./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e441b408705ca8366624dd497de58641bec51a6 .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:27:26,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:26,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:26,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:26,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:26,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:26,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:26,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:26,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:26,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:26,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:26,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:26,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:26,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:26,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:26,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:26,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:26,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:26,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:26,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:26,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:26,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:26,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:26,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:26,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:26,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:26,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:26,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:26,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:26,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:26,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:26,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:26,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:26,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:26,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:26,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:26,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:26,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:26,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:26,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:26,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:26,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:27:26,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:26,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:26,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:26,440 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:26,440 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:26,440 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:26,441 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:27:26,441 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:26,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:26,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:27:26,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:27:26,441 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:26,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:27:26,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:27:26,442 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:27:26,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:26,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:26,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:27:26,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:26,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:26,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:26,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:26,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:26,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:26,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:26,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:26,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:26,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:26,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:26,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:26,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:26,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:26,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:26,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:26,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:26,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:27:26,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:27:26,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:26,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:26,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:26,448 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e441b408705ca8366624dd497de58641bec51a6 [2020-11-28 07:27:26,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:26,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:26,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:26,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:26,728 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:26,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/../../sv-benchmarks/c/loops/sum01-2.i [2020-11-28 07:27:26,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/data/818554cf2/c91371bd15484328a40eaf1b746e5916/FLAGd4329f980 [2020-11-28 07:27:27,259 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:27,260 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/sv-benchmarks/c/loops/sum01-2.i [2020-11-28 07:27:27,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/data/818554cf2/c91371bd15484328a40eaf1b746e5916/FLAGd4329f980 [2020-11-28 07:27:27,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/data/818554cf2/c91371bd15484328a40eaf1b746e5916 [2020-11-28 07:27:27,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:27,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:27,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:27,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:27,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:27,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eff8365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27, skipping insertion in model container [2020-11-28 07:27:27,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:27,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:27,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:27,914 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:27,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:27,947 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:27,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27 WrapperNode [2020-11-28 07:27:27,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:27,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:27,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:27,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:27,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:27,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:27,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:27,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:27,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... [2020-11-28 07:27:27,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:28,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:28,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:28,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:28,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/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 [2020-11-28 07:27:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:27:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:28,476 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:28,476 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:27:28,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:28 BoogieIcfgContainer [2020-11-28 07:27:28,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:28,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:28,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:28,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:28,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:27" (1/3) ... [2020-11-28 07:27:28,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5427a084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:28, skipping insertion in model container [2020-11-28 07:27:28,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:27" (2/3) ... [2020-11-28 07:27:28,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5427a084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:28, skipping insertion in model container [2020-11-28 07:27:28,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:28" (3/3) ... [2020-11-28 07:27:28,488 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-11-28 07:27:28,499 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:28,504 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:27:28,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:27:28,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:28,540 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:28,540 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:28,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:28,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:28,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:28,541 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:28,541 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:27:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:27:28,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:28,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:27:28,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2126495066, now seen corresponding path program 1 times [2020-11-28 07:27:28,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:28,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255953292] [2020-11-28 07:27:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:28,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255953292] [2020-11-28 07:27:28,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:28,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:27:28,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667304616] [2020-11-28 07:27:28,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:27:28,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:28,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:27:28,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:27:28,764 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-11-28 07:27:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:28,840 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-28 07:27:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:27:28,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:27:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:28,848 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:27:28,849 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 07:27:28,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 07:27:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 07:27:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 07:27:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 07:27:28,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 07:27:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:28,882 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 07:27:28,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:27:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 07:27:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:27:28,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:28,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:28,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:27:28,884 