./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c --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/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c -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 91fda61e05234dbe68b069d372f5d4b0bb73b229 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 14:58:23,983 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 14:58:23,985 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 14:58:23,997 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 14:58:23,997 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 14:58:23,998 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 14:58:24,000 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 14:58:24,002 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 14:58:24,005 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 14:58:24,006 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 14:58:24,007 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 14:58:24,007 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 14:58:24,009 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 14:58:24,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 14:58:24,012 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 14:58:24,013 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 14:58:24,014 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 14:58:24,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 14:58:24,019 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 14:58:24,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 14:58:24,023 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 14:58:24,024 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 14:58:24,027 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 14:58:24,027 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 14:58:24,028 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 14:58:24,029 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 14:58:24,030 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 14:58:24,031 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 14:58:24,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 14:58:24,033 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 14:58:24,034 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 14:58:24,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 14:58:24,035 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 14:58:24,035 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 14:58:24,037 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 14:58:24,038 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 14:58:24,038 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 14:58:24,054 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 14:58:24,055 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 14:58:24,056 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 14:58:24,056 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 14:58:24,057 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 14:58:24,057 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 14:58:24,057 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 14:58:24,057 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 14:58:24,057 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 14:58:24,058 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 14:58:24,058 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 14:58:24,058 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 14:58:24,058 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 14:58:24,058 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 14:58:24,059 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 14:58:24,060 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 14:58:24,060 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 14:58:24,061 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 14:58:24,061 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 14:58:24,061 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 14:58:24,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 14:58:24,061 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 14:58:24,062 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 14:58:24,063 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 14:58:24,063 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 14:58:24,063 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 14:58:24,063 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 14:58:24,063 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 -> 91fda61e05234dbe68b069d372f5d4b0bb73b229 [2019-01-14 14:58:24,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 14:58:24,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 14:58:24,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 14:58:24,117 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 14:58:24,118 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 14:58:24,118 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2019-01-14 14:58:24,175 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceaa35ac0/d80019301a704b89b41de02dd23e7001/FLAGea1916663 [2019-01-14 14:58:24,566 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 14:58:24,567 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2019-01-14 14:58:24,574 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceaa35ac0/d80019301a704b89b41de02dd23e7001/FLAGea1916663 [2019-01-14 14:58:24,960 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceaa35ac0/d80019301a704b89b41de02dd23e7001 [2019-01-14 14:58:24,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 14:58:24,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 14:58:24,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 14:58:24,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 14:58:24,971 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 14:58:24,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:58:24" (1/1) ... [2019-01-14 14:58:24,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc1f183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:24, skipping insertion in model container [2019-01-14 14:58:24,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:58:24" (1/1) ... [2019-01-14 14:58:24,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 14:58:25,009 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 14:58:25,217 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 14:58:25,222 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 14:58:25,245 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 14:58:25,267 INFO L195 MainTranslator]: Completed translation [2019-01-14 14:58:25,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25 WrapperNode [2019-01-14 14:58:25,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 14:58:25,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 14:58:25,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 14:58:25,270 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 14:58:25,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 14:58:25,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 14:58:25,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 14:58:25,315 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 14:58:25,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (1/1) ... [2019-01-14 14:58:25,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 14:58:25,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 14:58:25,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 14:58:25,356 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 14:58:25,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (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 