./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/sum01_bug02_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loops/sum01_bug02_false-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5465a084053aead702161d951dd339bfa1665d5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2018-12-31 05:38:07,424 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 05:38:07,427 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 05:38:07,446 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 05:38:07,447 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 05:38:07,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 05:38:07,450 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 05:38:07,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 05:38:07,456 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 05:38:07,457 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 05:38:07,459 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 05:38:07,460 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 05:38:07,461 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 05:38:07,462 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 05:38:07,470 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 05:38:07,474 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 05:38:07,475 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 05:38:07,479 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 05:38:07,481 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 05:38:07,486 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 05:38:07,487 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 05:38:07,494 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 05:38:07,497 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 05:38:07,498 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 05:38:07,498 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 05:38:07,499 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 05:38:07,500 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 05:38:07,502 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 05:38:07,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 05:38:07,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 05:38:07,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 05:38:07,505 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 05:38:07,505 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 05:38:07,505 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 05:38:07,506 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 05:38:07,507 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 05:38:07,507 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 05:38:07,523 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 05:38:07,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 05:38:07,524 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 05:38:07,525 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 05:38:07,525 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 05:38:07,525 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 05:38:07,525 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 05:38:07,525 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 05:38:07,526 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 05:38:07,526 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 05:38:07,526 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 05:38:07,526 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 05:38:07,526 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 05:38:07,526 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 05:38:07,527 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 05:38:07,527 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 05:38:07,527 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 05:38:07,527 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 05:38:07,527 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 05:38:07,527 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 05:38:07,528 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 05:38:07,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 05:38:07,528 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 05:38:07,528 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 05:38:07,528 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 05:38:07,529 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 05:38:07,529 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 05:38:07,529 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 05:38:07,529 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 -> c5465a084053aead702161d951dd339bfa1665d5 [2018-12-31 05:38:07,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 05:38:07,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 05:38:07,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 05:38:07,597 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 05:38:07,598 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 05:38:07,600 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-12-31 05:38:07,670 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962b3e30d/2fdaa5a43be6420293f105f486685e35/FLAGe58ee0127 [2018-12-31 05:38:08,180 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 05:38:08,183 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-12-31 05:38:08,190 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962b3e30d/2fdaa5a43be6420293f105f486685e35/FLAGe58ee0127 [2018-12-31 05:38:08,522 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962b3e30d/2fdaa5a43be6420293f105f486685e35 [2018-12-31 05:38:08,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 05:38:08,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 05:38:08,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 05:38:08,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 05:38:08,536 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 05:38:08,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3026fc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08, skipping insertion in model container [2018-12-31 05:38:08,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 05:38:08,569 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 05:38:08,752 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:38:08,757 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 05:38:08,777 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 05:38:08,796 INFO L195 MainTranslator]: Completed translation [2018-12-31 05:38:08,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08 WrapperNode [2018-12-31 05:38:08,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 05:38:08,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 05:38:08,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 05:38:08,799 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 05:38:08,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 05:38:08,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 05:38:08,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 05:38:08,838 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 05:38:08,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... [2018-12-31 05:38:08,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 05:38:08,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 05:38:08,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 05:38:08,863 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 05:38:08,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 05:38:08,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 05:38:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 05:38:09,171 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 05:38:09,172 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-31 05:38:09,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:38:09 BoogieIcfgContainer [2018-12-31 05:38:09,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 05:38:09,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 05:38:09,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 05:38:09,177 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 05:38:09,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:38:08" (1/3) ... [2018-12-31 05:38:09,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268094b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:38:09, skipping insertion in model container [2018-12-31 05:38:09,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:38:08" (2/3) ... [2018-12-31 05:38:09,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268094b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:38:09, skipping insertion in model container [2018-12-31 05:38:09,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:38:09" (3/3) ... [2018-12-31 05:38:09,182 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02_false-unreach-call_true-termination.i [2018-12-31 05:38:09,194 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 05:38:09,203 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 05:38:09,222 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 05:38:09,255 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 05:38:09,256 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 05:38:09,256 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 05:38:09,256 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 05:38:09,257 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 05:38:09,257 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 05:38:09,257 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 05:38:09,257 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 05:38:09,258 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 05:38:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-12-31 05:38:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-31 05:38:09,281 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:09,283 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-31 05:38:09,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash 30170436, now seen corresponding path program 1 times [2018-12-31 05:38:09,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:09,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:09,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:09,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:09,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:09,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:38:09,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 05:38:09,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 05:38:09,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 05:38:09,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 05:38:09,447 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-12-31 05:38:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:09,462 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2018-12-31 05:38:09,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 05:38:09,463 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2018-12-31 05:38:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:09,474 INFO L225 Difference]: With dead ends: 