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:28,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1494198701, now seen corresponding path program 1 times [2020-11-28 07:27:28,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:28,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823974053] [2020-11-28 07:27:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:29,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823974053] [2020-11-28 07:27:29,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336656264] [2020-11-28 07:27:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:27:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:29,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 07:27:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:29,328 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:27:29,335 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 07:27:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:29,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:29,381 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:27:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:29,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [738256521] [2020-11-28 07:27:29,546 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:27:29,546 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:27:29,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:27:29,556 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:27:29,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:27:30,042 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:27:30,192 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-28 07:27:30,343 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-11-28 07:27:30,621 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-11-28 07:27:30,624 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:27:30,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:27:30,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2020-11-28 07:27:30,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750888212] [2020-11-28 07:27:30,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 07:27:30,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 07:27:30,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:27:30,628 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 11 states. [2020-11-28 07:27:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:30,864 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-28 07:27:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:27:30,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 7 [2020-11-28 07:27:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:30,866 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:27:30,866 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:27:30,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-11-28 07:27:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:27:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:27:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:27:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 07:27:30,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-11-28 07:27:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:30,871 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 07:27:30,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 07:27:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 07:27:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:27:30,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:30,872 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:31,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:27:31,073 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:31,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1987986918, now seen corresponding path program 2 times [2020-11-28 07:27:31,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:31,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609939419] [2020-11-28 07:27:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:27:31,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609939419] [2020-11-28 07:27:31,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083980656] [2020-11-28 07:27:31,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:27:31,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 07:27:31,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 07:27:31,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-28 07:27:31,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:31,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:31,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [203789579] [2020-11-28 07:27:31,797 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:27:31,797 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:27:31,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:27:31,798 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:27:31,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:27:32,006 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:27:32,173 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-28 07:27:32,309 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-11-28 07:27:32,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:27:32,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:27:32,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2020-11-28 07:27:32,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732923624] [2020-11-28 07:27:32,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 07:27:32,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:32,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 07:27:32,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-11-28 07:27:32,550 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 18 states. [2020-11-28 07:27:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:32,841 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-28 07:27:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 07:27:32,841 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 10 [2020-11-28 07:27:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:32,842 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:27:32,842 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:27:32,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2020-11-28 07:27:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:27:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:27:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:27:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:27:32,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 07:27:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:32,844 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:27:32,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 07:27:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:27:32,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:27:33,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 07:27:33,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:27:33,127 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:27:33,128 INFO L270 CegarLoopResult]: At program point L25-3(lines 25 27) the Hoare annotation is: (or (let ((.cse1 (+ ULTIMATE.start_main_~sn~0 2)) (.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< ULTIMATE.start_main_~sn~0 (+ (* 2 ULTIMATE.start_main_~n~0) 1)))) (and (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~sn~0 0))) [2020-11-28 07:27:33,128 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:27:33,128 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-28 07:27:33,128 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:27:33,128 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-11-28 07:27:33,128 INFO L270 CegarLoopResult]: At program point L16-2(lines 1 29) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~sn~0 0)) [2020-11-28 07:27:33,129 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 07:27:33,129 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 07:27:33,129 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 07:27:33,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:27:33 BoogieIcfgContainer [2020-11-28 07:27:33,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:27:33,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:27:33,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:27:33,148 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:27:33,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:28" (3/4) ... [2020-11-28 07:27:33,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:27:33,169 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:27:33,170 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:27:33,170 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:27:33,170 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:27:33,215 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8fb8528e-540f-4301-8d9c-bfefdb622c67/bin/utaipan/witness.graphml [2020-11-28 07:27:33,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:27:33,216 INFO L168 Benchmark]: Toolchain (without parser) took 5550.27 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 103.1 MB in the beginning and 110.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:33,217 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:33,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.43 ms. Allocated memory is still 127.9 MB. Free memory was 103.1 MB in the beginning and 106.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:33,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.10 ms. Allocated memory is still 127.9 MB. Free memory was 106.2 MB in the beginning and 104.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:33,226 INFO L168 Benchmark]: Boogie Preprocessor took 19.10 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 103.8 MB in the end (delta: 899.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:33,226 INFO L168 Benchmark]: RCFGBuilder took 477.75 ms. Allocated memory is still 127.9 MB. Free memory was 103.8 MB in the beginning and 90.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:33,228 INFO L168 Benchmark]: TraceAbstraction took 4667.16 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 89.5 MB in the beginning and 113.6 MB in the end (delta: -24.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:33,228 INFO L168 Benchmark]: Witness Printer took 67.41 ms. Allocated memory is still 155.2 MB. Free memory was 112.6 MB in the beginning and 110.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:33,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.43 ms. Allocated memory is still 127.9 MB. Free memory was 103.1 MB in the beginning and 106.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.10 ms. Allocated memory is still 127.9 MB. Free memory was 106.2 MB in the beginning and 104.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.10 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 103.8 MB in the end (delta: 899.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 477.75 ms. Allocated memory is still 127.9 MB. Free memory was 103.8 MB in the beginning and 90.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4667.16 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 89.5 MB in the beginning and 113.6 MB in the end (delta: -24.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 67.41 ms. Allocated memory is still 155.2 MB. Free memory was 112.6 MB in the beginning and 110.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 25]: Loop Invariant Derived loop invariant: ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) || (i == 1 && sn == 0) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: !(0 == cond) || sn == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 30 SDslu, 36 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 38 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 122 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 3156 SizeOfPredicates, 12 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...