./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8 --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 950600dbb36b2cdf644bab2e11db14741ba73676 ................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:11:55,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:11:55,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:11:55,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:11:55,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:11:55,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:11:55,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:11:55,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:11:55,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:11:55,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:11:55,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:11:55,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:11:55,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:11:55,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:11:55,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:11:55,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:11:55,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:11:55,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:11:55,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:11:55,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:11:55,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:11:55,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:11:55,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:11:55,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:11:55,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:11:55,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:11:55,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:11:55,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:11:55,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:11:55,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:11:55,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:11:55,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:11:55,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:11:55,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:11:55,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:11:55,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:11:55,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:11:55,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:11:55,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:11:55,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:11:55,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:11:55,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 07:11:55,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:11:55,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:11:55,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:11:55,714 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:11:55,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:11:55,715 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:11:55,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:11:55,715 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:11:55,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:11:55,716 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:11:55,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:11:55,716 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:11:55,717 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:11:55,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:11:55,717 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:11:55,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:11:55,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:11:55,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:11:55,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:11:55,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:11:55,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:11:55,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:11:55,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:11:55,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:11:55,721 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:11:55,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:11:55,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:11:55,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:11:55,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:11:55,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:11:55,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:11:55,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:11:55,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:11:55,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:11:55,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:11:55,724 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:11:55,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:11:55,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:11:55,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:11:55,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:11:55,725 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_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950600dbb36b2cdf644bab2e11db14741ba73676 [2021-10-13 07:11:56,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:11:56,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:11:56,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:11:56,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:11:56,120 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:11:56,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2021-10-13 07:11:56,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/data/9ad425cf5/b393ea95ff434bc1a97f60e8e1dbc935/FLAGbda2c496a [2021-10-13 07:11:56,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:11:56,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2021-10-13 07:11:56,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/data/9ad425cf5/b393ea95ff434bc1a97f60e8e1dbc935/FLAGbda2c496a [2021-10-13 07:11:57,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/data/9ad425cf5/b393ea95ff434bc1a97f60e8e1dbc935 [2021-10-13 07:11:57,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:11:57,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:11:57,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:11:57,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:11:57,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:11:57,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d40f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57, skipping insertion in model container [2021-10-13 07:11:57,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:11:57,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:11:57,462 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_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-10-13 07:11:57,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:11:57,478 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:11:57,490 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_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i[873,886] [2021-10-13 07:11:57,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:11:57,511 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:11:57,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57 WrapperNode [2021-10-13 07:11:57,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:11:57,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:11:57,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:11:57,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:11:57,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:11:57,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:11:57,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:11:57,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:11:57,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:11:57,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:11:57,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:11:57,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:11:57,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (1/1) ... [2021-10-13 07:11:57,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:11:57,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:11:57,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:11:57,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:11:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:11:57,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:11:57,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:11:57,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:11:57,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:11:57,994 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:11:57,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:57 BoogieIcfgContainer [2021-10-13 07:11:57,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:11:58,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:11:58,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:11:58,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:11:58,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:11:57" (1/3) ... [2021-10-13 07:11:58,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3f3220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:58, skipping insertion in model container [2021-10-13 07:11:58,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:57" (2/3) ... [2021-10-13 07:11:58,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3f3220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:58, skipping insertion in model container [2021-10-13 07:11:58,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:57" (3/3) ... [2021-10-13 07:11:58,008 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2021-10-13 07:11:58,015 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:11:58,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 07:11:58,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:11:58,081 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, mConcurrency=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 [2021-10-13 07:11:58,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 07:11:58,119 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) [2021-10-13 07:11:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:11:58,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:58,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:11:58,130 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)] === [2021-10-13 07:11:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2241565, now seen corresponding path program 1 times [2021-10-13 07:11:58,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:11:58,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376970943] [2021-10-13 07:11:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:58,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:11:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:58,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:11:58,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376970943] [2021-10-13 07:11:58,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376970943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:58,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:58,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:11:58,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013393340] [2021-10-13 07:11:58,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:11:58,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:11:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:11:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:11:58,477 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) [2021-10-13 07:11:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:58,570 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-13 07:11:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:58,572 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 [2021-10-13 07:11:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:58,580 INFO L225 Difference]: With dead ends: 15 [2021-10-13 07:11:58,580 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:11:58,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:11:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:11:58,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:11:58,618 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) [2021-10-13 07:11:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-13 07:11:58,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-13 07:11:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:58,621 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-13 07:11:58,621 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) [2021-10-13 07:11:58,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-13 07:11:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:11:58,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:58,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:11:58,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:11:58,623 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)] === [2021-10-13 