./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/string-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_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/string-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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 b312eb4f8caa7cb61d3a06c0594e4f86d10948be .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:38:19,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:38:19,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:38:19,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:38:19,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:38:19,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:38:19,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:38:19,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:38:19,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:38:19,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:38:19,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:38:19,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:38:19,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:38:19,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:38:19,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:38:19,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:38:19,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:38:19,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:38:19,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:38:19,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:38:19,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:38:19,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:38:19,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:38:19,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:38:19,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:38:19,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:38:19,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:38:19,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:38:19,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:38:19,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:38:19,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:38:19,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:38:19,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:38:19,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:38:19,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:38:19,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:38:19,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:38:19,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:38:19,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:38:19,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:38:19,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:38:19,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:38:19,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:38:19,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:38:19,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:38:19,410 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:38:19,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:38:19,410 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:38:19,410 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:38:19,410 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:38:19,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:38:19,411 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:38:19,411 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:38:19,411 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:38:19,411 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:38:19,411 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:38:19,411 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:38:19,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:38:19,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:38:19,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:38:19,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:38:19,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:38:19,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:38:19,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:38:19,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:38:19,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:38:19,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:38:19,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:38:19,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:38:19,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:38:19,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:38:19,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:38:19,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:38:19,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:38:19,415 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_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b312eb4f8caa7cb61d3a06c0594e4f86d10948be [2020-12-09 04:38:19,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:38:19,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:38:19,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:38:19,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:38:19,611 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:38:19,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/../../sv-benchmarks/c/loops/string-1.i [2020-12-09 04:38:19,652 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/data/f6d50bb5e/c8213526838c44d592bb22cc6169dc08/FLAGa2fd26789 [2020-12-09 04:38:20,018 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:38:20,018 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/sv-benchmarks/c/loops/string-1.i [2020-12-09 04:38:20,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/data/f6d50bb5e/c8213526838c44d592bb22cc6169dc08/FLAGa2fd26789 [2020-12-09 04:38:20,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/data/f6d50bb5e/c8213526838c44d592bb22cc6169dc08 [2020-12-09 04:38:20,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:38:20,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:38:20,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:38:20,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:38:20,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:38:20,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1774e8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20, skipping insertion in model container [2020-12-09 04:38:20,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:38:20,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:38:20,162 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_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/sv-benchmarks/c/loops/string-1.i[896,909] [2020-12-09 04:38:20,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:38:20,181 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:38:20,194 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_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/sv-benchmarks/c/loops/string-1.i[896,909] [2020-12-09 04:38:20,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:38:20,215 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:38:20,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20 WrapperNode [2020-12-09 04:38:20,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:38:20,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:38:20,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:38:20,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:38:20,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:38:20,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:38:20,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:38:20,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:38:20,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... [2020-12-09 04:38:20,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:38:20,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:38:20,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:38:20,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:38:20,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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 04:38:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:38:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:38:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 04:38:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:38:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:38:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 