./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f 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_sum01_bug02_base.case_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 1b149b3cef099476d14a8b122afb66552d0406eb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-0ed9222-m [2019-01-14 17:02:45,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 17:02:45,800 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 17:02:45,816 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 17:02:45,817 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 17:02:45,819 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 17:02:45,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 17:02:45,824 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 17:02:45,826 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 17:02:45,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 17:02:45,831 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 17:02:45,832 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 17:02:45,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 17:02:45,835 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 17:02:45,843 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 17:02:45,845 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 17:02:45,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 17:02:45,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 17:02:45,854 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 17:02:45,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 17:02:45,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 17:02:45,864 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 17:02:45,867 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 17:02:45,870 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 17:02:45,870 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 17:02:45,871 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 17:02:45,873 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 17:02:45,874 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 17:02:45,875 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 17:02:45,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 17:02:45,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 17:02:45,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 17:02:45,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 17:02:45,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 17:02:45,880 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 17:02:45,883 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 17:02:45,885 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 17:02:45,901 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 17:02:45,901 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 17:02:45,903 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 17:02:45,903 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 17:02:45,903 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 17:02:45,903 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 17:02:45,903 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 17:02:45,904 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 17:02:45,904 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 17:02:45,904 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 17:02:45,904 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 17:02:45,904 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 17:02:45,904 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 17:02:45,905 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 17:02:45,905 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 17:02:45,905 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 17:02:45,905 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 17:02:45,905 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 17:02:45,905 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 17:02:45,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 17:02:45,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:02:45,906 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 17:02:45,906 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 17:02:45,906 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 17:02:45,906 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 17:02:45,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 17:02:45,907 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 17:02:45,907 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 -> 1b149b3cef099476d14a8b122afb66552d0406eb [2019-01-14 17:02:45,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 17:02:45,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 17:02:45,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 17:02:45,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 17:02:45,980 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 17:02:45,980 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2019-01-14 17:02:46,034 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c5d9461/713827c1080c4205847ab9ac6dfc0dbd/FLAGebde2a6b1 [2019-01-14 17:02:46,419 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 17:02:46,419 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2019-01-14 17:02:46,426 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c5d9461/713827c1080c4205847ab9ac6dfc0dbd/FLAGebde2a6b1 [2019-01-14 17:02:46,807 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c5d9461/713827c1080c4205847ab9ac6dfc0dbd [2019-01-14 17:02:46,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 17:02:46,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 17:02:46,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 17:02:46,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 17:02:46,819 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 17:02:46,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:02:46" (1/1) ... [2019-01-14 17:02:46,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694eaae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:46, skipping insertion in model container [2019-01-14 17:02:46,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:02:46" (1/1) ... [2019-01-14 17:02:46,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 17:02:46,848 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 17:02:47,017 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:02:47,022 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 17:02:47,039 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:02:47,055 INFO L195 MainTranslator]: Completed translation [2019-01-14 17:02:47,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47 WrapperNode [2019-01-14 17:02:47,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 17:02:47,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 17:02:47,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 17:02:47,057 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 17:02:47,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 17:02:47,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 17:02:47,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 17:02:47,095 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 17:02:47,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... [2019-01-14 17:02:47,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 17:02:47,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 17:02:47,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 17:02:47,118 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 17:02:47,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:02:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 17:02:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 17:02:47,438 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 17:02:47,438 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-14 17:02:47,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:02:47 BoogieIcfgContainer [2019-01-14 17:02:47,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 17:02:47,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 17:02:47,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 17:02:47,444 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 17:02:47,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 05:02:46" (1/3) ... [2019-01-14 17:02:47,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247f505c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:02:47, skipping insertion in model container [2019-01-14 17:02:47,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:02:47" (2/3) ... [2019-01-14 17:02:47,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247f505c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:02:47, skipping insertion in model container [2019-01-14 17:02:47,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:02:47" (3/3) ... [2019-01-14 17:02:47,447 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2019-01-14 17:02:47,455 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 17:02:47,462 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 17:02:47,477 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 17:02:47,507 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 17:02:47,508 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 17:02:47,508 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 17:02:47,508 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 17:02:47,509 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 17:02:47,509 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 17:02:47,509 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 17:02:47,509 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 17:02:47,509 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 17:02:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-01-14 17:02:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 17:02:47,527 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:47,528 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 17:02:47,531 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-01-14 17:02:47,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:47,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:47,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:47,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:47,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:47,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:02:47,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 