14:58:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 14:58:25,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 14:58:25,897 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 14:58:25,898 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-14 14:58:25,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:58:25 BoogieIcfgContainer [2019-01-14 14:58:25,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 14:58:25,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 14:58:25,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 14:58:25,904 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 14:58:25,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 02:58:24" (1/3) ... [2019-01-14 14:58:25,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56af27b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 02:58:25, skipping insertion in model container [2019-01-14 14:58:25,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:58:25" (2/3) ... [2019-01-14 14:58:25,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56af27b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 02:58:25, skipping insertion in model container [2019-01-14 14:58:25,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:58:25" (3/3) ... [2019-01-14 14:58:25,907 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b_true-unreach-call_false-termination.cil.c [2019-01-14 14:58:25,917 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 14:58:25,924 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 14:58:25,939 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 14:58:25,970 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 14:58:25,971 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 14:58:25,971 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 14:58:25,972 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 14:58:25,972 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 14:58:25,972 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 14:58:25,972 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 14:58:25,972 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 14:58:25,972 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 14:58:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-14 14:58:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-01-14 14:58:25,995 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 14:58:25,996 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-01-14 14:58:25,998 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 14:58:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 14:58:26,004 INFO L82 PathProgramCache]: Analyzing trace with hash 963424, now seen corresponding path program 1 times [2019-01-14 14:58:26,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 14:58:26,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 14:58:26,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:26,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 14:58:26,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 14:58:26,165 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 14:58:26,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 14:58:26,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 14:58:26,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 14:58:26,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 14:58:26,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:26,184 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-14 14:58:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 14:58:26,300 INFO L93 Difference]: Finished difference Result 65 states and 110 transitions. [2019-01-14 14:58:26,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 14:58:26,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-01-14 14:58:26,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 14:58:26,314 INFO L225 Difference]: With dead ends: 65 [2019-01-14 14:58:26,314 INFO L226 Difference]: Without dead ends: 35 [2019-01-14 14:58:26,318 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 14:58:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-01-14 14:58:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-01-14 14:58:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-01-14 14:58:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2019-01-14 14:58:26,362 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 4 [2019-01-14 14:58:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 14:58:26,362 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2019-01-14 14:58:26,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 14:58:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2019-01-14 14:58:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-14 14:58:26,363 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 14:58:26,363 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 14:58:26,364 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 14:58:26,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 14:58:26,364 INFO L82 PathProgramCache]: Analyzing trace with hash -775387731, now seen corresponding path program 1 times [2019-01-14 14:58:26,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 14:58:26,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 14:58:26,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:26,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 14:58:26,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 14:58:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 14:58:26,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 14:58:26,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 14:58:26,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 14:58:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 14:58:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:26,443 INFO L87 Difference]: Start difference. First operand 35 states and 51 transitions. Second operand 3 states. [2019-01-14 14:58:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 14:58:26,709 INFO L93 Difference]: Finished difference Result 83 states and 121 transitions. [2019-01-14 14:58:26,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 14:58:26,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-14 14:58:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 14:58:26,713 INFO L225 Difference]: With dead ends: 83 [2019-01-14 14:58:26,713 INFO L226 Difference]: Without dead ends: 49 [2019-01-14 14:58:26,716 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-01-14 14:58:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-01-14 14:58:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-01-14 14:58:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2019-01-14 14:58:26,733 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 9 [2019-01-14 14:58:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 14:58:26,734 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2019-01-14 14:58:26,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 14:58:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2019-01-14 14:58:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-14 14:58:26,736 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 14:58:26,736 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 14:58:26,737 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 14:58:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 14:58:26,737 INFO L82 PathProgramCache]: Analyzing trace with hash -775328149, now seen corresponding path program 1 times [2019-01-14 14:58:26,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 14:58:26,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 