19 [2018-12-31 05:38:09,474 INFO L226 Difference]: Without dead ends: 9 [2018-12-31 05:38:09,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 05:38:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-31 05:38:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-31 05:38:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-31 05:38:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-12-31 05:38:09,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2018-12-31 05:38:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:09,510 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-12-31 05:38:09,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 05:38:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-12-31 05:38:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-31 05:38:09,511 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:09,511 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-31 05:38:09,511 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:09,512 INFO L82 PathProgramCache]: Analyzing trace with hash 29783153, now seen corresponding path program 1 times [2018-12-31 05:38:09,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:09,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:09,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:09,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:09,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:09,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 05:38:09,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 05:38:09,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 05:38:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 05:38:09,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 05:38:09,680 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-12-31 05:38:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:09,781 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-12-31 05:38:09,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 05:38:09,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-12-31 05:38:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:09,783 INFO L225 Difference]: With dead ends: 17 [2018-12-31 05:38:09,783 INFO L226 Difference]: Without dead ends: 13 [2018-12-31 05:38:09,784 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 05:38:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-31 05:38:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-31 05:38:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-31 05:38:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-12-31 05:38:09,788 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2018-12-31 05:38:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:09,789 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-12-31 05:38:09,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 05:38:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-12-31 05:38:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 05:38:09,790 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:09,790 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:38:09,790 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:09,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:09,790 INFO L82 PathProgramCache]: Analyzing trace with hash -963514282, now seen corresponding path program 1 times [2018-12-31 05:38:09,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:09,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:09,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:09,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:09,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:10,195 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-12-31 05:38:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:10,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:38:10,417 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 05:38:10,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:10,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:38:10,913 WARN L181 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-12-31 05:38:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:10,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:38:10,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-12-31 05:38:10,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 05:38:10,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 05:38:10,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-12-31 05:38:10,989 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 13 states. [2018-12-31 05:38:11,671 WARN L181 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-12-31 05:38:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:11,812 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-12-31 05:38:11,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-31 05:38:11,814 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2018-12-31 05:38:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:11,818 INFO L225 Difference]: With dead ends: 35 [2018-12-31 05:38:11,819 INFO L226 Difference]: Without dead ends: 29 [2018-12-31 05:38:11,820 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2018-12-31 05:38:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-31 05:38:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2018-12-31 05:38:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-31 05:38:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-12-31 05:38:11,827 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2018-12-31 05:38:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:11,828 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-12-31 05:38:11,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 05:38:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2018-12-31 05:38:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-31 05:38:11,830 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:11,830 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 05:38:11,830 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:11,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:11,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1771006013, now seen corresponding path program 1 times [2018-12-31 05:38:11,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:11,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:11,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:11,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:11,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:11,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:38:11,951 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 05:38:11,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:11,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:38:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:12,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:38:12,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-12-31 05:38:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 05:38:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 05:38:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-12-31 05:38:12,049 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2018-12-31 05:38:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:12,128 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-12-31 05:38:12,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 05:38:12,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-12-31 05:38:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:12,130 INFO L225 Difference]: With dead ends: 30 [2018-12-31 05:38:12,130 INFO L226 Difference]: Without dead ends: 18 [2018-12-31 05:38:12,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-12-31 05:38:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-31 05:38:12,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-31 05:38:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-31 05:38:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-12-31 05:38:12,136 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-12-31 05:38:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:12,136 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-12-31 05:38:12,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 05:38:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-12-31 05:38:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-31 05:38:12,137 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:12,137 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1] [2018-12-31 05:38:12,138 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:12,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1276819616, now seen corresponding path program 2 times [2018-12-31 05:38:12,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:12,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:12,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:12,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 05:38:12,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-31 05:38:12,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:38:12,452 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 05:38:12,461 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 05:38:12,488 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 05:38:12,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 05:38:12,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:38:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:12,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:38:12,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2018-12-31 05:38:12,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-31 05:38:12,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-31 05:38:12,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-12-31 05:38:12,835 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 18 states. [2018-12-31 05:38:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:13,663 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2018-12-31 05:38:13,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-31 05:38:13,664 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-12-31 05:38:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:13,665 INFO L225 Difference]: With dead ends: 39 [2018-12-31 05:38:13,666 INFO L226 Difference]: Without dead ends: 33 [2018-12-31 05:38:13,667 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2018-12-31 05:38:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-31 05:38:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2018-12-31 05:38:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-31 05:38:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-12-31 05:38:13,672 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 17 [2018-12-31 05:38:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:13,672 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-12-31 05:38:13,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-31 05:38:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-12-31 05:38:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-31 05:38:13,673 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:13,673 