17:02:47,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 17:02:47,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 17:02:47,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 17:02:47,673 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-01-14 17:02:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:02:47,693 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-01-14 17:02:47,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 17:02:47,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-01-14 17:02:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:02:47,705 INFO L225 Difference]: With dead ends: 18 [2019-01-14 17:02:47,706 INFO L226 Difference]: Without dead ends: 8 [2019-01-14 17:02:47,710 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 [2019-01-14 17:02:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-14 17:02:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-14 17:02:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-14 17:02:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-01-14 17:02:47,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-01-14 17:02:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:02:47,744 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-01-14 17:02:47,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 17:02:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-01-14 17:02:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 17:02:47,744 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:47,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 17:02:47,745 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:47,745 INFO L82 PathProgramCache]: Analyzing trace with hash 29781167, now seen corresponding path program 1 times [2019-01-14 17:02:47,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:47,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:47,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:47,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:47,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:47,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:02:47,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 17:02:47,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 17:02:47,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 17:02:47,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:02:47,934 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-01-14 17:02:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:02:48,127 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-01-14 17:02:48,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 17:02:48,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-01-14 17:02:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:02:48,129 INFO L225 Difference]: With dead ends: 13 [2019-01-14 17:02:48,130 INFO L226 Difference]: Without dead ends: 9 [2019-01-14 17:02:48,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 17:02:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-14 17:02:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-01-14 17:02:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-01-14 17:02:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-01-14 17:02:48,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-01-14 17:02:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:02:48,136 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-01-14 17:02:48,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 17:02:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-01-14 17:02:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-14 17:02:48,137 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:48,137 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:02:48,138 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash -308490948, now seen corresponding path program 1 times [2019-01-14 17:02:48,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:48,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:48,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:48,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:48,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:48,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:02:48,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 17:02:48,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 17:02:48,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 17:02:48,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 17:02:48,181 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-01-14 17:02:48,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:02:48,231 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-01-14 17:02:48,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 17:02:48,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-01-14 17:02:48,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:02:48,233 INFO L225 Difference]: With dead ends: 18 [2019-01-14 17:02:48,233 INFO L226 Difference]: Without dead ends: 11 [2019-01-14 17:02:48,234 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 17:02:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-01-14 17:02:48,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-01-14 17:02:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-14 17:02:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-01-14 17:02:48,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2019-01-14 17:02:48,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:02:48,238 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-01-14 17:02:48,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 17:02:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-01-14 17:02:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-14 17:02:48,238 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:48,239 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:02:48,239 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:48,239 INFO L82 PathProgramCache]: Analyzing trace with hash -251232646, now seen corresponding path program 1 times [2019-01-14 17:02:48,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:48,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:48,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:48,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:48,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:48,686 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2019-01-14 17:02:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:48,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 17:02:48,702 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 [2019-01-14 17:02:48,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:48,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 17:02:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:49,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 17:02:49,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-01-14 17:02:49,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-01-14 17:02:49,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-01-14 17:02:49,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-01-14 17:02:49,255 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 11 states. [2019-01-14 17:02:49,423 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2019-01-14 17:02:49,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:02:49,698 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-01-14 17:02:49,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-01-14 17:02:49,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2019-01-14 17:02:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:02:49,702 INFO L225 Difference]: With dead ends: 21 [2019-01-14 17:02:49,702 INFO L226 Difference]: Without dead ends: 15 [2019-01-14 17:02:49,705 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-01-14 17:02:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-01-14 17:02:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-01-14 17:02:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-01-14 17:02:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-01-14 17:02:49,714 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2019-01-14 17:02:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:02:49,714 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-01-14 17:02:49,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-01-14 17:02:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-01-14 17:02:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 17:02:49,718 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:49,718 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:02:49,719 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:49,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:49,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1099734127, now seen corresponding path program 1 times [2019-01-14 17:02:49,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:49,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:49,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:49,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:49,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:49,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 17:02:49,800 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 [2019-01-14 17:02:49,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:49,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 17:02:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:49,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 17:02:49,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-01-14 17:02:49,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 17:02:49,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 17:02:49,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:02:49,878 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-01-14 17:02:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:02:50,067 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-01-14 17:02:50,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 17:02:50,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 17:02:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:02:50,069 