./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-acceleration/array_true-unreach-call3_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa 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/loop-acceleration/array_true-unreach-call3_true-termination.i -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 4090a90876c90ba415ea4bea59e2b23309410708 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 05:54:46,373 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 05:54:46,375 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 05:54:46,388 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 05:54:46,388 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 05:54:46,389 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 05:54:46,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 05:54:46,393 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 05:54:46,395 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 05:54:46,396 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 05:54:46,397 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 05:54:46,397 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 05:54:46,398 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 05:54:46,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 05:54:46,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 05:54:46,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 05:54:46,403 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 05:54:46,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 05:54:46,407 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 05:54:46,409 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 05:54:46,410 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 05:54:46,412 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 05:54:46,415 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 05:54:46,415 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 05:54:46,415 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 05:54:46,417 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 05:54:46,418 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 05:54:46,419 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 05:54:46,420 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 05:54:46,422 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 05:54:46,422 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 05:54:46,423 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 05:54:46,423 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 05:54:46,423 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 05:54:46,425 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 05:54:46,426 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 05:54:46,426 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 05:54:46,443 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 05:54:46,443 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 05:54:46,445 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 05:54:46,445 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 05:54:46,445 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 05:54:46,445 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 05:54:46,446 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 05:54:46,446 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 05:54:46,446 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 05:54:46,446 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 05:54:46,447 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 05:54:46,448 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 05:54:46,448 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 05:54:46,448 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 05:54:46,448 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 05:54:46,448 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 05:54:46,449 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 05:54:46,449 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 05:54:46,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 05:54:46,450 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 05:54:46,450 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 05:54:46,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 05:54:46,450 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 05:54:46,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 05:54:46,451 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 05:54:46,452 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 05:54:46,452 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 05:54:46,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 05:54:46,452 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 -> 4090a90876c90ba415ea4bea59e2b23309410708 [2018-12-31 05:54:46,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 05:54:46,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 05:54:46,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 05:54:46,508 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 05:54:46,508 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 05:54:46,509 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-12-31 05:54:46,567 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475d7a85b/5c0bead104724ae7a5d8f19afddd04a9/FLAG5882fc3ac [2018-12-31 05:54:47,014 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 05:54:47,015 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-12-31 05:54:47,025 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475d7a85b/5c0bead104724ae7a5d8f19afddd04a9/FLAG5882fc3ac [2018-12-31 05:54:47,371 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475d7a85b/5c0bead104724ae7a5d8f19afddd04a9 [2018-12-31 05:54:47,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 05:54:47,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 05:54:47,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 05:54:47,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 05:54:47,381 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 05:54:47,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53427258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47, skipping insertion in model container [2018-12-31 05:54:47,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 05:54:47,412 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 05:54:47,642 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:54:47,649 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 05:54:47,677 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:54:47,707 INFO L195 MainTranslator]: Completed translation [2018-12-31 05:54:47,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47 WrapperNode [2018-12-31 05:54:47,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 05:54:47,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 05:54:47,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 05:54:47,709 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 05:54:47,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 05:54:47,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 05:54:47,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 05:54:47,756 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 05:54:47,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (1/1) ... [2018-12-31 05:54:47,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 05:54:47,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 05:54:47,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 05:54:47,784 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 05:54:47,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (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 [2018-12-31 05:54:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 05:54:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 05:54:47,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 05:54:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 05:54:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 05:54:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 05:54:48,256 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 05:54:48,256 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-31 05:54:48,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:54:48 BoogieIcfgContainer [2018-12-31 05:54:48,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 05:54:48,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 05:54:48,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 05:54:48,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 05:54:48,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:54:47" (1/3) ... [2018-12-31 05:54:48,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad02386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:54:48, skipping insertion in model container [2018-12-31 05:54:48,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:54:47" (2/3) ... [2018-12-31 05:54:48,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad02386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:54:48, skipping insertion in model container [2018-12-31 05:54:48,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:54:48" (3/3) ... [2018-12-31 05:54:48,267 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-12-31 05:54:48,278 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 05:54:48,287 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 05:54:48,311 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 05:54:48,344 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 05:54:48,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 05:54:48,345 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 05:54:48,345 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 05:54:48,345 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 05:54:48,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 05:54:48,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 05:54:48,347 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 05:54:48,347 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 05:54:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-31 05:54:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-31 05:54:48,369 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:54:48,370 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:54:48,373 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:54:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:54:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash 212411183, now seen corresponding path program 1 times [2018-12-31 05:54:48,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:54:48,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:54:48,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:48,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:54:48,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:54:48,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:54:48,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 