./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-lit/jm2006_true-unreach-call_true-termination.c.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-lit/jm2006_true-unreach-call_true-termination.c.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 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 06:14:27,251 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 06:14:27,253 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 06:14:27,268 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 06:14:27,268 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 06:14:27,269 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 06:14:27,271 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 06:14:27,273 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 06:14:27,275 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 06:14:27,276 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 06:14:27,277 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 06:14:27,277 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 06:14:27,278 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 06:14:27,279 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 06:14:27,280 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 06:14:27,281 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 06:14:27,282 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 06:14:27,284 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 06:14:27,286 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 06:14:27,288 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 06:14:27,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 06:14:27,290 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 06:14:27,293 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 06:14:27,294 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 06:14:27,294 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 06:14:27,295 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 06:14:27,296 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 06:14:27,297 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 06:14:27,298 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 06:14:27,299 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 06:14:27,299 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 06:14:27,300 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 06:14:27,300 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 06:14:27,303 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 06:14:27,307 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 06:14:27,308 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 06:14:27,308 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 06:14:27,332 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 06:14:27,332 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 06:14:27,333 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 06:14:27,333 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 06:14:27,334 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 06:14:27,334 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 06:14:27,334 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 06:14:27,334 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 06:14:27,334 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 06:14:27,335 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 06:14:27,335 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 06:14:27,335 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 06:14:27,335 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 06:14:27,335 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 06:14:27,336 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 06:14:27,336 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 06:14:27,336 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 06:14:27,336 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 06:14:27,336 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 06:14:27,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 06:14:27,337 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 06:14:27,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 06:14:27,337 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 06:14:27,337 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 06:14:27,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 06:14:27,338 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 06:14:27,338 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 06:14:27,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 06:14:27,338 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 -> 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 [2018-12-31 06:14:27,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 06:14:27,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 06:14:27,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 06:14:27,402 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 06:14:27,402 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 06:14:27,403 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-12-31 06:14:27,467 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac90eb4f/bfb013a3e3e949f79e11e8ebd0e78c2a/FLAG801d502eb [2018-12-31 06:14:27,886 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 06:14:27,887 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-12-31 06:14:27,892 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac90eb4f/bfb013a3e3e949f79e11e8ebd0e78c2a/FLAG801d502eb [2018-12-31 06:14:28,270 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac90eb4f/bfb013a3e3e949f79e11e8ebd0e78c2a [2018-12-31 06:14:28,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 06:14:28,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 06:14:28,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 06:14:28,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 06:14:28,283 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 06:14:28,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3361ed09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28, skipping insertion in model container [2018-12-31 06:14:28,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 06:14:28,318 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 06:14:28,562 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:14:28,567 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 06:14:28,587 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 06:14:28,603 INFO L195 MainTranslator]: Completed translation [2018-12-31 06:14:28,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28 WrapperNode [2018-12-31 06:14:28,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 06:14:28,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 06:14:28,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 06:14:28,605 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 06:14:28,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 06:14:28,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 06:14:28,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 06:14:28,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 06:14:28,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (1/1) ... [2018-12-31 06:14:28,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 06:14:28,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 06:14:28,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 06:14:28,665 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 06:14:28,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (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 06:14:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 06:14:28,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 06:14:28,990 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 06:14:28,990 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-31 06:14:28,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:14:28 BoogieIcfgContainer [2018-12-31 06:14:28,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 06:14:28,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 06:14:28,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 06:14:28,996 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 06:14:28,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 06:14:28" (1/3) ... [2018-12-31 06:14:28,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45558a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:14:28, skipping insertion in model container [2018-12-31 06:14:28,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 06:14:28" (2/3) ... [2018-12-31 06:14:28,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45558a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 06:14:28, skipping insertion in model container [2018-12-31 06:14:28,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:14:28" (3/3) ... [2018-12-31 06:14:29,000 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_true-unreach-call_true-termination.c.i [2018-12-31 06:14:29,011 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 06:14:29,022 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 06:14:29,038 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 06:14:29,071 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 06:14:29,072 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 06:14:29,072 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 06:14:29,072 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 06:14:29,072 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 06:14:29,072 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 06:14:29,072 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 06:14:29,073 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 06:14:29,073 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 06:14:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2018-12-31 06:14:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 06:14:29,096 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:29,097 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-31 06:14:29,101 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 922201356, now seen corresponding path program 1 times [2018-12-31 06:14:29,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:29,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:29,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:29,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:29,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:29,229 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 06:14:29,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:14:29,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 06:14:29,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 06:14:29,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 06:14:29,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 06:14:29,256 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-12-31 06:14:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:29,273 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2018-12-31 06:14:29,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 06:14:29,274 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-12-31 06:14:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:29,285 INFO L225 Difference]: With dead ends: 19 [2018-12-31 06:14:29,286 INFO L226 Difference]: Without dead ends: 7 [2018-12-31 06:14:29,289 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 06:14:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-31 06:14:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-31 06:14:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-31 06:14:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-31 06:14:29,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2018-12-31 06:14:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:29,318 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-31 06:14:29,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 06:14:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-31 06:14:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-31 06:14:29,319 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:29,319 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-12-31 06:14:29,320 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:29,320 INFO L82 PathProgramCache]: Analyzing trace with hash 922082192, now seen corresponding path program 1 times [2018-12-31 06:14:29,320 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:29,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:29,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:29,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:29,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:29,593 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 06:14:29,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 06:14:29,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 06:14:29,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 06:14:29,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 06:14:29,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 06:14:29,597 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-12-31 06:14:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:29,889 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-12-31 06:14:29,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 06:14:29,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-12-31 06:14:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:29,893 INFO L225 Difference]: With dead ends: 12 [2018-12-31 06:14:29,893 INFO L226 Difference]: Without dead ends: 8 [2018-12-31 06:14:29,894 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 06:14:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-31 06:14:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-31 06:14:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-31 06:14:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-12-31 06:14:29,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-12-31 06:14:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:29,901 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-12-31 06:14:29,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 06:14:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-12-31 06:14:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-31 06:14:29,903 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:29,903 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-31 06:14:29,903 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:29,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:29,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1478617325, now seen corresponding path program 1 times [2018-12-31 06:14:29,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:29,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:29,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:29,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:29,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:30,289 WARN L181 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-12-31 06:14:30,366 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 06:14:30,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:14:30,367 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 06:14:30,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:30,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:14:30,640 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 06:14:30,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:14:30,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-12-31 06:14:30,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 06:14:30,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 06:14:30,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-31 06:14:30,661 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-12-31 06:14:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:30,956 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-12-31 06:14:30,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 06:14:30,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-12-31 06:14:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:30,959 INFO L225 Difference]: With dead ends: 13 [2018-12-31 06:14:30,960 INFO L226 Difference]: Without dead ends: 9 [2018-12-31 06:14:30,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-31 06:14:30,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-31 06:14:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-31 06:14:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-31 06:14:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-12-31 06:14:30,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-12-31 06:14:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:30,964 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-12-31 06:14:30,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 06:14:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-12-31 06:14:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-31 06:14:30,965 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:30,965 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-12-31 06:14:30,966 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1409108976, now seen corresponding path program 2 times [2018-12-31 06:14:30,966 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:30,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:30,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:30,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 06:14:30,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:31,282 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-12-31 06:14:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:31,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:14:31,406 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 06:14:31,427 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 