INFO L225 Difference]: With dead ends: 22 [2019-01-14 17:02:50,069 INFO L226 Difference]: Without dead ends: 15 [2019-01-14 17:02:50,070 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:02:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-01-14 17:02:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-01-14 17:02:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-01-14 17:02:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-01-14 17:02:50,075 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-01-14 17:02:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:02:50,075 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-01-14 17:02:50,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 17:02:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-01-14 17:02:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 17:02:50,076 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:50,076 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-01-14 17:02:50,076 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:50,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2050208028, now seen corresponding path program 2 times [2019-01-14 17:02:50,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:50,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:50,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:50,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:02:50,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:50,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 17:02:50,149 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 [2019-01-14 17:02:50,164 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-14 17:02:50,184 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-14 17:02:50,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-14 17:02:50,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 17:02:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:50,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 17:02:50,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-01-14 17:02:50,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 17:02:50,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 17:02:50,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-14 17:02:50,215 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-01-14 17:02:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:02:50,260 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-01-14 17:02:50,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 17:02:50,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-01-14 17:02:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:02:50,263 INFO L225 Difference]: With dead ends: 24 [2019-01-14 17:02:50,263 INFO L226 Difference]: Without dead ends: 17 [2019-01-14 17:02:50,264 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-01-14 17:02:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-01-14 17:02:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-01-14 17:02:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-01-14 17:02:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-01-14 17:02:50,268 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-01-14 17:02:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:02:50,268 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-01-14 17:02:50,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 17:02:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-01-14 17:02:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 17:02:50,269 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:50,269 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2019-01-14 17:02:50,270 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:50,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:50,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2107466330, now seen corresponding path program 2 times [2019-01-14 17:02:50,270 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:50,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:50,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:50,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 17:02:50,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:02:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-01-14 17:02:50,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-14 17:02:50,569 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 [2019-01-14 17:02:50,585 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-14 17:02:50,594 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-14 17:02:50,594 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-01-14 17:02:50,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-14 17:02:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:02:50,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-14 17:02:50,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2019-01-14 17:02:50,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-01-14 17:02:50,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-01-14 17:02:50,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-01-14 17:02:50,874 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 16 states. [2019-01-14 17:02:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:02:51,465 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-01-14 17:02:51,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-01-14 17:02:51,466 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2019-01-14 17:02:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:02:51,467 INFO L225 Difference]: With dead ends: 27 [2019-01-14 17:02:51,468 INFO L226 Difference]: Without dead ends: 21 [2019-01-14 17:02:51,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2019-01-14 17:02:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-14 17:02:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-01-14 17:02:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-14 17:02:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-01-14 17:02:51,476 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2019-01-14 17:02:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:02:51,477 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-01-14 17:02:51,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-01-14 17:02:51,477 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-01-14 17:02:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 17:02:51,479 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:02:51,479 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2019-01-14 17:02:51,479 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:02:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:02:51,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1236497329, now seen corresponding path program 3 times [2019-01-14 17:02:51,480 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:02:51,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:02:51,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:51,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-14 17:02:51,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:02:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 17:02:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 17:02:51,525 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 17:02:51,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 05:02:51 BoogieIcfgContainer [2019-01-14 17:02:51,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 17:02:51,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 17:02:51,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 17:02:51,546 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 17:02:51,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:02:47" (3/4) ... [2019-01-14 17:02:51,551 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 17:02:51,597 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 17:02:51,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 17:02:51,598 INFO L168 Benchmark]: Toolchain (without parser) took 4787.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 954.0 MB in the beginning and 872.3 MB in the end (delta: 81.8 MB). Peak memory consumption was 194.5 MB. Max. memory is 11.5 GB. [2019-01-14 17:02:51,600 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:02:51,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.48 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 17:02:51,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.50 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:02:51,603 INFO L168 Benchmark]: Boogie Preprocessor took 23.37 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:02:51,603 INFO L168 Benchmark]: RCFGBuilder took 321.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-14 17:02:51,605 INFO L168 Benchmark]: TraceAbstraction took 4105.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 879.1 MB in the end (delta: 209.8 MB). Peak memory consumption was 209.8 MB. Max. memory is 11.5 GB. [2019-01-14 17:02:51,605 INFO L168 Benchmark]: Witness Printer took 51.65 ms. Allocated memory is still 1.1 GB. Free memory was 879.1 MB in the beginning and 872.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-14 17:02:51,611 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 242.48 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 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 37.50 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.37 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 321.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4105.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 879.1 MB in the end (delta: 209.8 MB). Peak memory consumption was 209.8 MB. Max. memory is 11.5 GB. * Witness Printer took 51.65 ms. Allocated memory is still 1.1 GB. Free memory was 879.1 MB in the beginning and 872.3 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: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] COND FALSE !(i<=n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. UNSAFE Result, 4.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 33 SDslu, 59 SDs, 0 SdLazy, 263 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 5635 SizeOfPredicates, 12 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 22/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...