./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/bitvector-loops/diamond_false-unreach-call2.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/bitvector-loops/diamond_false-unreach-call2.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 dee4f98e3deb83265bbf70c3b5c0f3c1ff37b06c ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-30 16:03:05,251 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-30 16:03:05,253 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-30 16:03:05,265 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-30 16:03:05,265 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-30 16:03:05,266 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-30 16:03:05,268 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-30 16:03:05,270 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-30 16:03:05,272 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-30 16:03:05,273 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-30 16:03:05,274 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-30 16:03:05,274 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-30 16:03:05,275 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-30 16:03:05,276 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-30 16:03:05,277 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-30 16:03:05,278 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-30 16:03:05,279 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-30 16:03:05,281 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-30 16:03:05,283 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-30 16:03:05,285 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-30 16:03:05,286 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-30 16:03:05,288 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-30 16:03:05,291 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-30 16:03:05,291 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-30 16:03:05,291 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-30 16:03:05,293 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-30 16:03:05,294 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-30 16:03:05,295 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-30 16:03:05,295 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-30 16:03:05,297 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-30 16:03:05,297 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-30 16:03:05,298 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-30 16:03:05,298 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-30 16:03:05,298 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-30 16:03:05,300 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-30 16:03:05,301 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-30 16:03:05,301 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-30 16:03:05,317 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-30 16:03:05,318 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-30 16:03:05,320 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-30 16:03:05,320 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-30 16:03:05,320 INFO L133 SettingsManager]: * Use SBE=true [2018-12-30 16:03:05,320 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-30 16:03:05,320 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-30 16:03:05,324 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-30 16:03:05,324 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-30 16:03:05,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-30 16:03:05,324 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-30 16:03:05,324 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-30 16:03:05,324 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-30 16:03:05,325 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-30 16:03:05,325 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-30 16:03:05,325 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-30 16:03:05,325 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-30 16:03:05,325 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-30 16:03:05,327 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-30 16:03:05,327 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-30 16:03:05,327 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-30 16:03:05,327 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-30 16:03:05,327 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-30 16:03:05,328 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-30 16:03:05,328 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-30 16:03:05,328 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-30 16:03:05,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-30 16:03:05,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-30 16:03:05,328 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 -> dee4f98e3deb83265bbf70c3b5c0f3c1ff37b06c [2018-12-30 16:03:05,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-30 16:03:05,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-30 16:03:05,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-30 16:03:05,417 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-30 16:03:05,418 INFO L276 PluginConnector]: CDTParser initialized [2018-12-30 16:03:05,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/bitvector-loops/diamond_false-unreach-call2.i [2018-12-30 16:03:05,482 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc847ad4/98d6e363af52479ca644395bd54dc14f/FLAG9d492615c [2018-12-30 16:03:05,941 INFO L307 CDTParser]: Found 1 translation units. [2018-12-30 16:03:05,942 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/bitvector-loops/diamond_false-unreach-call2.i [2018-12-30 16:03:05,949 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc847ad4/98d6e363af52479ca644395bd54dc14f/FLAG9d492615c [2018-12-30 16:03:06,291 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc847ad4/98d6e363af52479ca644395bd54dc14f [2018-12-30 16:03:06,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-30 16:03:06,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-30 16:03:06,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-30 16:03:06,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-30 16:03:06,302 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-30 16:03:06,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778b065d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06, skipping insertion in model container [2018-12-30 16:03:06,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-30 16:03:06,337 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-30 16:03:06,558 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 16:03:06,570 INFO L191 MainTranslator]: Completed pre-run [2018-12-30 16:03:06,603 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-30 16:03:06,622 INFO L195 MainTranslator]: Completed translation [2018-12-30 16:03:06,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06 WrapperNode [2018-12-30 16:03:06,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-30 16:03:06,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-30 16:03:06,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-30 16:03:06,625 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-30 16:03:06,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-30 16:03:06,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-30 16:03:06,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-30 16:03:06,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-30 16:03:06,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (1/1) ... [2018-12-30 16:03:06,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-30 16:03:06,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-30 16:03:06,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-30 16:03:06,733 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-30 16:03:06,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (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 [2018-12-30 16:03:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-30 16:03:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-30 16:03:07,246 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-30 16:03:07,248 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-30 16:03:07,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 04:03:07 BoogieIcfgContainer [2018-12-30 16:03:07,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-30 16:03:07,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-30 16:03:07,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-30 16:03:07,254 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-30 16:03:07,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.12 04:03:06" (1/3) ... [2018-12-30 16:03:07,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aee0220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 04:03:07, skipping insertion in model container [2018-12-30 16:03:07,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.12 04:03:06" (2/3) ... [2018-12-30 