14:58:26,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:26,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 14:58:26,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 14:58:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 14:58:26,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 14:58:26,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 14:58:26,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 14:58:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 14:58:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:26,797 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand 3 states. [2019-01-14 14:58:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 14:58:27,032 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2019-01-14 14:58:27,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 14:58:27,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-01-14 14:58:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 14:58:27,034 INFO L225 Difference]: With dead ends: 89 [2019-01-14 14:58:27,034 INFO L226 Difference]: Without dead ends: 66 [2019-01-14 14:58:27,035 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-01-14 14:58:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-01-14 14:58:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-01-14 14:58:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2019-01-14 14:58:27,046 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 9 [2019-01-14 14:58:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 14:58:27,046 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2019-01-14 14:58:27,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 14:58:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2019-01-14 14:58:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-14 14:58:27,047 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 14:58:27,047 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 14:58:27,048 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 14:58:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 14:58:27,048 INFO L82 PathProgramCache]: Analyzing trace with hash -966830088, now seen corresponding path program 1 times [2019-01-14 14:58:27,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 14:58:27,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 14:58:27,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:27,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 14:58:27,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 14:58:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-01-14 14:58:27,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 14:58:27,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 14:58:27,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 14:58:27,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 14:58:27,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:27,113 INFO L87 Difference]: Start difference. First operand 66 states and 89 transitions. Second operand 3 states. [2019-01-14 14:58:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 14:58:27,263 INFO L93 Difference]: Finished difference Result 133 states and 183 transitions. [2019-01-14 14:58:27,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 14:58:27,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-01-14 14:58:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 14:58:27,265 INFO L225 Difference]: With dead ends: 133 [2019-01-14 14:58:27,265 INFO L226 Difference]: Without dead ends: 89 [2019-01-14 14:58:27,266 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-01-14 14:58:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2019-01-14 14:58:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-01-14 14:58:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2019-01-14 14:58:27,280 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 16 [2019-01-14 14:58:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 14:58:27,281 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2019-01-14 14:58:27,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 14:58:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2019-01-14 14:58:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-14 14:58:27,282 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 14:58:27,282 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 14:58:27,282 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 14:58:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 14:58:27,283 INFO L82 PathProgramCache]: Analyzing trace with hash -782905388, now seen corresponding path program 1 times [2019-01-14 14:58:27,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 14:58:27,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 14:58:27,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:27,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 14:58:27,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 14:58:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-01-14 14:58:27,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 14:58:27,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 14:58:27,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 14:58:27,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 14:58:27,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:27,329 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 3 states. [2019-01-14 14:58:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 14:58:27,412 INFO L93 Difference]: Finished difference Result 177 states and 241 transitions. [2019-01-14 14:58:27,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 14:58:27,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-01-14 14:58:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 14:58:27,414 INFO L225 Difference]: With dead ends: 177 [2019-01-14 14:58:27,414 INFO L226 Difference]: Without dead ends: 72 [2019-01-14 14:58:27,415 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:27,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-01-14 14:58:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2019-01-14 14:58:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-01-14 14:58:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2019-01-14 14:58:27,435 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 19 [2019-01-14 14:58:27,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 14:58:27,435 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2019-01-14 14:58:27,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 14:58:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2019-01-14 14:58:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-01-14 14:58:27,437 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 14:58:27,439 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 14:58:27,439 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 14:58:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 14:58:27,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1830460977, now seen corresponding path program 1 times [2019-01-14 14:58:27,440 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 14:58:27,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 14:58:27,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:27,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 14:58:27,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 14:58:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 14:58:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-01-14 14:58:27,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 14:58:27,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-01-14 14:58:27,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-14 