./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64cd7ac5eb0a9d67f170f7116fe70bfc33ede6496f7f1decfe8a4115f59f37aa ................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:50:25,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:50:25,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:50:25,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:50:25,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:50:25,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:50:25,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:50:25,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:50:25,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:50:25,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:50:25,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:50:25,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:50:25,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:50:25,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:50:25,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:50:25,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:50:25,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:50:25,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:50:25,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:50:25,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:50:25,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:50:25,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:50:25,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:50:25,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:50:25,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:50:25,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:50:25,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:50:25,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:50:25,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:50:25,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:50:25,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:50:25,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:50:25,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:50:25,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:50:25,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:50:25,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:50:25,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:50:25,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:50:25,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:50:25,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:50:25,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:50:25,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-20 05:50:25,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:50:25,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:50:25,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:50:25,397 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:50:25,397 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:50:25,398 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:50:25,398 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:50:25,398 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:50:25,407 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:50:25,407 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:50:25,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:50:25,409 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:50:25,409 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:50:25,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:50:25,410 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:50:25,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:50:25,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:50:25,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:50:25,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:50:25,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:50:25,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:50:25,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:50:25,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:50:25,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:50:25,414 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-20 05:50:25,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:50:25,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:50:25,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:50:25,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:50:25,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:50:25,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:50:25,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:50:25,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:50:25,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:50:25,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:50:25,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:50:25,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:50:25,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:50:25,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:50:25,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:50:25,419 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_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64cd7ac5eb0a9d67f170f7116fe70bfc33ede6496f7f1decfe8a4115f59f37aa [2021-10-20 05:50:25,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:50:25,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:50:25,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:50:25,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:50:25,742 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:50:25,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2021-10-20 05:50:25,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/data/458d9d443/5be8b394706c402083d8a289280d4640/FLAG07210590e [2021-10-20 05:50:26,404 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:50:26,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2021-10-20 05:50:26,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/data/458d9d443/5be8b394706c402083d8a289280d4640/FLAG07210590e [2021-10-20 05:50:26,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/data/458d9d443/5be8b394706c402083d8a289280d4640 [2021-10-20 05:50:26,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:50:26,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:50:26,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:50:26,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:50:26,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:50:26,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:26" (1/1) ... [2021-10-20 05:50:26,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63748460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:26, skipping insertion in model container [2021-10-20 05:50:26,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:26" (1/1) ... [2021-10-20 05:50:26,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:50:26,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:50:27,028 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-10-20 05:50:27,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:50:27,048 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:50:27,060 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-10-20 05:50:27,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:50:27,077 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:50:27,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27 WrapperNode [2021-10-20 05:50:27,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:50:27,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:50:27,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:50:27,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:50:27,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:50:27,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:50:27,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:50:27,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:50:27,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:50:27,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:50:27,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:50:27,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:50:27,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (1/1) ... [2021-10-20 05:50:27,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:50:27,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:50:27,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:50:27,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:50:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:50:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:50:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:50:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:50:27,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:50:27,529 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 05:50:27,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:27 BoogieIcfgContainer [2021-10-20 05:50:27,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:50:27,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:50:27,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:50:27,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:50:27,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:50:26" (1/3) ... [2021-10-20 05:50:27,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa7448a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:27, skipping insertion in model container [2021-10-20 05:50:27,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:27" (2/3) ... [2021-10-20 05:50:27,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa7448a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:27, skipping insertion in model container [2021-10-20 05:50:27,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:27" (3/3) ... [2021-10-20 05:50:27,540 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2021-10-20 05:50:27,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:50:27,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-20 05:50:27,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:50:27,601 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:50:27,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-20 05:50:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 05:50:27,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:50:27,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 05:50:27,621 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-20 05:50:27,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:50:27,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2241565, now seen corresponding path program 1 times [2021-10-20 05:50:27,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:50:27,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631363287] [2021-10-20 05:50:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:50:27,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:50:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:50:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:50:27,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:50:27,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631363287] [2021-10-20 05:50:27,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631363287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:50:27,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:50:27,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:50:27,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768127793] [2021-10-20 05:50:27,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:50:27,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:50:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:50:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:50:27,874 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:50:27,928 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-20 05:50:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:50:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-20 05:50:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:50:27,939 INFO L225 Difference]: With dead ends: 15 [2021-10-20 05:50:27,940 INFO L226 Difference]: Without dead ends: 11 [2021-10-20 05:50:27,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:50:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-20 05:50:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-20 05:50:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-20 05:50:27,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-20 05:50:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:50:27,980 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-20 05:50:27,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-20 05:50:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:50:27,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:50:27,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:50:27,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:50:27,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-20 05:50:27,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:50:27,984 INFO L82 PathProgramCache]: Analyzing trace