06:14:31,470 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 06:14:31,470 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:14:31,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:14:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:31,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:14:31,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-12-31 06:14:31,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-31 06:14:31,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-31 06:14:31,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-31 06:14:31,655 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-12-31 06:14:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:31,984 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-12-31 06:14:31,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 06:14:31,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-12-31 06:14:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:31,986 INFO L225 Difference]: With dead ends: 17 [2018-12-31 06:14:31,986 INFO L226 Difference]: Without dead ends: 11 [2018-12-31 06:14:31,987 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-12-31 06:14:31,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-12-31 06:14:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-31 06:14:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-31 06:14:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-12-31 06:14:31,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-12-31 06:14:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:31,991 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-12-31 06:14:31,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-31 06:14:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-12-31 06:14:31,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 06:14:31,992 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 06:14:31,992 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2018-12-31 06:14:31,992 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 06:14:31,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 06:14:31,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1290413136, now seen corresponding path program 3 times [2018-12-31 06:14:31,993 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 06:14:31,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 06:14:31,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:31,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 06:14:31,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 06:14:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 06:14:32,326 WARN L181 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-12-31 06:14:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-31 06:14:32,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 06:14:32,340 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 06:14:32,351 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 06:14:32,371 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-31 06:14:32,371 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 06:14:32,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 06:14:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 06:14:32,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 06:14:32,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-12-31 06:14:32,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-31 06:14:32,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-31 06:14:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-12-31 06:14:32,624 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 12 states. [2018-12-31 06:14:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 06:14:32,903 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2018-12-31 06:14:32,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-31 06:14:32,904 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2018-12-31 06:14:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 06:14:32,904 INFO L225 Difference]: With dead ends: 14 [2018-12-31 06:14:32,904 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 06:14:32,906 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-12-31 06:14:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 06:14:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 06:14:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 06:14:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 06:14:32,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-12-31 06:14:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 06:14:32,907 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 06:14:32,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-31 06:14:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 06:14:32,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 06:14:32,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 06:14:33,291 WARN L181 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 9 [2018-12-31 06:14:33,295 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 06:14:33,296 INFO L451 ceAbstractionStarter]: At program point L21(lines 21 23) the Hoare annotation is: true [2018-12-31 06:14:33,296 INFO L444 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-12-31 06:14:33,296 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 10 25) no Hoare annotation was computed. [2018-12-31 06:14:33,296 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-31 06:14:33,296 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 06:14:33,296 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 06:14:33,297 INFO L451 ceAbstractionStarter]: At program point L24(lines 10 25) the Hoare annotation is: true [2018-12-31 06:14:33,297 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-31 06:14:33,297 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-12-31 06:14:33,297 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-31 06:14:33,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 06:14:33 BoogieIcfgContainer [2018-12-31 06:14:33,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 06:14:33,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 06:14:33,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 06:14:33,311 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 06:14:33,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 06:14:28" (3/4) ... [2018-12-31 06:14:33,316 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 06:14:33,328 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-31 06:14:33,329 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 06:14:33,383 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 06:14:33,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 06:14:33,384 INFO L168 Benchmark]: Toolchain (without parser) took 5108.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 951.4 MB in the beginning and 907.9 MB in the end (delta: 43.5 MB). Peak memory consumption was 169.8 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:33,386 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 06:14:33,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:33,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.68 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:14:33,387 INFO L168 Benchmark]: Boogie Preprocessor took 24.96 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 06:14:33,388 INFO L168 Benchmark]: RCFGBuilder took 325.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:33,389 INFO L168 Benchmark]: TraceAbstraction took 4318.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 914.6 MB in the end (delta: 186.7 MB). Peak memory consumption was 186.7 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:33,389 INFO L168 Benchmark]: Witness Printer took 72.85 ms. Allocated memory is still 1.2 GB. Free memory was 914.6 MB in the beginning and 907.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-31 06:14:33,394 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 325.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 34.68 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.96 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 325.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4318.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 914.6 MB in the end (delta: 186.7 MB). Peak memory consumption was 186.7 MB. Max. memory is 11.5 GB. * Witness Printer took 72.85 ms. Allocated memory is still 1.2 GB. Free memory was 914.6 MB in the beginning and 907.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. 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: 17]: Loop Invariant Derived loop invariant: x + j <= y + i && y + i <= x + j - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 39 SDs, 0 SdLazy, 159 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 17 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 133 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 3671 SizeOfPredicates, 18 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...