./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/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 7f63971ff7e1e47adf4fc8a9c16196a6401c3822 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:53:58,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:53:58,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:53:58,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:53:58,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:53:58,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:53:58,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:53:58,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:53:58,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:53:58,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:53:58,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:53:58,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:53:58,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:53:58,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:53:58,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:53:58,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:53:58,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:53:58,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:53:58,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:53:58,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:53:58,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:53:58,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:53:58,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:53:58,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:53:58,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:53:58,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:53:58,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:53:58,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:53:58,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:53:58,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:53:58,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:53:58,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:53:58,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:53:58,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:53:58,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:53:58,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:53:58,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:53:58,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:53:58,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:53:58,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:53:58,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:53:58,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:53:58,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:53:58,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:53:58,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:53:58,331 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:53:58,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:53:58,331 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:53:58,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:53:58,331 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:53:58,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:53:58,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:53:58,331 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:53:58,332 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:53:58,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:53:58,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:53:58,332 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:53:58,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:53:58,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:53:58,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:53:58,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:53:58,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:53:58,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:53:58,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:53:58,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:53:58,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:53:58,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:53:58,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:53:58,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:53:58,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:53:58,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:53:58,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:53:58,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:53:58,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:53:58,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:53:58,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:53:58,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:53:58,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:53:58,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:53:58,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:53:58,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:53:58,336 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_bea539c8-5021-4e82-b5a3-88aef8c7efed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f63971ff7e1e47adf4fc8a9c16196a6401c3822 [2020-12-09 09:53:58,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:53:58,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:53:58,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:53:58,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:53:58,518 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:53:58,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/../../sv-benchmarks/c/loop-new/nested-1.i [2020-12-09 09:53:58,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/data/9534d370e/eb77b65d04054632b93c08199bd24068/FLAG401eeb5c2 [2020-12-09 09:53:58,914 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:53:58,914 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/sv-benchmarks/c/loop-new/nested-1.i [2020-12-09 09:53:58,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/data/9534d370e/eb77b65d04054632b93c08199bd24068/FLAG401eeb5c2 [2020-12-09 09:53:58,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/data/9534d370e/eb77b65d04054632b93c08199bd24068 [2020-12-09 09:53:58,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:53:58,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:53:58,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:53:58,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:53:58,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:53:58,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:53:58" (1/1) ... [2020-12-09 09:53:58,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2069c8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:58, skipping insertion in model container [2020-12-09 09:53:58,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:53:58" (1/1) ... [2020-12-09 09:53:58,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:53:58,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:53:59,050 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2020-12-09 