04:38:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 04:38:20,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:38:20,578 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-09 04:38:20,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:20 BoogieIcfgContainer [2020-12-09 04:38:20,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:38:20,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:38:20,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:38:20,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:38:20,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:38:20" (1/3) ... [2020-12-09 04:38:20,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9b68ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:38:20, skipping insertion in model container [2020-12-09 04:38:20,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:38:20" (2/3) ... [2020-12-09 04:38:20,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9b68ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:38:20, skipping insertion in model container [2020-12-09 04:38:20,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:20" (3/3) ... [2020-12-09 04:38:20,589 INFO L111 eAbstractionObserver]: Analyzing ICFG string-1.i [2020-12-09 04:38:20,607 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:38:20,610 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 04:38:20,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 04:38:20,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:38:20,646 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:38:20,646 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:38:20,646 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:38:20,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:38:20,646 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:38:20,646 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:38:20,647 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:38:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-09 04:38:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 04:38:20,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:20,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:20,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash 691571467, now seen corresponding path program 1 times [2020-12-09 04:38:20,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:20,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617533519] [2020-12-09 04:38:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:20,822 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 04:38:20,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617533519] [2020-12-09 04:38:20,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:38:20,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:38:20,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793233488] [2020-12-09 04:38:20,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:38:20,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:38:20,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:38:20,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:38:20,839 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-12-09 04:38:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:20,879 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2020-12-09 04:38:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:38:20,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 04:38:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:20,888 INFO L225 Difference]: With dead ends: 43 [2020-12-09 04:38:20,889 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 04:38:20,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:38:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 04:38:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2020-12-09 04:38:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 04:38:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-12-09 04:38:20,917 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 12 [2020-12-09 04:38:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:20,917 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-12-09 04:38:20,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:38:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-12-09 04:38:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 04:38:20,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:20,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:20,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:38:20,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:20,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:20,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2134529921, now seen corresponding path program 1 times [2020-12-09 04:38:20,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:20,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896513976] [2020-12-09 04:38:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:38:20,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896513976] [2020-12-09 04:38:20,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107684740] [2020-12-09 04:38:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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 04:38:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:21,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:38:21,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:38:21,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:38:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:38:21,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761031491] [2020-12-09 04:38:21,091 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 04:38:21,091 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:38:21,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:38:21,098 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:38:21,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:38:21,777 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:38:22,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:38:22,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [3, 3, 3] total 17 [2020-12-09 04:38:22,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991966046] [2020-12-09 04:38:22,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 04:38:22,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:38:22,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 04:38:22,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-12-09 04:38:22,515 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 13 states. [2020-12-09 04:38:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:22,637 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2020-12-09 04:38:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 04:38:22,637 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-12-09 04:38:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:22,638 INFO L225 Difference]: With dead ends: 33 [2020-12-09 04:38:22,638 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 04:38:22,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-12-09 04:38:22,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 04:38:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-12-09 04:38:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 04:38:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-12-09 04:38:22,643 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2020-12-09 04:38:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:22,643 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-12-09 04:38:22,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 04:38:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-12-09 04:38:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 04:38:22,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:22,644 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:22,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 04:38:22,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:22,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1226915996, now seen corresponding path program 1 times [2020-12-09 04:38:22,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:22,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163604425] [2020-12-09 04:38:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 04:38:22,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163604425] [2020-12-09 04:38:22,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391865862] [2020-12-09 