with hash 69488565, now seen corresponding path program 1 times [2021-10-20 05:50:27,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:50:27,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737161051] [2021-10-20 05:50:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:50:27,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:50:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:50:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:50:28,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:50:28,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737161051] [2021-10-20 05:50:28,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737161051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:50:28,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:50:28,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:50:28,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737680704] [2021-10-20 05:50:28,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:50:28,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:50:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:50:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:50:28,050 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:50:28,085 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-20 05:50:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:50:28,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 05:50:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:50:28,087 INFO L225 Difference]: With dead ends: 11 [2021-10-20 05:50:28,087 INFO L226 Difference]: Without dead ends: 10 [2021-10-20 05:50:28,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:50:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-20 05:50:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-20 05:50:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-20 05:50:28,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-20 05:50:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:50:28,094 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-20 05:50:28,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-20 05:50:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:50:28,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:50:28,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:50:28,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:50:28,098 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-20 05:50:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:50:28,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2140821729, now seen corresponding path program 1 times [2021-10-20 05:50:28,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:50:28,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854781028] [2021-10-20 05:50:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:50:28,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:50:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:50:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:50:28,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:50:28,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854781028] [2021-10-20 05:50:28,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854781028] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:50:28,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:50:28,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:50:28,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881245222] [2021-10-20 05:50:28,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:50:28,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:50:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:50:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:50:28,279 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:50:28,310 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-20 05:50:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:50:28,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-20 05:50:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:50:28,313 INFO L225 Difference]: With dead ends: 10 [2021-10-20 05:50:28,313 INFO L226 Difference]: Without dead ends: 9 [2021-10-20 05:50:28,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:50:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-20 05:50:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-20 05:50:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-20 05:50:28,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-20 05:50:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:50:28,319 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-20 05:50:28,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-20 05:50:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:50:28,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:50:28,321 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:50:28,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 05:50:28,322 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-20 05:50:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:50:28,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1940964105, now seen corresponding path program 1 times [2021-10-20 05:50:28,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:50:28,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163731345] [2021-10-20 05:50:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:50:28,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:50:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:50:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:50:28,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:50:28,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163731345] [2021-10-20 05:50:28,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163731345] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:50:28,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:50:28,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 05:50:28,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937814699] [2021-10-20 05:50:28,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:50:28,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:50:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:50:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:50:28,418 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:50:28,453 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-20 05:50:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:50:28,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 05:50:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:50:28,467 INFO L225 Difference]: With dead ends: 9 [2021-10-20 05:50:28,467 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:50:28,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:50:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:50:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:50:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:50:28,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-20 05:50:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:50:28,469 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:50:28,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:50:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:50:28,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:50:28,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 05:50:28,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 05:50:28,474 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 05:50:28,474 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 05:50:28,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 05:50:28,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 05:50:28,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:50:28,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:50:28,524 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-20 05:50:28,524 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 05:50:28,524 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-20 05:50:28,525 INFO L853 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-20 05:50:28,525 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-20 05:50:28,525 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-20 05:50:28,525 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-10-20 05:50:28,526 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2021-10-20 05:50:28,526 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-20 05:50:28,526 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-20 05:50:28,527 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 05:50:28,527 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-20 05:50:28,527 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-20 05:50:28,527 INFO L857 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-10-20 05:50:28,528 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-20 05:50:28,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:50:28,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:50:28 BoogieIcfgContainer [2021-10-20 05:50:28,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:50:28,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:50:28,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:50:28,549 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:50:28,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:27" (3/4) ... [2021-10-20 05:50:28,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:50:28,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-20 05:50:28,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-20 05:50:28,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:50:28,566 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:50:28,606 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:50:28,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:50:28,612 INFO L168 Benchmark]: Toolchain (without parser) took 1824.39 ms. Allocated memory is still 132.1 MB. Free memory was 99.2 MB in the beginning and 95.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 981.7 kB. Max. memory is 16.1 GB. [2021-10-20 05:50:28,613 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:50:28,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.76 ms. Allocated memory is still 132.1 MB. Free memory was 98.9 MB in the beginning and 108.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:50:28,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 132.1 MB. Free memory was 108.6 MB in the beginning and 107.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:50:28,617 INFO L168 Benchmark]: Boogie Preprocessor took 50.33 ms. Allocated memory is still 132.1 MB. Free memory was 107.0 MB in the beginning and 106.1 MB in the end (delta: 873.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:50:28,617 INFO L168 Benchmark]: RCFGBuilder took 358.12 ms. Allocated memory is still 132.1 MB. Free memory was 106.1 MB in the beginning and 95.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:50:28,618 INFO L168 Benchmark]: TraceAbstraction took 1015.05 ms. Allocated memory is still 132.1 MB. Free memory was 94.8 MB in the beginning and 98.2 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:50:28,618 INFO L168 Benchmark]: Witness Printer took 60.58 ms. Allocated memory is still 132.1 MB. Free memory was 98.2 MB in the beginning and 95.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:50:28,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.76 ms. Allocated memory is still 132.1 MB. Free memory was 98.9 MB in the beginning and 108.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 132.1 MB. Free memory was 108.6 MB in the beginning and 107.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.33 ms. Allocated memory is still 132.1 MB. Free memory was 107.0 MB in the beginning and 106.1 MB in the end (delta: 873.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 358.12 ms. Allocated memory is still 132.1 MB. Free memory was 106.1 MB in the beginning and 95.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1015.05 ms. Allocated memory is still 132.1 MB. Free memory was 94.8 MB in the beginning and 98.2 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 60.58 ms. Allocated memory is still 132.1 MB. Free memory was 98.2 MB in the beginning and 95.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 940.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 12.1ms, AutomataDifference: 225.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 48.2ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 25 SDslu, 22 SDs, 0 SdLazy, 40 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.5ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 7.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 21.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 17.3ms SsaConstructionTime, 146.8ms SatisfiabilityAnalysisTime, 218.5ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((y <= 2147483647 && 0 <= y) && 0 <= x) && x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-20 05:50:28,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676858d-2fee-4ab6-80f4-4439ae034f6f/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...