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-12-31 05:38:13,674 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1243140318, now seen corresponding path program 2 times [2018-12-31 05:38:13,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:13,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:13,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:13,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 05:38:13,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:13,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:38:13,760 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 05:38:13,776 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 05:38:13,785 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 05:38:13,785 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 05:38:13,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:38:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:13,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:38:13,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-12-31 05:38:13,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-31 05:38:13,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-31 05:38:13,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-12-31 05:38:13,874 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 12 states. [2018-12-31 05:38:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:13,935 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-12-31 05:38:13,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 05:38:13,937 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2018-12-31 05:38:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:13,938 INFO L225 Difference]: With dead ends: 32 [2018-12-31 05:38:13,938 INFO L226 Difference]: Without dead ends: 24 [2018-12-31 05:38:13,940 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-12-31 05:38:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-31 05:38:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-12-31 05:38:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 05:38:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-12-31 05:38:13,945 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2018-12-31 05:38:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:13,945 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-12-31 05:38:13,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-31 05:38:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-12-31 05:38:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-31 05:38:13,946 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:13,946 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-12-31 05:38:13,948 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:13,949 INFO L82 PathProgramCache]: Analyzing trace with hash -242812025, now seen corresponding path program 3 times [2018-12-31 05:38:13,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:13,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:13,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:13,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 05:38:13,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:14,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:38:14,065 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 05:38:14,084 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 05:38:14,133 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-31 05:38:14,133 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 05:38:14,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:38:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:14,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:38:14,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-12-31 05:38:14,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-31 05:38:14,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-31 05:38:14,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-12-31 05:38:14,267 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 16 states. [2018-12-31 05:38:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:14,653 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-31 05:38:14,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-31 05:38:14,654 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2018-12-31 05:38:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:14,656 INFO L225 Difference]: With dead ends: 36 [2018-12-31 05:38:14,656 INFO L226 Difference]: Without dead ends: 28 [2018-12-31 05:38:14,656 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-12-31 05:38:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-31 05:38:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-12-31 05:38:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-31 05:38:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-31 05:38:14,662 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2018-12-31 05:38:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:14,662 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-31 05:38:14,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-31 05:38:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-31 05:38:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 05:38:14,663 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:14,675 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-12-31 05:38:14,676 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:14,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2047865492, now seen corresponding path program 4 times [2018-12-31 05:38:14,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:14,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:14,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:14,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 05:38:14,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 05:38:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:14,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 05:38:14,921 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 05:38:14,930 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 05:38:14,943 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 05:38:14,943 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 05:38:14,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 05:38:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 05:38:15,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 05:38:15,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-12-31 05:38:15,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-31 05:38:15,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-31 05:38:15,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-12-31 05:38:15,128 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 20 states. [2018-12-31 05:38:15,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 05:38:15,239 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-12-31 05:38:15,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-31 05:38:15,240 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2018-12-31 05:38:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 05:38:15,241 INFO L225 Difference]: With dead ends: 41 [2018-12-31 05:38:15,241 INFO L226 Difference]: Without dead ends: 33 [2018-12-31 05:38:15,243 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-12-31 05:38:15,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-31 05:38:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2018-12-31 05:38:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-31 05:38:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-12-31 05:38:15,248 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 25 [2018-12-31 05:38:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 05:38:15,249 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-12-31 05:38:15,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-31 05:38:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-12-31 05:38:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-31 05:38:15,250 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 05:38:15,250 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-12-31 05:38:15,250 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 05:38:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 05:38:15,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1174166319, now seen corresponding path program 5 times [2018-12-31 05:38:15,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 05:38:15,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 05:38:15,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:15,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 05:38:15,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 05:38:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:38:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 05:38:15,313 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 05:38:15,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:38:15 BoogieIcfgContainer [2018-12-31 05:38:15,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 05:38:15,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 05:38:15,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 05:38:15,338 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 05:38:15,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:38:09" (3/4) ... [2018-12-31 05:38:15,342 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 05:38:15,400 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 05:38:15,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 05:38:15,401 INFO L168 Benchmark]: Toolchain (without parser) took 6873.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:15,403 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 05:38:15,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.37 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 05:38:15,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.14 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 05:38:15,404 INFO L168 Benchmark]: Boogie Preprocessor took 24.39 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 05:38:15,406 INFO L168 Benchmark]: RCFGBuilder took 309.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -152.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:15,408 INFO L168 Benchmark]: TraceAbstraction took 6164.32 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:15,409 INFO L168 Benchmark]: Witness Printer took 62.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2018-12-31 05:38:15,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 267.37 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 39.14 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 24.39 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 309.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -152.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6164.32 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -30.7 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. * Witness Printer took 62.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 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: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i