04:38:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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 04:38:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:38:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 04:38:22,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:38:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 04:38:22,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [820346449] [2020-12-09 04:38:22,966 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 04:38:22,966 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:38:22,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:38:22,966 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:38:22,966 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:38:23,417 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:38:23,951 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-12-09 04:38:24,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:38:24,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 16 [2020-12-09 04:38:24,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968368278] [2020-12-09 04:38:24,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 04:38:24,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:38:24,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 04:38:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-12-09 04:38:24,198 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 12 states. [2020-12-09 04:38:24,383 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-12-09 04:38:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:24,423 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-12-09 04:38:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 04:38:24,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-09 04:38:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:24,424 INFO L225 Difference]: With dead ends: 32 [2020-12-09 04:38:24,424 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 04:38:24,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-12-09 04:38:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 04:38:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-09 04:38:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 04:38:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-12-09 04:38:24,427 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 18 [2020-12-09 04:38:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:24,427 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-12-09 04:38:24,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 04:38:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-09 04:38:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 04:38:24,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:24,428 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:24,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:38:24,630 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash -513901446, now seen corresponding path program 1 times [2020-12-09 04:38:24,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:24,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601536548] [2020-12-09 04:38:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 04:38:24,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601536548] [2020-12-09 04:38:24,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736448533] [2020-12-09 04:38:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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 04:38:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:24,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:38:24,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 04:38:24,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:38:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 04:38:24,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1634260852] [2020-12-09 04:38:24,747 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 04:38:24,747 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:38:24,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:38:24,747 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:38:24,748 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:38:25,134 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:38:25,481 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-12-09 04:38:25,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:38:25,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 16 [2020-12-09 04:38:25,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196862634] [2020-12-09 04:38:25,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 04:38:25,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:38:25,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 04:38:25,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-12-09 04:38:25,772 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 12 states. [2020-12-09 04:38:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:26,125 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-12-09 04:38:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 04:38:26,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-09 04:38:26,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:26,126 INFO L225 Difference]: With dead ends: 29 [2020-12-09 04:38:26,126 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 04:38:26,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-12-09 04:38:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 04:38:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-12-09 04:38:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 04:38:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-09 04:38:26,129 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2020-12-09 04:38:26,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:26,129 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-09 04:38:26,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 04:38:26,129 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-09 04:38:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 04:38:26,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:26,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:26,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:38:26,332 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:26,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:26,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1418887327, now seen corresponding path program 1 times [2020-12-09 04:38:26,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:26,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431479647] [2020-12-09 04:38:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 04:38:26,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431479647] [2020-12-09 04:38:26,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455077033] [2020-12-09 04:38:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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 04:38:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:26,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:38:26,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 04:38:26,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:38:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 04:38:26,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1103971624] [2020-12-09 04:38:26,447 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 04:38:26,447 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:38:26,447 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:38:26,447 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:38:26,447 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:38:26,859 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:38:27,216 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-12-09 04:38:27,449 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-12-09 04:38:27,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:38:27,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 14 [2020-12-09 04:38:27,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161510396] [2020-12-09 04:38:27,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 04:38:27,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:38:27,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 04:38:27,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-12-09 04:38:27,641 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 10 states. [2020-12-09 04:38:27,838 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-09 04:38:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:27,865 