09:53:59,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:53:59,064 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:53:59,072 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2020-12-09 09:53:59,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:53:59,085 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:53:59,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59 WrapperNode [2020-12-09 09:53:59,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:53:59,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:53:59,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:53:59,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:53:59,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:53:59,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:53:59,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:53:59,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:53:59,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... [2020-12-09 09:53:59,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:53:59,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:53:59,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:53:59,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:53:59,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/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 [2020-12-09 09:53:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:53:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:53:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:53:59,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:53:59,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:53:59,337 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 09:53:59,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:53:59 BoogieIcfgContainer [2020-12-09 09:53:59,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:53:59,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:53:59,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:53:59,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:53:59,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:53:58" (1/3) ... [2020-12-09 09:53:59,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c42b841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:53:59, skipping insertion in model container [2020-12-09 09:53:59,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:53:59" (2/3) ... [2020-12-09 09:53:59,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c42b841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:53:59, skipping insertion in model container [2020-12-09 09:53:59,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:53:59" (3/3) ... [2020-12-09 09:53:59,344 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-1.i [2020-12-09 09:53:59,354 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:53:59,357 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:53:59,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:53:59,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:53:59,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:53:59,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:53:59,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:53:59,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:53:59,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:53:59,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:53:59,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:53:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 09:53:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 09:53:59,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:53:59,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 09:53:59,400 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:53:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:53:59,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1883240382, now seen corresponding path program 1 times [2020-12-09 09:53:59,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:53:59,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531008399] [2020-12-09 09:53:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:53:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:53:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:53:59,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531008399] [2020-12-09 09:53:59,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:53:59,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:53:59,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874661813] [2020-12-09 09:53:59,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:53:59,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:53:59,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:53:59,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:53:59,551 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-09 09:53:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:53:59,581 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-12-09 09:53:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:53:59,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 09:53:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:53:59,588 INFO L225 Difference]: With dead ends: 21 [2020-12-09 09:53:59,588 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 09:53:59,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:53:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 09:53:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-12-09 09:53:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 09:53:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-09 09:53:59,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2020-12-09 09:53:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:53:59,613 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-09 09:53:59,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:53:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-09 09:53:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:53:59,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:53:59,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:53:59,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:53:59,615 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:53:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:53:59,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1646394757, now seen corresponding path program 1 times [2020-12-09 09:53:59,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:53:59,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280837274] [2020-12-09 09:53:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:53:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:53:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:53:59,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280837274] [2020-12-09 09:53:59,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:53:59,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:53:59,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529032726] [2020-12-09 