16:03:07,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aee0220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.12 04:03:07, skipping insertion in model container [2018-12-30 16:03:07,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 04:03:07" (3/3) ... [2018-12-30 16:03:07,259 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_false-unreach-call2.i [2018-12-30 16:03:07,277 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-30 16:03:07,290 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-30 16:03:07,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-30 16:03:07,347 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-30 16:03:07,348 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-30 16:03:07,348 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-30 16:03:07,349 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-30 16:03:07,349 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-30 16:03:07,349 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-30 16:03:07,350 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-30 16:03:07,350 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-30 16:03:07,350 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-30 16:03:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-30 16:03:07,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-30 16:03:07,374 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:03:07,375 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-30 16:03:07,378 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:03:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:03:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash 31771204, now seen corresponding path program 1 times [2018-12-30 16:03:07,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:03:07,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:03:07,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:07,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:03:07,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:03:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:03:07,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:03:07,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-30 16:03:07,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-30 16:03:07,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-30 16:03:07,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-30 16:03:07,521 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-30 16:03:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:03:07,540 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2018-12-30 16:03:07,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-30 16:03:07,541 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2018-12-30 16:03:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:03:07,553 INFO L225 Difference]: With dead ends: 26 [2018-12-30 16:03:07,553 INFO L226 Difference]: Without dead ends: 16 [2018-12-30 16:03:07,557 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 [2018-12-30 16:03:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-30 16:03:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-30 16:03:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-30 16:03:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 26 transitions. [2018-12-30 16:03:07,594 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 26 transitions. Word has length 5 [2018-12-30 16:03:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:03:07,594 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 26 transitions. [2018-12-30 16:03:07,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-30 16:03:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 26 transitions. [2018-12-30 16:03:07,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-30 16:03:07,595 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:03:07,595 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-30 16:03:07,596 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:03:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:03:07,596 INFO L82 PathProgramCache]: Analyzing trace with hash 29864580, now seen corresponding path program 1 times [2018-12-30 16:03:07,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:03:07,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:03:07,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:07,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:03:07,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:03:07,798 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 5 [2018-12-30 16:03:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:03:07,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:03:07,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-30 16:03:07,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:03:07,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:03:07,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:03:07,807 INFO L87 Difference]: Start difference. First operand 16 states and 26 transitions. Second operand 3 states. [2018-12-30 16:03:07,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:03:07,971 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2018-12-30 16:03:07,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:03:07,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-12-30 16:03:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:03:07,975 INFO L225 Difference]: With dead ends: 22 [2018-12-30 16:03:07,975 INFO L226 Difference]: Without dead ends: 18 [2018-12-30 16:03:07,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:03:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-30 16:03:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-30 16:03:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-30 16:03:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2018-12-30 16:03:07,981 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2018-12-30 16:03:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:03:07,981 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2018-12-30 16:03:07,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:03:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2018-12-30 16:03:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-30 16:03:07,982 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:03:07,982 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:03:07,983 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:03:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:03:07,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1273519218, now seen corresponding path program 1 times [2018-12-30 16:03:07,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:03:07,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:03:07,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:07,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:03:07,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:03:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:03:08,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:03:08,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 16:03:08,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:03:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:03:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:03:08,140 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2018-12-30 16:03:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:03:08,430 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2018-12-30 16:03:08,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:03:08,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-30 16:03:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:03:08,433 INFO L225 Difference]: With dead ends: 47 [2018-12-30 16:03:08,433 INFO L226 Difference]: Without dead ends: 32 [2018-12-30 16:03:08,434 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 [2018-12-30 16:03:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-30 16:03:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-12-30 16:03:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-30 16:03:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2018-12-30 16:03:08,441 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2018-12-30 16:03:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:03:08,441 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2018-12-30 16:03:08,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:03:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2018-12-30 16:03:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-30 16:03:08,442 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:03:08,442 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:03:08,443 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:03:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:03:08,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1974583796, now seen corresponding path program 1 times [2018-12-30 