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-12-09 04:38:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 04:38:27,865 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-09 04:38:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:27,865 INFO L225 Difference]: With dead ends: 26 [2020-12-09 04:38:27,866 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 04:38:27,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-12-09 04:38:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 04:38:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-09 04:38:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 04:38:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-12-09 04:38:27,869 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 20 [2020-12-09 04:38:27,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:27,869 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-12-09 04:38:27,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 04:38:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-09 04:38:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 04:38:27,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:38:27,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:38:28,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-12-09 04:38:28,071 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:38:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:38:28,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1035910130, now seen corresponding path program 1 times [2020-12-09 04:38:28,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:38:28,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730492787] [2020-12-09 04:38:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:38:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 04:38:28,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730492787] [2020-12-09 04:38:28,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119102577] [2020-12-09 04:38:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/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 04:38:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:38:28,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:38:28,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:38:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 04:38:28,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:38:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 04:38:28,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [962389492] [2020-12-09 04:38:28,169 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 04:38:28,169 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:38:28,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:38:28,170 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:38:28,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:38:28,617 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:38:28,977 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-12-09 04:38:29,200 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-12-09 04:38:29,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:38:29,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 14 [2020-12-09 04:38:29,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206037529] [2020-12-09 04:38:29,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 04:38:29,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:38:29,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 04:38:29,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-09 04:38:29,400 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 10 states. [2020-12-09 04:38:29,587 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-09 04:38:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:38:29,647 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-12-09 04:38:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 04:38:29,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-12-09 04:38:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:38:29,648 INFO L225 Difference]: With dead ends: 22 [2020-12-09 04:38:29,648 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:38:29,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-12-09 04:38:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:38:29,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:38:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:38:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:38:29,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-09 04:38:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:38:29,649 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:38:29,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 04:38:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:38:29,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:38:29,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-12-09 04:38:29,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 04:38:30,149 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-12-09 04:38:30,274 INFO L262 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-12-09 04:38:30,274 INFO L265 CegarLoopResult]: At program point L19-2(lines 18 23) the Hoare annotation is: true [2020-12-09 04:38:30,274 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 04:38:30,274 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2020-12-09 04:38:30,274 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-09 04:38:30,274 INFO L258 CegarLoopResult]: At program point L37-3(lines 37 38) the Hoare annotation is: (and (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_main_~i~0) (<= |ULTIMATE.start_main_~#string_B~0.offset| 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#string_B~0.base|) (<= 0 |#t~string1.base|) (<= 0 |ULTIMATE.start_main_~#string_A~0.base|) (= ULTIMATE.start_main_~found~0 0) (<= |ULTIMATE.start_main_~#string_A~0.offset| 0) (<= 0 |ULTIMATE.start_main_~#string_B~0.offset|) (= |#NULL.offset| 0) (= |#t~string0.offset| 0) (<= 0 |ULTIMATE.start_main_~#string_A~0.offset|) (<= 0 |#StackHeapBarrier|)) [2020-12-09 04:38:30,274 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 04:38:30,275 INFO L258 CegarLoopResult]: At program point L33-3(lines 33 34) the Hoare annotation is: (and (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_main_~i~0) (<= |ULTIMATE.start_main_~#string_B~0.offset| 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#string_B~0.base|) (<= 0 |#t~string1.base|) (<= 0 |ULTIMATE.start_main_~#string_A~0.base|) (= ULTIMATE.start_main_~found~0 0) (<= |ULTIMATE.start_main_~#string_A~0.offset| 0) (<= 0 |ULTIMATE.start_main_~#string_B~0.offset|) (= |#NULL.offset| 0) (= |#t~string0.offset| 0) (<= 0 |ULTIMATE.start_main_~#string_A~0.offset|) (<= 0 |#StackHeapBarrier|)) [2020-12-09 04:38:30,275 INFO L262 CegarLoopResult]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2020-12-09 04:38:30,275 INFO L258 CegarLoopResult]: At program point L46-3(lines 46 47) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#string_B~0.base|) (<= 0 |#t~string1.base|) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (<= 0 |#t~string0.base|)) (.cse2 (= ULTIMATE.start_main_~found~0 0)) (.cse3 (<= 0 ULTIMATE.start_main_~nc_A~0)) (.cse4 (= |#NULL.base| 0)) (.cse5 (<= 5 ULTIMATE.start_main_~i~0)) (.cse6 (= |#NULL.offset| 0)) (.cse7 (= |ULTIMATE.start_main_~#string_A~0.offset| 0)) (.cse8 (= |#t~string0.offset| 0)) (.cse9 (= |ULTIMATE.start_main_~#string_B~0.offset| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~nc_B~0 0) .cse7 .cse8 .cse9) (and .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start_main_~nc_B~0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) (or (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_B~0.base|) (+ |ULTIMATE.start_main_~#string_B~0.offset| 4)) 0) (<= 1 ULTIMATE.start_main_~nc_A~0)) (<= 0 |ULTIMATE.start_main_~#string_A~0.base|) (<= 0 |#StackHeapBarrier|)) [2020-12-09 04:38:30,275 INFO L262 CegarLoopResult]: For program point L46-4(lines 29 72) no Hoare annotation was computed. [2020-12-09 04:38:30,275 INFO L262 CegarLoopResult]: For program point L42-1(lines 42 43) no Hoare annotation was computed. [2020-12-09 04:38:30,275 INFO L258 CegarLoopResult]: At program point L42-3(lines 42 43) the Hoare annotation is: (and (<= 0 |#t~string0.base|) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= ULTIMATE.start_main_~found~0 0)) (.cse2 (= |#NULL.base| 0)) (.cse3 (= |#NULL.offset| 0)) (.cse4 (= |ULTIMATE.start_main_~#string_A~0.offset| 0)) (.cse5 (= |ULTIMATE.start_main_~#string_B~0.offset| 0))) (or (and .