09:53:59,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:53:59,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:53:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:53:59,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:53:59,659 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2020-12-09 09:53:59,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:53:59,671 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-12-09 09:53:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:53:59,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 09:53:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:53:59,672 INFO L225 Difference]: With dead ends: 15 [2020-12-09 09:53:59,672 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 09:53:59,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:53:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 09:53:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 09:53:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 09:53:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-09 09:53:59,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2020-12-09 09:53:59,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:53:59,676 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-09 09:53:59,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:53:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-09 09:53:59,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:53:59,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:53:59,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:53:59,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:53:59,677 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:53:59,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:53:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash 497750940, now seen corresponding path program 1 times [2020-12-09 09:53:59,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:53:59,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936562119] [2020-12-09 09:53:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:53:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:53:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:53:59,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936562119] [2020-12-09 09:53:59,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776713114] [2020-12-09 09:53:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/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 [2020-12-09 09:53:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:53:59,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:53:59,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:53:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:53:59,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:53:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:53:59,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115894618] [2020-12-09 09:53:59,851 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 09:53:59,852 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:53:59,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:53:59,859 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:53:59,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:54:00,274 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:54:00,754 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-12-09 09:54:00,973 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 40 [2020-12-09 09:54:00,974 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:54:00,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:54:00,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2020-12-09 09:54:00,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531509677] [2020-12-09 09:54:00,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 09:54:00,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:00,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 09:54:00,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-09 09:54:00,977 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 10 states. [2020-12-09 09:54:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:01,024 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2020-12-09 09:54:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:54:01,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-12-09 09:54:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:01,025 INFO L225 Difference]: With dead ends: 19 [2020-12-09 09:54:01,025 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 09:54:01,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-12-09 09:54:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 09:54:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 09:54:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 09:54:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-12-09 09:54:01,028 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2020-12-09 09:54:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:01,028 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-12-09 09:54:01,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 09:54:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-09 09:54:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:54:01,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:01,029 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:54:01,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 09:54:01,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:01,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1322663237, now seen corresponding path program 2 times [2020-12-09 09:54:01,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:01,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146012916] [2020-12-09 09:54:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:01,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146012916] [2020-12-09 09:54:01,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602006076] [2020-12-09 09:54:01,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/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 [2020-12-09 09:54:01,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 09:54:01,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:54:01,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:54:01,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:54:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 09:54:01,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:54:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 09:54:01,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [999968453] [2020-12-09 09:54:01,481 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 09:54:01,482 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:54:01,482 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:54:01,482 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:54:01,482 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:54:01,742 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:54:01,901 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 41 [2020-12-09 09:54:02,247 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-12-09 