16:03:08,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:03:08,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:03:08,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:08,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:03:08,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:03:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:03:09,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-30 16:03:09,188 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 [2018-12-30 16:03:09,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:03:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:03:09,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-30 16:03:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:03:09,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-30 16:03:09,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-12-30 16:03:09,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-30 16:03:09,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-30 16:03:09,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-12-30 16:03:09,461 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand 14 states. [2018-12-30 16:03:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:03:10,117 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2018-12-30 16:03:10,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-30 16:03:10,121 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2018-12-30 16:03:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:03:10,122 INFO L225 Difference]: With dead ends: 45 [2018-12-30 16:03:10,122 INFO L226 Difference]: Without dead ends: 41 [2018-12-30 16:03:10,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-12-30 16:03:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-30 16:03:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-12-30 16:03:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-30 16:03:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2018-12-30 16:03:10,130 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 16 [2018-12-30 16:03:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:03:10,130 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2018-12-30 16:03:10,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-30 16:03:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2018-12-30 16:03:10,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-30 16:03:10,131 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:03:10,132 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:03:10,132 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:03:10,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:03:10,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1309266250, now seen corresponding path program 1 times [2018-12-30 16:03:10,132 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:03:10,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:03:10,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:10,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:03:10,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-30 16:03:12,246 WARN L181 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 29 DAG size of output: 13 [2018-12-30 16:03:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-30 16:03:12,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-30 16:03:12,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-30 16:03:12,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-30 16:03:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-30 16:03:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:03:12,249 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 3 states. [2018-12-30 16:03:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-30 16:03:12,367 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2018-12-30 16:03:12,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-30 16:03:12,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-30 16:03:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-30 16:03:12,370 INFO L225 Difference]: With dead ends: 58 [2018-12-30 16:03:12,370 INFO L226 Difference]: Without dead ends: 43 [2018-12-30 16:03:12,371 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-30 16:03:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-30 16:03:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-12-30 16:03:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-30 16:03:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-12-30 16:03:12,378 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 16 [2018-12-30 16:03:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-30 16:03:12,379 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-12-30 16:03:12,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-30 16:03:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-12-30 16:03:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-30 16:03:12,381 INFO L394 BasicCegarLoop]: Found error trace [2018-12-30 16:03:12,381 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-30 16:03:12,381 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-30 16:03:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-30 16:03:12,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1301479604, now seen corresponding path program 1 times [2018-12-30 16:03:12,382 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-30 16:03:12,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-30 16:03:12,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:12,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-30 16:03:12,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-30 16:03:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-30 16:03:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-30 16:03:12,479 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-30 16:03:12,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.12 04:03:12 BoogieIcfgContainer [2018-12-30 16:03:12,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-30 16:03:12,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-30 16:03:12,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-30 16:03:12,498 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-30 16:03:12,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.12 04:03:07" (3/4) ... [2018-12-30 16:03:12,502 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-30 16:03:12,557 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-30 16:03:12,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-30 16:03:12,558 INFO L168 Benchmark]: Toolchain (without parser) took 6262.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 951.4 MB in the beginning and 948.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 113.6 MB. Max. memory is 11.5 GB. [2018-12-30 16:03:12,559 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-30 16:03:12,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.82 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. [2018-12-30 16:03:12,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.17 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. [2018-12-30 16:03:12,561 INFO L168 Benchmark]: Boogie Preprocessor took 47.14 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-30 16:03:12,562 INFO L168 Benchmark]: RCFGBuilder took 515.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-30 16:03:12,563 INFO L168 Benchmark]: TraceAbstraction took 5247.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 955.2 MB in the end (delta: 129.6 MB). Peak memory consumption was 129.6 MB. Max. memory is 11.5 GB. [2018-12-30 16:03:12,563 INFO L168 Benchmark]: Witness Printer took 59.28 ms. Allocated memory is still 1.1 GB. Free memory was 955.2 MB in the beginning and 948.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-30 16:03:12,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.82 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 60.17 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 47.14 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 515.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5247.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 955.2 MB in the end (delta: 129.6 MB). Peak memory consumption was 129.6 MB. Max. memory is 11.5 GB. * Witness Printer took 59.28 ms. Allocated memory is still 1.1 GB. Free memory was 955.2 MB in the beginning and 948.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int x = 0; [L11] unsigned int y = __VERIFIER_nondet_uint(); [L12] COND TRUE x < 99 [L13] COND FALSE !(y % 2 == 0) [L14] x += 2 [L15] COND FALSE !(y % 2 == 0) [L16] x -= 2 [L17] COND FALSE !(y % 2 == 0) [L18] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L21] COND FALSE !(y % 2 == 0) [L22] x += 2 [L23] COND FALSE !(y % 2 == 0) [L24] x -= 4 [L25] COND FALSE !(y % 2 == 0) [L26] x += 4 [L27] COND FALSE !(y % 2 == 0) [L28] x += 2 [L29] COND FALSE !(y % 2 == 0) [L30] x -= 4 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L12] COND FALSE !(x < 99) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. UNSAFE Result, 5.1s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 30 SDslu, 22 SDs, 0 SdLazy, 316 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5126 SizeOfPredicates, 1 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...