05:54:48,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 05:54:48,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 05:54:48,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 05:54:48,545 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2018-12-31 05:54:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:54:48,560 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2018-12-31 05:54:48,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 05:54:48,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-12-31 05:54:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:54:48,572 INFO L225 Difference]: With dead ends: 30 [2018-12-31 05:54:48,572 INFO L226 Difference]: Without dead ends: 13 [2018-12-31 05:54:48,576 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 05:54:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-31 05:54:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-31 05:54:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-31 05:54:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-12-31 05:54:48,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2018-12-31 05:54:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:54:48,613 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-12-31 05:54:48,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 05:54:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-12-31 05:54:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 05:54:48,615 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:54:48,615 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:54:48,615 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:54:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:54:48,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2018507400, now seen corresponding path program 1 times [2018-12-31 05:54:48,616 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:54:48,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:54:48,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:48,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:54:48,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:54:48,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:54:48,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 05:54:48,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 05:54:48,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 05:54:48,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 05:54:48,688 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2018-12-31 05:54:48,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:54:48,915 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-12-31 05:54:48,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 05:54:48,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-31 05:54:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:54:48,917 INFO L225 Difference]: With dead ends: 32 [2018-12-31 05:54:48,917 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 05:54:48,919 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 [2018-12-31 05:54:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 05:54:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2018-12-31 05:54:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-31 05:54:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-12-31 05:54:48,924 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2018-12-31 05:54:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:54:48,924 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-12-31 05:54:48,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 05:54:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2018-12-31 05:54:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 05:54:48,926 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:54:48,926 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:54:48,926 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:54:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:54:48,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1562587830, now seen corresponding path program 1 times [2018-12-31 05:54:48,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:54:48,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:54:48,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:48,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:54:48,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:54:49,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:54:49,039 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-31 05:54:49,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:54:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:49,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:54:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:54:49,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:54:49,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-31 05:54:49,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 05:54:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 05:54:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-31 05:54:49,165 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 5 states. [2018-12-31 05:54:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:54:49,347 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-12-31 05:54:49,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 05:54:49,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-31 05:54:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:54:49,351 INFO L225 Difference]: With dead ends: 45 [2018-12-31 05:54:49,351 INFO L226 Difference]: Without dead ends: 33 [2018-12-31 05:54:49,351 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-31 05:54:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-31 05:54:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2018-12-31 05:54:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 05:54:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-12-31 05:54:49,356 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 11 [2018-12-31 05:54:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:54:49,357 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-12-31 05:54:49,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 05:54:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-12-31 05:54:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-31 05:54:49,358 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:54:49,358 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:54:49,358 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:54:49,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:54:49,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1568667532, now seen corresponding path program 2 times [2018-12-31 05:54:49,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:54:49,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:54:49,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:49,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:54:49,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:54:49,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:54:49,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-31 05:54:49,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 05:54:49,640 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-31 05:54:49,640 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 05:54:49,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:54:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-31 05:54:49,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-31 05:54:49,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-12-31 05:54:49,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-31 05:54:49,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-31 05:54:49,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 05:54:49,711 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2018-12-31 05:54:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:54:49,909 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2018-12-31 05:54:49,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-31 05:54:49,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-12-31 05:54:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:54:49,911 INFO L225 Difference]: With dead ends: 53 [2018-12-31 05:54:49,911 INFO L226 Difference]: Without dead ends: 31 [2018-12-31 05:54:49,912 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-12-31 05:54:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-31 05:54:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-12-31 05:54:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-31 05:54:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-12-31 05:54:49,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 13 [2018-12-31 05:54:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:54:49,918 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-12-31 05:54:49,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-31 05:54:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-12-31 05:54:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-31 05:54:49,919 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:54:49,919 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:54:49,920 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:54:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:54:49,920 INFO L82 PathProgramCache]: Analyzing trace with hash -834386755, now seen corresponding path program 1 times [2018-12-31 05:54:49,920 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:54:49,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:54:49,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:49,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 05:54:49,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-31 05:54:50,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:54:50,107 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-31 05:54:50,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:54:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:50,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:54:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-31 05:54:50,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:54:50,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-31 05:54:50,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-31 05:54:50,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-31 05:54:50,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-31 05:54:50,187 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 7 states. [2018-12-31 05:54:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:54:50,312 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2018-12-31 05:54:50,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 05:54:50,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-12-31 05:54:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:54:50,315 INFO L225 Difference]: With dead ends: 61 [2018-12-31 05:54:50,315 INFO L226 Difference]: Without