09:54:02,453 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:54:02,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:54:02,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2020-12-09 09:54:02,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435437369] [2020-12-09 09:54:02,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 09:54:02,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:02,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 09:54:02,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-12-09 09:54:02,455 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 14 states. [2020-12-09 09:54:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:02,858 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2020-12-09 09:54:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-09 09:54:02,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-12-09 09:54:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:02,859 INFO L225 Difference]: With dead ends: 44 [2020-12-09 09:54:02,859 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 09:54:02,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=538, Invalid=1442, Unknown=0, NotChecked=0, Total=1980 [2020-12-09 09:54:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 09:54:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-09 09:54:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 09:54:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-09 09:54:02,865 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2020-12-09 09:54:02,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:02,865 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-09 09:54:02,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 09:54:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-09 09:54:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 09:54:02,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:02,867 INFO L422 BasicCegarLoop]: trace histogram [20, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-09 09:54:03,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:54:03,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:03,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1086483006, now seen corresponding path program 3 times [2020-12-09 09:54:03,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:03,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409781879] [2020-12-09 09:54:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-12-09 09:54:03,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409781879] [2020-12-09 09:54:03,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010944614] [2020-12-09 09:54:03,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:54:03,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 09:54:03,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:54:03,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 09:54:03,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:54:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-12-09 09:54:03,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:54:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-12-09 09:54:03,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1413229278] [2020-12-09 09:54:03,339 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 09:54:03,339 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:54:03,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:54:03,339 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:54:03,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:54:03,538 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:54:03,962 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-12-09 09:54:04,149 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:54:04,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:54:04,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2020-12-09 09:54:04,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572469569] [2020-12-09 09:54:04,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 09:54:04,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:04,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 09:54:04,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2020-12-09 09:54:04,151 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 20 states. [2020-12-09 09:54:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:04,221 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2020-12-09 09:54:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 09:54:04,221 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 34 [2020-12-09 09:54:04,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:04,222 INFO L225 Difference]: With dead ends: 80 [2020-12-09 09:54:04,222 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 09:54:04,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-12-09 09:54:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 09:54:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 09:54:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 09:54:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-09 09:54:04,229 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 34 [2020-12-09 09:54:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:04,229 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-09 09:54:04,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 09:54:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-09 09:54:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-09 09:54:04,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:04,231 INFO L422 BasicCegarLoop]: trace histogram [40, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-09 09:54:04,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-12-09 09:54:04,432 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:04,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:04,433 INFO L82 PathProgramCache]: Analyzing trace with hash 217289382, now seen corresponding path program 4 times [2020-12-09 09:54:04,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:04,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388892566] [2020-12-09 09:54:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-09 09:54:04,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388892566] [2020-12-09 09:54:04,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636130047] [2020-12-09 09:54:04,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:54:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:04,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 09:54:04,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:54:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-09 09:54:04,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:54:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-09 09:54:04,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [984568142] [2020-12-09 09:54:04,757 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 09:54:04,758 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:54:04,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:54:04,758 