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~nc_A~0) .cse3 .cse4 .cse5) (and .cse0 .cse1 (= ULTIMATE.start_main_~nc_A~0 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_B~0.base|) (+ |ULTIMATE.start_main_~#string_B~0.offset| 4)) 0) .cse2 .cse3 .cse4 .cse5))) (<= 5 ULTIMATE.start_main_~i~0) (<= 0 |ULTIMATE.start_main_~#string_B~0.base|) (<= 0 |#t~string1.base|) (= |#t~string0.offset| 0) (<= 0 |ULTIMATE.start_main_~#string_A~0.base|) (<= 0 |#StackHeapBarrier|)) [2020-12-09 04:38:30,275 INFO L265 CegarLoopResult]: At program point L71(lines 28 72) the Hoare annotation is: true [2020-12-09 04:38:30,275 INFO L262 CegarLoopResult]: For program point L42-4(lines 42 43) no Hoare annotation was computed. [2020-12-09 04:38:30,275 INFO L258 CegarLoopResult]: At program point L55-2(lines 53 65) the Hoare annotation is: (and (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= |ULTIMATE.start_main_~#string_B~0.offset| 0) (<= 0 ULTIMATE.start_main_~j~0) (<= 0 ULTIMATE.start_main_~nc_A~0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#string_B~0.base|) (<= 0 |#t~string1.base|) (<= 0 |ULTIMATE.start_main_~#string_A~0.base|) (= ULTIMATE.start_main_~found~0 0) (<= 0 ULTIMATE.start_main_~nc_B~0) (<= |ULTIMATE.start_main_~#string_A~0.offset| 0) (<= 0 |ULTIMATE.start_main_~#string_B~0.offset|) (= |#NULL.offset| 0) (= |#t~string0.offset| 0) (<= 0 |ULTIMATE.start_main_~#string_A~0.offset|) (<= 0 |#StackHeapBarrier|)) [2020-12-09 04:38:30,276 INFO L262 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-12-09 04:38:30,276 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-09 04:38:30,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:38:30 BoogieIcfgContainer [2020-12-09 04:38:30,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:38:30,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:38:30,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:38:30,293 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:38:30,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:38:20" (3/4) ... [2020-12-09 04:38:30,295 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:38:30,302 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-12-09 04:38:30,302 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 04:38:30,303 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 04:38:30,303 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 04:38:30,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4e93a385-2b9f-42bc-bbc3-dd9d32ad51c5/bin/utaipan/witness.graphml [2020-12-09 04:38:30,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:38:30,330 INFO L168 Benchmark]: Toolchain (without parser) took 10291.11 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 63.0 MB in the beginning and 119.9 MB in the end (delta: -56.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:30,331 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:38:30,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.33 ms. Allocated memory is still 86.0 MB. Free memory was 62.8 MB in the beginning and 64.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:30,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 86.0 MB. Free memory was 64.1 MB in the beginning and 62.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:38:30,332 INFO L168 Benchmark]: Boogie Preprocessor took 24.64 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 61.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:30,332 INFO L168 Benchmark]: RCFGBuilder took 312.10 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 37.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:30,332 INFO L168 Benchmark]: TraceAbstraction took 9711.05 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 37.0 MB in the beginning and 123.0 MB in the end (delta: -86.0 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:30,332 INFO L168 Benchmark]: Witness Printer took 36.97 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 119.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:38:30,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.33 ms. Allocated memory is still 86.0 MB. Free memory was 62.8 MB in the beginning and 64.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 86.0 MB. Free memory was 64.1 MB in the beginning and 62.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.64 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 61.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 312.10 ms. Allocated memory is still 86.0 MB. Free memory was 61.0 MB in the beginning and 37.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9711.05 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 37.0 MB in the beginning and 123.0 MB in the end (delta: -86.0 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.1 GB. * Witness Printer took 36.97 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 119.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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: 53]: Loop Invariant Derived loop invariant: ((((((((((((((("string-1.c" == 0 && 0 <= "0") && string_B <= 0) && 0 <= j) && 0 <= nc_A) && #NULL == 0) && 0 <= string_B) && 0 <= "string-1.c") && 0 <= string_A) && found == 0) && 0 <= nc_B) && string_A <= 0) && 0 <= string_B) && #NULL == 0) && "0" == 0) && 0 <= string_A) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((0 <= string_B && 0 <= "string-1.c") && ((((((((((("string-1.c" == 0 && 0 <= "0") && found == 0) && 0 <= nc_A) && #NULL == 0) && 5 <= i) && #NULL == 0) && nc_B == 0) && string_A == 0) && "0" == 0) && string_B == 0) || (((((((((("string-1.c" == 0 && 0 <= "0") && found == 0) && 0 <= nc_A) && 1 <= nc_B) && #NULL == 0) && 5 <= i) && #NULL == 0) && string_A == 0) && "0" == 0) && string_B == 0))) && (unknown-#memory_int-unknown[string_B][string_B + 4] == 0 || 1 <= nc_A)) && 0 <= string_A) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((0 <= "0" && ((((((("string-1.c" == 0 && found == 0) && #NULL == 0) && 1 <= nc_A) && #NULL == 0) && string_A == 0) && string_B == 0) || ((((((("string-1.c" == 0 && found == 0) && nc_A == 0) && unknown-#memory_int-unknown[string_B][string_B + 4] == 0) && #NULL == 0) && #NULL == 0) && string_A == 0) && string_B == 0))) && 5 <= i) && 0 <= string_B) && 0 <= "string-1.c") && "0" == 0) && 0 <= string_A) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((((("string-1.c" == 0 && 0 <= "0") && 0 <= i) && string_B <= 0) && #NULL == 0) && 0 <= string_B) && 0 <= "string-1.c") && 0 <= string_A) && found == 0) && string_A <= 0) && 0 <= string_B) && #NULL == 0) && "0" == 0) && 0 <= string_A) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((((((("string-1.c" == 0 && 0 <= "0") && 0 <= i) && string_B <= 0) && #NULL == 0) && 0 <= string_B) && 0 <= "string-1.c") && 0 <= string_A) && found == 0) && string_A <= 0) && 0 <= string_B) && #NULL == 0) && "0" == 0) && 0 <= string_A) && 0 <= unknown-#StackHeapBarrier-unknown - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 90 SDslu, 86 SDs, 0 SdLazy, 493 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 203 SyntacticMatches, 10 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 25 NumberOfFragments, 317 HoareAnnotationTreeSize, 7 FomulaSimplifications, 601 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 681 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 5891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 54/69 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: OVERALL_TIME[ms]: 2386, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 70, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 140, TOOLS_POST_TIME[ms]: 1428, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 140, TOOLS_QUANTIFIERELIM_TIME[ms]: 1403, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 136, FLUID_QUERY_TIME[ms]: 7, FLUID_QUERIES: 329, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 88, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 34, DOMAIN_WIDEN_TIME[ms]: 657, DOMAIN_ISSUBSETEQ_APPLICATIONS: 51, DOMAIN_ISSUBSETEQ_TIME[ms]: 82, DOMAIN_ISBOTTOM_APPLICATIONS: 70, DOMAIN_ISBOTTOM_TIME[ms]: 58, LOOP_SUMMARIZER_APPLICATIONS: 17, LOOP_SUMMARIZER_CACHE_MISSES: 17, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 1738, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 1738, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 51, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 19, DAG_COMPRESSION_PROCESSED_NODES: 950, DAG_COMPRESSION_RETAINED_NODES: 228, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...