:02,254 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 290.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.31 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.83 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 538.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -123.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1895.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 975.1 MB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. * Witness Printer took 107.27 ms. Allocated memory is still 1.1 GB. Free memory was 975.1 MB in the beginning and 968.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (8656 <= s__state && blastFlag <= 2) || ((8656 <= s__state && blastFlag <= 3) && !(0 == s__hit)) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag <= 3) && !(0 == s__hit)) || blastFlag <= 2 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((8640 <= s__state && blastFlag <= 3) && !(0 == s__hit)) || (8640 <= s__state && blastFlag <= 2) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: blastFlag <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 184 SDtfs, 92 SDslu, 109 SDs, 0 SdLazy, 95 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=4, 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 34 NumberOfFragments, 65 HoareAnnotationTreeSize, 11 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...