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:54:04,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:54:04,908 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:54:05,314 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-12-09 09:54:05,502 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:54:05,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:54:05,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2020-12-09 09:54:05,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350445780] [2020-12-09 09:54:05,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-09 09:54:05,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:05,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-09 09:54:05,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2020-12-09 09:54:05,504 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-12-09 09:54:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:05,608 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2020-12-09 09:54:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 09:54:05,609 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-12-09 09:54:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:05,610 INFO L225 Difference]: With dead ends: 130 [2020-12-09 09:54:05,610 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 09:54:05,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=620, Unknown=0, NotChecked=0, Total=870 [2020-12-09 09:54:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 09:54:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-12-09 09:54:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-09 09:54:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2020-12-09 09:54:05,623 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 54 [2020-12-09 09:54:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:05,623 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2020-12-09 09:54:05,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-09 09:54:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2020-12-09 09:54:05,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-09 09:54:05,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:05,627 INFO L422 BasicCegarLoop]: trace histogram [100, 10, 10, 1, 1, 1, 1, 1, 1] [2020-12-09 09:54:05,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:54:05,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:05,830 INFO L82 PathProgramCache]: Analyzing trace with hash 485862716, now seen corresponding path program 5 times [2020-12-09 09:54:05,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:05,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767464947] [2020-12-09 09:54:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 5922 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 09:54:09,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767464947] [2020-12-09 09:54:09,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710837996] [2020-12-09 09:54:09,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:54:09,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2020-12-09 09:54:09,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 09:54:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 109 conjunts are in the unsatisfiable core [2020-12-09 09:54:09,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:54:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 6041 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 09:54:09,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:54:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 6041 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 09:54:09,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:54:09,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103, 103] imperfect sequences [103] total 105 [2020-12-09 09:54:09,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693913210] [2020-12-09 09:54:09,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-12-09 09:54:09,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:09,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-12-09 09:54:09,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2020-12-09 09:54:09,676 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand 105 states. [2020-12-09 09:54:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:10,475 INFO L93 Difference]: Finished difference Result 5122 states and 5582 transitions. [2020-12-09 09:54:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-12-09 09:54:10,475 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 126 [2020-12-09 09:54:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:10,476 INFO L225 Difference]: With dead ends: 5122 [2020-12-09 09:54:10,476 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:54:10,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5366, Invalid=5976, Unknown=0, NotChecked=0, Total=11342 [2020-12-09 09:54:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:54:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:54:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:54:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:54:10,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2020-12-09 09:54:10,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:10,487 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:54:10,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-12-09 09:54:10,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:54:10,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:54:10,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:54:10,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:54:11,714 WARN L197 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 671 DAG size of output: 632 [2020-12-09 09:54:43,783 WARN L197 SmtUtils]: Spent 32.06 s on a formula simplification. DAG size of input: 4903 DAG size of output: 1178 [2020-12-09 09:54:48,573 WARN L197 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 632 DAG size of output: 58 [2020-12-09 09:55:13,302 WARN L197 SmtUtils]: Spent 24.72 s on a formula simplification. DAG size of input: 1178 DAG size of output: 347 [2020-12-09 09:55:13,305 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:55:13,305 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-09 09:55:13,306 INFO L258 CegarLoopResult]: At program point L31-3(lines 31 35) the Hoare annotation is: (let ((.