dead ends: 41 [2018-12-31 05:54:50,316 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-31 05:54:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-31 05:54:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-12-31 05:54:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-31 05:54:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-12-31 05:54:50,322 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 27 [2018-12-31 05:54:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:54:50,322 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-12-31 05:54:50,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-31 05:54:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-12-31 05:54:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-31 05:54:50,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:54:50,324 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:54:50,324 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:54:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:54:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash 258596475, now seen corresponding path program 2 times [2018-12-31 05:54:50,325 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:54:50,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:54:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:50,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:54:50,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-31 05:54:50,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:54:50,437 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-31 05:54:50,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 05:54:50,507 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 05:54:50,507 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 05:54:50,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:54:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-31 05:54:50,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:54:50,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-31 05:54:50,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 05:54:50,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 05:54:50,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-31 05:54:50,664 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 8 states. [2018-12-31 05:54:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:54:50,927 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2018-12-31 05:54:50,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 05:54:50,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-12-31 05:54:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:54:50,929 INFO L225 Difference]: With dead ends: 75 [2018-12-31 05:54:50,929 INFO L226 Difference]: Without dead ends: 51 [2018-12-31 05:54:50,930 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-31 05:54:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-31 05:54:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-12-31 05:54:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-31 05:54:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-12-31 05:54:50,936 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 29 [2018-12-31 05:54:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:54:50,937 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-12-31 05:54:50,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 05:54:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-12-31 05:54:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-31 05:54:50,938 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:54:50,938 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:54:50,939 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:54:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:54:50,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1651507015, now seen corresponding path program 3 times [2018-12-31 05:54:50,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:54:50,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:54:50,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:50,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 05:54:50,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:54:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:54:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-31 05:54:51,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:54:51,091 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-31 05:54:51,101 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 05:54:51,116 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-31 05:54:51,116 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 05:54:51,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:54:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-12-31 05:54:51,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-31 05:54:51,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2018-12-31 05:54:51,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-31 05:54:51,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-31 05:54:51,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-12-31 05:54:51,214 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2018-12-31 05:54:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:54:52,145 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2018-12-31 05:54:52,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-31 05:54:52,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-12-31 05:54:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:54:52,148 INFO L225 Difference]: With dead ends: 89 [2018-12-31 05:54:52,148 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 05:54:52,149 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2018-12-31 05:54:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 05:54:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 05:54:52,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 05:54:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 05:54:52,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-12-31 05:54:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:54:52,150 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 05:54:52,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-31 05:54:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 05:54:52,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 05:54:52,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 05:54:52,237 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 05:54:52,237 INFO L448 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-12-31 05:54:52,237 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-12-31 05:54:52,238 INFO L444 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1023) [2018-12-31 05:54:52,238 INFO L448 ceAbstractionStarter]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2018-12-31 05:54:52,238 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2018-12-31 05:54:52,238 INFO L451 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: true [2018-12-31 05:54:52,238 INFO L448 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2018-12-31 05:54:52,238 INFO L448 ceAbstractionStarter]: For program point L9(lines 9 23) no Hoare annotation was computed. [2018-12-31 05:54:52,238 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-31 05:54:52,239 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-12-31 05:54:52,239 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 05:54:52,239 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 05:54:52,239 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-12-31 05:54:52,239 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-31 05:54:52,239 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-31 05:54:52,239 INFO L451 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-12-31 05:54:52,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:54:52 BoogieIcfgContainer [2018-12-31 05:54:52,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 05:54:52,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 05:54:52,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 05:54:52,253 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 05:54:52,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:54:48" (3/4) ... [2018-12-31 05:54:52,256 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 05:54:52,267 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-31 05:54:52,267 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 05:54:52,267 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 05:54:52,322 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 05:54:52,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 05:54:52,323 INFO L168 Benchmark]: Toolchain (without parser) took 4947.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 952.7 MB in the beginning and 931.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 151.9 MB. Max. memory is 11.5 GB. [2018-12-31 05:54:52,324 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-12-31 05:54:52,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.41 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. [2018-12-31 05:54:52,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.23 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. [2018-12-31 05:54:52,326 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 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. [2018-12-31 05:54:52,326 INFO L168 Benchmark]: RCFGBuilder took 473.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-31 05:54:52,327 INFO L168 Benchmark]: TraceAbstraction took 3993.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.8 MB in the end (delta: 174.3 MB). Peak memory consumption was 174.3 MB. Max. memory is 11.5 GB. [2018-12-31 05:54:52,328 INFO L168 Benchmark]: Witness Printer took 69.44 ms. Allocated memory is still 1.2 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 05:54:52,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 331.41 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 47.23 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 26.84 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 473.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3993.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.8 MB in the end (delta: 174.3 MB). Peak memory consumption was 174.3 MB. Max. memory is 11.5 GB. * Witness Printer took 69.44 ms. Allocated memory is still 1.2 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1023 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 166 SDslu, 106 SDs, 0 SdLazy, 225 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=6, 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, 7 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 20 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 239 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 8369 SizeOfPredicates, 9 NumberOfNonLiveVariables, 251 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 137/218 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...