14:58:27,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-14 14:58:27,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:27,504 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand 3 states. [2019-01-14 14:58:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 14:58:27,525 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2019-01-14 14:58:27,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-14 14:58:27,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-01-14 14:58:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 14:58:27,527 INFO L225 Difference]: With dead ends: 120 [2019-01-14 14:58:27,527 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 14:58:27,527 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-14 14:58:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 14:58:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 14:58:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 14:58:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 14:58:27,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-01-14 14:58:27,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 14:58:27,531 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 14:58:27,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-14 14:58:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 14:58:27,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 14:58:27,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 14:58:27,761 WARN L181 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2019-01-14 14:58:27,852 INFO L444 ceAbstractionStarter]: At program point L97(lines 9 141) the Hoare annotation is: false [2019-01-14 14:58:27,853 INFO L444 ceAbstractionStarter]: At program point L31(lines 30 125) the Hoare annotation is: (<= ULTIMATE.start_main_~blastFlag~0 2) [2019-01-14 14:58:27,853 INFO L448 ceAbstractionStarter]: For program point L93-1(lines 54 107) no Hoare annotation was computed. [2019-01-14 14:58:27,853 INFO L448 ceAbstractionStarter]: For program point L89-1(lines 54 107) no Hoare annotation was computed. [2019-01-14 14:58:27,853 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-01-14 14:58:27,853 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 14:58:27,853 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 14:58:27,853 INFO L448 ceAbstractionStarter]: For program point L78-1(lines 54 107) no Hoare annotation was computed. [2019-01-14 14:58:27,854 INFO L451 ceAbstractionStarter]: At program point L140(lines 9 141) the Hoare annotation is: true [2019-01-14 14:58:27,854 INFO L448 ceAbstractionStarter]: For program point L70(lines 70 74) no Hoare annotation was computed. [2019-01-14 14:58:27,854 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 14:58:27,854 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 128) no Hoare annotation was computed. [2019-01-14 14:58:27,854 INFO L448 ceAbstractionStarter]: For program point L58-1(lines 54 107) no Hoare annotation was computed. [2019-01-14 14:58:27,854 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2019-01-14 14:58:27,854 INFO L448 ceAbstractionStarter]: For program point L50(lines 50 109) no Hoare annotation was computed. [2019-01-14 14:58:27,855 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 111) no Hoare annotation was computed. [2019-01-14 14:58:27,855 INFO L451 ceAbstractionStarter]: At program point L137(lines 9 141) the Hoare annotation is: true [2019-01-14 14:58:27,855 INFO L444 ceAbstractionStarter]: At program point L100(lines 18 135) the Hoare annotation is: (or (<= ULTIMATE.start_main_~blastFlag~0 2) (and (<= ULTIMATE.start_main_~blastFlag~0 3) (<= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-01-14 14:58:27,855 INFO L448 ceAbstractionStarter]: For program point L96(lines 96 98) no Hoare annotation was computed. [2019-01-14 14:58:27,855 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 125) no Hoare annotation was computed. [2019-01-14 14:58:27,855 INFO L444 ceAbstractionStarter]: At program point L26(lines 25 128) the Hoare annotation is: (<= ULTIMATE.start_main_~blastFlag~0 2) [2019-01-14 14:58:27,856 INFO L444 ceAbstractionStarter]: At program point L51(lines 50 109) the Hoare annotation is: (let ((.cse0 (<= 8656 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (<= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (<= ULTIMATE.start_main_~blastFlag~0 3) (not (= ULTIMATE.start_main_~s__hit~0 0))))) [2019-01-14 14:58:27,856 INFO L444 ceAbstractionStarter]: At program point L47(lines 46 111) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and (<= ULTIMATE.start_main_~blastFlag~0 2) .cse0) (and (<= ULTIMATE.start_main_~blastFlag~0 3) .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0))))) [2019-01-14 14:58:27,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 02:58:27 BoogieIcfgContainer [2019-01-14 14:58:27,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 14:58:27,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 14:58:27,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 14:58:27,871 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 14:58:27,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:58:25" (3/4) ... [2019-01-14 14:58:27,875 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 14:58:27,887 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-14 14:58:27,887 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-01-14 14:58:27,945 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 14:58:27,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 14:58:27,946 INFO L168 Benchmark]: Toolchain (without parser) took 2981.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -54.4 MB). Peak memory consumption was 65.2 MB. Max. memory is 11.5 GB. [2019-01-14 14:58:27,947 INFO L168 Benchmark]: CDTParser took 0.15 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 14:58:27,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 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. [2019-01-14 14:58:27,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.79 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. [2019-01-14 14:58:27,949 INFO L168 Benchmark]: Boogie Preprocessor took 40.00 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-14 14:58:27,949 INFO L168 Benchmark]: RCFGBuilder took 544.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-01-14 14:58:27,950 INFO L168 Benchmark]: TraceAbstraction took 1969.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 11.5 GB. [2019-01-14 14:58:27,951 INFO L168 Benchmark]: Witness Printer took 74.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-14 14:58:27,956 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 301.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 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 44.79 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 40.00 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 544.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1969.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 11.5 GB. * Witness Printer took 74.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB 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: - PositiveResult [Line: 139]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (8656 <= s__state && blastFlag <= 2) || ((8656 <= s__state && blastFlag <= 3) && !(s__hit == 0)) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: blastFlag <= 2 || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 159 SDtfs, 93 SDslu, 84 SDs, 0 SdLazy, 95 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 62 HoareAnnotationTreeSize, 8 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 3566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...