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 (< (+ ULTIMATE.start_main_~i~0 3) ULTIMATE.start_main_~n~0) .cse1 (<= 60 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 3) (<= 30 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (< (+ ULTIMATE.start_main_~i~0 4) ULTIMATE.start_main_~n~0) (<= 50 ULTIMATE.start_main_~k~0)) (and (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) .cse0 (<= 80 ULTIMATE.start_main_~k~0) .cse1) (and .cse0 (<= 40 ULTIMATE.start_main_~k~0) .cse1 (<= ULTIMATE.start_main_~i~0 4)) (and .cse0 .cse1 (<= 70 ULTIMATE.start_main_~k~0) (< (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~n~0)) (and .cse0 (= ULTIMATE.start_main_~i~0 0) .cse1 (<= 0 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 90 ULTIMATE.start_main_~k~0) .cse1 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (and .cse0 .cse1 (<= 20 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 2)) (and .cse0 (<= 10 ULTIMATE.start_main_~k~0) .cse1 (<= ULTIMATE.start_main_~i~0 1)))) [2020-12-09 09:55:13,306 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-09 09:55:13,306 INFO L262 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-12-09 09:55:13,306 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:55:13,307 INFO L258 CegarLoopResult]: At program point L32-3(lines 32 34) the Hoare annotation is: (let ((.cse24 (<= 30 ULTIMATE.start_main_~k~0)) (.cse27 (<= 80 ULTIMATE.start_main_~k~0)) (.cse12 (<= 40 ULTIMATE.start_main_~k~0)) (.cse28 (<= 90 ULTIMATE.start_main_~k~0)) (.cse25 (<= 10 ULTIMATE.start_main_~k~0)) (.cse17 (< (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0)) (.cse6 (= ULTIMATE.start_main_~i~0 0)) (.cse4 (<= ULTIMATE.start_main_~i~0 4)) (.cse29 (<= 20 ULTIMATE.start_main_~k~0)) (.cse19 (<= ULTIMATE.start_main_~j~0 4)) (.cse3 (< (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~n~0)) (.cse13 (<= ULTIMATE.start_main_~i~0 2)) (.cse10 (<= ULTIMATE.start_main_~j~0 3)) (.cse23 (<= 70 ULTIMATE.start_main_~k~0)) (.cse5 (<= ULTIMATE.start_main_~j~0 2)) (.cse18 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (.cse9 (<= 50 ULTIMATE.start_main_~k~0)) (.cse22 (= ULTIMATE.start_main_~j~0 0)) (.cse0 (< (+ ULTIMATE.start_main_~j~0 2) ULTIMATE.start_main_~m~0)) (.cse21 (<= ULTIMATE.start_main_~j~0 1)) (.cse7 (<= ULTIMATE.start_main_~i~0 1)) (.cse20 (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0)) (.cse15 (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~m~0)) (.cse8 (< (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~m~0)) (.cse14 (< (+ ULTIMATE.start_main_~i~0 4) ULTIMATE.start_main_~n~0)) (.cse30 (<= 60 ULTIMATE.start_main_~k~0)) (.cse11 (<= ULTIMATE.start_main_~i~0 3)) (.cse1 (<= 10 ULTIMATE.start_main_~m~0)) (.cse16 (< (+ ULTIMATE.start_main_~i~0 3) ULTIMATE.start_main_~n~0)) (.cse2 (<= 10 ULTIMATE.start_main_~n~0)) (.cse26 (<= ULTIMATE.start_main_~j~0 5))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 77 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse2 (<= 47 ULTIMATE.start_main_~k~0) .cse4) (and .cse1 .cse5 (<= 42 ULTIMATE.start_main_~k~0) .cse2 .cse4) (and (<= 2 ULTIMATE.start_main_~k~0) .cse1 .cse5 .cse6 .cse2) (and .cse1 .cse5 (<= 12 ULTIMATE.start_main_~k~0) .cse2 .cse7) (and .cse1 (<= 16 ULTIMATE.start_main_~k~0) .cse2 .cse7 .cse8) (and .cse1 .cse2 .cse9 .cse4) (and .cse1 .cse2 (<= 73 ULTIMATE.start_main_~k~0) .cse10 .cse3) (and .cse1 .cse2 .cse11 (<= 36 ULTIMATE.start_main_~k~0) .cse8) (and .cse1 .cse12 .cse2 .cse11) (and .cse1 (<= 22 ULTIMATE.start_main_~k~0) .cse5 .cse2 .cse13) (and .cse1 .cse5 .cse2 .cse14 (<= 52 ULTIMATE.start_main_~k~0)) (and .cse1 .cse2 (<= 59 ULTIMATE.start_main_~k~0) .cse14 .cse15) (and .cse1 .cse2 .cse10 (<= 13 ULTIMATE.start_main_~k~0) .cse7) (and .cse1 .cse16 .cse5 .cse2 (<= 62 ULTIMATE.start_main_~k~0)) (and .cse1 .cse6 (<= 6 ULTIMATE.start_main_~k~0) .cse2 .cse8) (and .cse1 .cse17 (<= 98 ULTIMATE.start_main_~k~0) .cse18 .cse2) (and .cse1 (<= 54 ULTIMATE.start_main_~k~0) .cse19 .cse2 .cse14) (and .cse20 .cse1 .cse5 (<= 82 ULTIMATE.start_main_~k~0) .cse2) (and .cse1 .cse17 .cse2 .cse3 (<= 78 ULTIMATE.start_main_~k~0)) (and .cse20 .cse1 .cse2 .cse10 (<= 83 ULTIMATE.start_main_~k~0)) (and .cse1 (<= 21 ULTIMATE.start_main_~k~0) .cse2 .cse21 .cse13) (and .cse1 .cse6 .cse17 (<= 8 ULTIMATE.start_main_~k~0) .cse2) (and .cse1 .cse2 .cse22 .cse23 .cse3) (and .cse1 .cse6 .cse2 .cse15 (<= 9 ULTIMATE.start_main_~k~0)) (and .cse1 .cse19 .cse2 (<= 24 ULTIMATE.start_main_~k~0) .cse13) (and .cse1 .cse2 .cse11 .cse22 .cse24) (and .cse1 (<= 71 ULTIMATE.start_main_~k~0) .cse2 .cse21 .cse3) (and .cse1 .cse6 .cse2 .cse10 (<= 3 ULTIMATE.start_main_~k~0)) (and .cse1 (<= 39 ULTIMATE.start_main_~k~0) .cse2 .cse11 .cse15) (and .cse1 .cse16 .cse2 (<= 66 ULTIMATE.start_main_~k~0) .cse8) (and .cse1 .cse19 .cse18 .cse2 (<= 94 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 37 ULTIMATE.start_main_~k~0) .cse2 .cse11) (and .cse1 .cse17 .cse2 .cse11 (<= 38 ULTIMATE.start_main_~k~0)) (and .cse1 .cse6 .cse25 .cse2) (and .cse1 (<= 34 ULTIMATE.start_main_~k~0) .cse19 .cse2 .cse11) (and .cse1 .cse16 (<= 61 ULTIMATE.start_main_~k~0) .cse2 .cse21) (and .cse1 .cse2 .cse13 .cse26 (<= 25 ULTIMATE.start_main_~k~0)) (and .cse1 (<= 23 ULTIMATE.start_main_~k~0) .cse2 .cse10 .cse13) (and .cse1 .cse6 .cse2 (<= 5 ULTIMATE.start_main_~k~0) .cse26) (and .cse20 .cse1 .cse27 .cse2 .cse22) (and .cse1 .cse2 (<= 79 ULTIMATE.start_main_~k~0) .cse15 .cse3) (and .cse20 .cse1 .cse17 .cse2 (<= 88 ULTIMATE.start_main_~k~0)) (and .cse1 .cse2 .cse24 .cse13) (and .cse1 .cse2 .cse14 .cse21 (<= 51 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 57 ULTIMATE.start_main_~k~0) .cse2 .cse14) (and .cse1 .cse2 (<= 29 ULTIMATE.start_main_~k~0) .cse15 .cse13) (and .cse1 .cse28 .cse18 .cse2 .cse22) (and .cse1 (<= 93 ULTIMATE.start_main_~k~0) .cse18 .cse2 .cse10) (and .cse1 .cse6 .cse2 .cse22 (<= 0 ULTIMATE.start_main_~k~0)) (and .cse1 .cse18 .cse2 .cse21 (<= 91 ULTIMATE.start_main_~k~0)) (and .cse1 .cse27 .cse2 .cse3) (and .cse1 (<= 31 ULTIMATE.start_main_~k~0) .cse2 .cse11 .cse21) (and .cse0 .cse1 (<= 97 ULTIMATE.start_main_~k~0) .cse18 .cse2) (and .cse20 .cse1 .cse2 .cse21 (<= 81 ULTIMATE.start_main_~k~0)) (and .cse1 .cse2 .cse14 .cse26 (<= 55 ULTIMATE.start_main_~k~0)) (and .cse1 .cse16 .cse19 .cse2 (<= 64 ULTIMATE.start_main_~k~0)) (and .cse1 (<= 69 ULTIMATE.start_main_~k~0) .cse16 .cse2 .cse15) (and .cse1 .cse19 .cse6 .cse2 (<= 4 ULTIMATE.start_main_~k~0)) (and .cse1 .cse12 .cse2 .cse22 .cse4) (and .cse20 .cse1 .cse28 .cse2) (and .cse1 .cse2 .cse29 .cse22 .cse13) (and .cse1 .cse5 .cse2 (<= 32 ULTIMATE.start_main_~k~0) .cse11) (and .cse1 .cse2 .cse8 (<= 46 ULTIMATE.start_main_~k~0) .cse4) (and (<= 44 ULTIMATE.start_main_~k~0) .cse1 .cse19 .cse2 .cse4) (and .cse1 (<= 28 ULTIMATE.start_main_~k~0) .cse17 .cse2 .cse13) (and (<= 49 ULTIMATE.start_main_~k~0) .cse1 .cse2 .cse15 .cse4) (and .cse1 (<= 45 ULTIMATE.start_main_~k~0) .cse2 .cse26 .cse4) (and .cse1 .cse16 .cse17 .cse2 (<= 68 ULTIMATE.start_main_~k~0)) (and .cse20 .cse1 .cse2 (<= 86 ULTIMATE.start_main_~k~0) .cse8) (and .cse1 .cse25 .cse2 .cse22 .cse7) (and .cse0 .cse1 .cse16 .cse2 (<= 67 ULTIMATE.start_main_~k~0)) (and .cse20 (<= 84 ULTIMATE.start_main_~k~0) .cse1 .cse19 .cse2) (and .cse20 .cse1 .cse2 (<= 85 ULTIMATE.start_main_~k~0) .cse26) (and .cse1 .cse18 .cse2 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse1 .cse17 .cse2 (<= 18 ULTIMATE.start_main_~k~0) .cse7) (and .cse1 .cse17 .cse2 .cse14 (<= 58 ULTIMATE.start_main_~k~0)) (and .cse1 (<= 76 ULTIMATE.start_main_~k~0) .cse2 .cse3 .cse8) (and .cse1 (<= 72 ULTIMATE.start_main_~k~0) .cse5 .cse2 .cse3) (and .cse20 .cse0 .cse1 .cse2 (<= 87 ULTIMATE.start_main_~k~0)) (and .cse1 (<= 15 ULTIMATE.start_main_~k~0) .cse2 .cse7 .cse26) (and .cse1 .cse2 (<= 33 ULTIMATE.start_main_~k~0) .cse11 .cse10) (and .cse0 .cse1 .cse6 .cse2 (<= 7 ULTIMATE.start_main_~k~0)) (and .cse1 .cse2 .cse10 (<= 43 ULTIMATE.start_main_~k~0) .cse4) (and .cse1 .cse17 .cse2 (<= 48 ULTIMATE.start_main_~k~0) .cse4) (and .cse1 .cse6 .cse2 (<= 1 ULTIMATE.start_main_~k~0) .cse21) (and .cse1 (<= 41 ULTIMATE.start_main_~k~0) .cse2 .cse21 .cse4) (and .cse1 .cse18 .cse2 (<= 96 ULTIMATE.start_main_~k~0) .cse8) (and .cse1 .cse2 (<= 19 ULTIMATE.start_main_~k~0) .cse15 .cse7) (and .cse1 .cse19 .cse2 (<= 74 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 27 ULTIMATE.start_main_~k~0) .cse2 .cse13) (and .cse1 .cse2 .cse14 .cse10 (<= 53 ULTIMATE.start_main_~k~0)) (and .cse1 .cse2 .cse29 .cse7) (and .cse1 (<= 14 ULTIMATE.start_main_~k~0) .cse19 .cse2 .cse7) (and .cse1 .cse2 .cse26 .cse3 (<= 75 ULTIMATE.start_main_~k~0)) (and .cse1 .cse2 .cse13 .cse8 (<= 26 ULTIMATE.start_main_~k~0)) (and .cse1 .cse18 .cse2 (<= 95 ULTIMATE.start_main_~k~0) .cse26) (and .cse1 .cse16 (<= 63 ULTIMATE.start_main_~k~0) .cse2 .cse10) (and .cse1 .cse16 .cse2 .cse23) (and .cse1 .cse18 .cse2 (<= 99 ULTIMATE.start_main_~k~0) .cse15) (and .cse1 .cse16 .cse2 .cse22 .cse30) (and .cse1 .cse5 .cse18 .cse2 (<= 92 ULTIMATE.start_main_~k~0)) (and .cse1 .cse2 .cse14 .cse9 .cse22) (and .cse0 .cse1 (<= 17 ULTIMATE.start_main_~k~0) .cse2 .cse7) (and .cse1 (<= 11 ULTIMATE.start_main_~k~0) .cse2 .cse21 .cse7) (and .cse20 .cse1 .cse2 (<= 89 ULTIMATE.start_main_~k~0) .cse15) (and .cse1 .cse2 (<= 56 ULTIMATE.start_main_~k~0) .cse14 .cse8) (and .cse1 .cse2 .cse14 .cse30) (and .cse1 .cse2 .cse11 (<= 35 ULTIMATE.start_main_~k~0) .cse26) (and .cse1 .cse16 .cse2 .cse26 (<= 65 ULTIMATE.start_main_~k~0)))) [2020-12-09 09:55:13,307 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-09 09:55:13,307 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-09 09:55:13,307 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (<= 10 ULTIMATE.start_main_~n~0) [2020-12-09 09:55:13,307 INFO L265 CegarLoopResult]: At program point L37(lines 24 38) the Hoare annotation is: true [2020-12-09 09:55:13,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:55:13 BoogieIcfgContainer [2020-12-09 09:55:13,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:55:13,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:55:13,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:55:13,337 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:55:13,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:53:59" (3/4) ... [2020-12-09 09:55:13,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:55:13,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 09:55:13,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 09:55:13,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:55:13,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:55:13,373 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bea539c8-5021-4e82-b5a3-88aef8c7efed/bin/utaipan/witness.graphml [2020-12-09 09:55:13,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:55:13,374 INFO L168 Benchmark]: Toolchain (without parser) took 74443.46 ms. Allocated memory was 86.0 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 56.3 MB in the beginning and 691.6 MB in the end (delta: -635.3 MB). Peak memory consumption was 997.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:55:13,374 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:55:13,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.83 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 63.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:55:13,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 86.0 MB. Free memory was 63.7 MB in the beginning and 62.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:55:13,375 INFO L168 Benchmark]: Boogie Preprocessor took 13.77 ms. Allocated memory is still 86.0 MB. Free memory was 62.4 MB in the beginning and 61.6 MB in the end (delta: 802.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:55:13,376 INFO L168 Benchmark]: RCFGBuilder took 215.77 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 46.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 09:55:13,376 INFO L168 Benchmark]: TraceAbstraction took 73997.12 ms. Allocated memory was 86.0 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 45.6 MB in the beginning and 694.7 MB in the end (delta: -649.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2020-12-09 09:55:13,376 INFO L168 Benchmark]: Witness Printer took 36.87 ms. Allocated memory is still 1.7 GB. Free memory was 694.7 MB in the beginning and 691.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:55:13,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 153.83 ms. Allocated memory is still 86.0 MB. Free memory was 56.1 MB in the beginning and 63.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 86.0 MB. Free memory was 63.7 MB in the beginning and 62.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.77 ms. Allocated memory is still 86.0 MB. Free memory was 62.4 MB in the beginning and 61.6 MB in the end (delta: 802.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 215.77 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 46.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73997.12 ms. Allocated memory was 86.0 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 45.6 MB in the beginning and 694.7 MB in the end (delta: -649.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. * Witness Printer took 36.87 ms. Allocated memory is still 1.7 GB. Free memory was 694.7 MB in the beginning and 691.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 10 <= n - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((((((((10 <= m && 10 <= n) && 100 <= k) || (((10 <= m && i + 3 < n) && 10 <= n) && 60 <= k)) || (((10 <= m && 10 <= n) && i <= 3) && 30 <= k)) || (((10 <= m && 10 <= n) && i + 4 < n) && 50 <= k)) || (((i + 1 < n && 10 <= m) && 80 <= k) && 10 <= n)) || (((10 <= m && 40 <= k) && 10 <= n) && i <= 4)) || (((10 <= m && 10 <= n) && 70 <= k) && i + 2 < n)) || (((10 <= m && i == 0) && 10 <= n) && 0 <= k)) || (((10 <= m && 90 <= k) && 10 <= n) && i < n)) || (((10 <= m && 10 <= n) && 20 <= k) && i <= 2)) || (((10 <= m && 10 <= k) && 10 <= n) && i <= 1) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((j + 2 < m && 10 <= m) && 10 <= n) && i + 2 < n) && 77 <= k) || ((((j + 2 < m && 10 <= m) && 10 <= n) && 47 <= k) && i <= 4)) || ((((10 <= m && j <= 2) && 42 <= k) && 10 <= n) && i <= 4)) || ((((2 <= k && 10 <= m) && j <= 2) && i == 0) && 10 <= n)) || ((((10 <= m && j <= 2) && 12 <= k) && 10 <= n) && i <= 1)) || ((((10 <= m && 16 <= k) && 10 <= n) && i <= 1) && j + 3 < m)) || (((10 <= m && 10 <= n) && 50 <= k) && i <= 4)) || ((((10 <= m && 10 <= n) && 73 <= k) && j <= 3) && i + 2 < n)) || ((((10 <= m && 10 <= n) && i <= 3) && 36 <= k) && j + 3 < m)) || (((10 <= m && 40 <= k) && 10 <= n) && i <= 3)) || ((((10 <= m && 22 <= k) && j <= 2) && 10 <= n) && i <= 2)) || ((((10 <= m && j <= 2) && 10 <= n) && i + 4 < n) && 52 <= k)) || ((((10 <= m && 10 <= n) && 59 <= k) && i + 4 < n) && j < m)) || ((((10 <= m && 10 <= n) && j <= 3) && 13 <= k) && i <= 1)) || ((((10 <= m && i + 3 < n) && j <= 2) && 10 <= n) && 62 <= k)) || ((((10 <= m && i == 0) && 6 <= k) && 10 <= n) && j + 3 < m)) || ((((10 <= m && j + 1 < m) && 98 <= k) && i < n) && 10 <= n)) || ((((10 <= m && 54 <= k) && j <= 4) && 10 <= n) && i + 4 < n)) || ((((i + 1 < n && 10 <= m) && j <= 2) && 82 <= k) && 10 <= n)) || ((((10 <= m && j + 1 < m) && 10 <= n) && i + 2 < n) && 78 <= k)) || ((((i + 1 < n && 10 <= m) && 10 <= n) && j <= 3) && 83 <= k)) || ((((10 <= m && 21 <= k) && 10 <= n) && j <= 1) && i <= 2)) || ((((10 <= m && i == 0) && j + 1 < m) && 8 <= k) && 10 <= n)) || ((((10 <= m && 10 <= n) && j == 0) && 70 <= k) && i + 2 < n)) || ((((10 <= m && i == 0) && 10 <= n) && j < m) && 9 <= k)) || ((((10 <= m && j <= 4) && 10 <= n) && 24 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && i <= 3) && j == 0) && 30 <= k)) || ((((10 <= m && 71 <= k) && 10 <= n) && j <= 1) && i + 2 < n)) || ((((10 <= m && i == 0) && 10 <= n) && j <= 3) && 3 <= k)) || ((((10 <= m && 39 <= k) && 10 <= n) && i <= 3) && j < m)) || ((((10 <= m && i + 3 < n) && 10 <= n) && 66 <= k) && j + 3 < m)) || ((((10 <= m && j <= 4) && i < n) && 10 <= n) && 94 <= k)) || ((((j + 2 < m && 10 <= m) && 37 <= k) && 10 <= n) && i <= 3)) || ((((10 <= m && j + 1 < m) && 10 <= n) && i <= 3) && 38 <= k)) || (((10 <= m && i == 0) && 10 <= k) && 10 <= n)) || ((((10 <= m && 34 <= k) && j <= 4) && 10 <= n) && i <= 3)) || ((((10 <= m && i + 3 < n) && 61 <= k) && 10 <= n) && j <= 1)) || ((((10 <= m && 10 <= n) && i <= 2) && j <= 5) && 25 <= k)) || ((((10 <= m && 23 <= k) && 10 <= n) && j <= 3) && i <= 2)) || ((((10 <= m && i == 0) && 10 <= n) && 5 <= k) && j <= 5)) || ((((i + 1 < n && 10 <= m) && 80 <= k) && 10 <= n) && j == 0)) || ((((10 <= m && 10 <= n) && 79 <= k) && j < m) && i + 2 < n)) || ((((i + 1 < n && 10 <= m) && j + 1 < m) && 10 <= n) && 88 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && i + 4 < n) && j <= 1) && 51 <= k)) || ((((j + 2 < m && 10 <= m) && 57 <= k) && 10 <= n) && i + 4 < n)) || ((((10 <= m && 10 <= n) && 29 <= k) && j < m) && i <= 2)) || ((((10 <= m && 90 <= k) && i < n) && 10 <= n) && j == 0)) || ((((10 <= m && 93 <= k) && i < n) && 10 <= n) && j <= 3)) || ((((10 <= m && i == 0) && 10 <= n) && j == 0) && 0 <= k)) || ((((10 <= m && i < n) && 10 <= n) && j <= 1) && 91 <= k)) || (((10 <= m && 80 <= k) && 10 <= n) && i + 2 < n)) || ((((10 <= m && 31 <= k) && 10 <= n) && i <= 3) && j <= 1)) || ((((j + 2 < m && 10 <= m) && 97 <= k) && i < n) && 10 <= n)) || ((((i + 1 < n && 10 <= m) && 10 <= n) && j <= 1) && 81 <= k)) || ((((10 <= m && 10 <= n) && i + 4 < n) && j <= 5) && 55 <= k)) || ((((10 <= m && i + 3 < n) && j <= 4) && 10 <= n) && 64 <= k)) || ((((10 <= m && 69 <= k) && i + 3 < n) && 10 <= n) && j < m)) || ((((10 <= m && j <= 4) && i == 0) && 10 <= n) && 4 <= k)) || ((((10 <= m && 40 <= k) && 10 <= n) && j == 0) && i <= 4)) || (((i + 1 < n && 10 <= m) && 90 <= k) && 10 <= n)) || ((((10 <= m && 10 <= n) && 20 <= k) && j == 0) && i <= 2)) || ((((10 <= m && j <= 2) && 10 <= n) && 32 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && j + 3 < m) && 46 <= k) && i <= 4)) || ((((44 <= k && 10 <= m) && j <= 4) && 10 <= n) && i <= 4)) || ((((10 <= m && 28 <= k) && j + 1 < m) && 10 <= n) && i <= 2)) || ((((49 <= k && 10 <= m) && 10 <= n) && j < m) && i <= 4)) || ((((10 <= m && 45 <= k) && 10 <= n) && j <= 5) && i <= 4)) || ((((10 <= m && i + 3 < n) && j + 1 < m) && 10 <= n) && 68 <= k)) || ((((i + 1 < n && 10 <= m) && 10 <= n) && 86 <= k) && j + 3 < m)) || ((((10 <= m && 10 <= k) && 10 <= n) && j == 0) && i <= 1)) || ((((j + 2 < m && 10 <= m) && i + 3 < n) && 10 <= n) && 67 <= k)) || ((((i + 1 < n && 84 <= k) && 10 <= m) && j <= 4) && 10 <= n)) || ((((i + 1 < n && 10 <= m) && 10 <= n) && 85 <= k) && j <= 5)) || (((10 <= m && i < n) && 10 <= n) && 100 <= k)) || ((((10 <= m && j + 1 < m) && 10 <= n) && 18 <= k) && i <= 1)) || ((((10 <= m && j + 1 < m) && 10 <= n) && i + 4 < n) && 58 <= k)) || ((((10 <= m && 76 <= k) && 10 <= n) && i + 2 < n) && j + 3 < m)) || ((((10 <= m && 72 <= k) && j <= 2) && 10 <= n) && i + 2 < n)) || ((((i + 1 < n && j + 2 < m) && 10 <= m) && 10 <= n) && 87 <= k)) || ((((10 <= m && 15 <= k) && 10 <= n) && i <= 1) && j <= 5)) || ((((10 <= m && 10 <= n) && 33 <= k) && i <= 3) && j <= 3)) || ((((j + 2 < m && 10 <= m) && i == 0) && 10 <= n) && 7 <= k)) || ((((10 <= m && 10 <= n) && j <= 3) && 43 <= k) && i <= 4)) || ((((10 <= m && j + 1 < m) && 10 <= n) && 48 <= k) && i <= 4)) || ((((10 <= m && i == 0) && 10 <= n) && 1 <= k) && j <= 1)) || ((((10 <= m && 41 <= k) && 10 <= n) && j <= 1) && i <= 4)) || ((((10 <= m && i < n) && 10 <= n) && 96 <= k) && j + 3 < m)) || ((((10 <= m && 10 <= n) && 19 <= k) && j < m) && i <= 1)) || ((((10 <= m && j <= 4) && 10 <= n) && 74 <= k) && i + 2 < n)) || ((((j + 2 < m && 10 <= m) && 27 <= k) && 10 <= n) && i <= 2)) || ((((10 <= m && 10 <= n) && i + 4 < n) && j <= 3) && 53 <= k)) || (((10 <= m && 10 <= n) && 20 <= k) && i <= 1)) || ((((10 <= m && 14 <= k) && j <= 4) && 10 <= n) && i <= 1)) || ((((10 <= m && 10 <= n) && j <= 5) && i + 2 < n) && 75 <= k)) || ((((10 <= m && 10 <= n) && i <= 2) && j + 3 < m) && 26 <= k)) || ((((10 <= m && i < n) && 10 <= n) && 95 <= k) && j <= 5)) || ((((10 <= m && i + 3 < n) && 63 <= k) && 10 <= n) && j <= 3)) || (((10 <= m && i + 3 < n) && 10 <= n) && 70 <= k)) || ((((10 <= m && i < n) && 10 <= n) && 99 <= k) && j < m)) || ((((10 <= m && i + 3 < n) && 10 <= n) && j == 0) && 60 <= k)) || ((((10 <= m && j <= 2) && i < n) && 10 <= n) && 92 <= k)) || ((((10 <= m && 10 <= n) && i + 4 < n) && 50 <= k) && j == 0)) || ((((j + 2 < m && 10 <= m) && 17 <= k) && 10 <= n) && i <= 1)) || ((((10 <= m && 11 <= k) && 10 <= n) && j <= 1) && i <= 1)) || ((((i + 1 < n && 10 <= m) && 10 <= n) && 89 <= k) && j < m)) || ((((10 <= m && 10 <= n) && 56 <= k) && i + 4 < n) && j + 3 < m)) || (((10 <= m && 10 <= n) && i + 4 < n) && 60 <= k)) || ((((10 <= m && 10 <= n) && i <= 3) && 35 <= k) && j <= 5)) || ((((10 <= m && i + 3 < n) && 10 <= n) && j <= 5) && 65 <= k) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.3s, OverallIterations: 7, TraceHistogramMax: 100, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 62.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 448 SDslu, 627 SDs, 0 SdLazy, 541 SolverSat, 172 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 747 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=6, 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, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5123 NumberOfFragments, 2032 HoareAnnotationTreeSize, 4 FomulaSimplifications, 136435 FormulaSimplificationTreeSizeReduction, 33.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 22713 FormulaSimplificationTreeSizeReductionInter, 29.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 484 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 702 ConstructedInterpolants, 0 QuantifiedInterpolants, 194684 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1144 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 19529/21916 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...