07:11:58,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:58,624 INFO L82 PathProgramCache]: Analyzing trace with hash 69488565, now seen corresponding path program 1 times [2021-10-13 07:11:58,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:11:58,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949874031] [2021-10-13 07:11:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:58,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:11:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:58,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:11:58,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949874031] [2021-10-13 07:11:58,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949874031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:58,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:58,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:11:58,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558948133] [2021-10-13 07:11:58,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:11:58,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:11:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:11:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:11:58,691 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) [2021-10-13 07:11:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:58,714 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-13 07:11:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:58,715 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 [2021-10-13 07:11:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:58,716 INFO L225 Difference]: With dead ends: 11 [2021-10-13 07:11:58,716 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 07:11:58,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:11:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 07:11:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 07:11:58,720 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) [2021-10-13 07:11:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 07:11:58,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-13 07:11:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:58,721 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 07:11:58,722 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) [2021-10-13 07:11:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 07:11:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:11:58,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:58,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:11:58,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:11:58,724 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)] === [2021-10-13 07:11:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:58,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2140821729, now seen corresponding path program 1 times [2021-10-13 07:11:58,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:11:58,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451029692] [2021-10-13 07:11:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:58,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:11:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:58,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:11:58,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451029692] [2021-10-13 07:11:58,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451029692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:58,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:58,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:11:58,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184931881] [2021-10-13 07:11:58,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:11:58,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:11:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:11:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:11:58,785 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) [2021-10-13 07:11:58,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:58,812 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-13 07:11:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:58,813 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 [2021-10-13 07:11:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:58,814 INFO L225 Difference]: With dead ends: 10 [2021-10-13 07:11:58,814 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:11:58,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:11:58,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:11:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:11:58,818 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) [2021-10-13 07:11:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 07:11:58,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-13 07:11:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:58,820 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 07:11:58,820 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) [2021-10-13 07:11:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 07:11:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:11:58,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:58,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:11:58,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:11:58,822 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)] === [2021-10-13 07:11:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1940964105, now seen corresponding path program 1 times [2021-10-13 07:11:58,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:11:58,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263869211] [2021-10-13 07:11:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:58,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:11:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:58,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:11:58,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263869211] [2021-10-13 07:11:58,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263869211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:58,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:58,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:11:58,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542772855] [2021-10-13 07:11:58,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:11:58,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:11:58,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:11:58,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:11:58,879 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) [2021-10-13 07:11:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:58,910 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-13 07:11:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:58,911 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 [2021-10-13 07:11:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:58,913 INFO L225 Difference]: With dead ends: 9 [2021-10-13 07:11:58,914 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:11:58,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:11:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:11:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:11:58,942 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) [2021-10-13 07:11:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:11:58,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-13 07:11:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:58,944 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:11:58,945 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) [2021-10-13 07:11:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:11:58,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:11:58,948 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:11:58,952 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:11:58,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:11:58,954 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:11:58,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:11:58,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:11:58,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:11:58,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:11:58,998 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-13 07:11:58,998 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:11:58,998 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-13 07:11:58,999 INFO L853 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-13 07:11:58,999 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-13 07:11:59,000 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-13 07:11:59,000 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)) [2021-10-13 07:11:59,001 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2021-10-13 07:11:59,001 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-13 07:11:59,002 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-13 07:11:59,002 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:11:59,002 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-13 07:11:59,002 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-13 07:11:59,003 INFO L857 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-10-13 07:11:59,003 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-13 07:11:59,012 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:11:59,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:11:59 BoogieIcfgContainer [2021-10-13 07:11:59,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:11:59,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:11:59,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:11:59,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:11:59,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:57" (3/4) ... [2021-10-13 07:11:59,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:11:59,051 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-13 07:11:59,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:11:59,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:11:59,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:11:59,104 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:11:59,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:11:59,106 INFO L168 Benchmark]: Toolchain (without parser) took 1921.84 ms. Allocated memory is still 104.9 MB. Free memory was 63.2 MB in the beginning and 77.5 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:59,107 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:59,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.63 ms. Allocated memory is still 104.9 MB. Free memory was 63.0 MB in the beginning and 82.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:59,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.28 ms. Allocated memory is still 104.9 MB. Free memory was 82.6 MB in the beginning and 81.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:59,109 INFO L168 Benchmark]: Boogie Preprocessor took 38.84 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 80.1 MB in the end (delta: 877.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:59,110 INFO L168 Benchmark]: RCFGBuilder took 384.52 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 69.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:59,110 INFO L168 Benchmark]: TraceAbstraction took 1031.39 ms. Allocated memory is still 104.9 MB. Free memory was 68.5 MB in the beginning and 80.1 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:59,111 INFO L168 Benchmark]: Witness Printer took 70.88 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 77.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:59,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.63 ms. Allocated memory is still 104.9 MB. Free memory was 63.0 MB in the beginning and 82.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.28 ms. Allocated memory is still 104.9 MB. Free memory was 82.6 MB in the beginning and 81.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.84 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 80.1 MB in the end (delta: 877.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 384.52 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 69.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1031.39 ms. Allocated memory is still 104.9 MB. Free memory was 68.5 MB in the beginning and 80.1 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.88 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 77.5 MB in the end (delta: 2.6 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: 938.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 254.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 41.9ms, InitialAbstractionConstructionTime: 32.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 25 SDslu, 22 SDs, 0 SdLazy, 40 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.2ms 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: 27.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 18.4ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 15.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 24.0ms SsaConstructionTime, 72.1ms SatisfiabilityAnalysisTime, 226.0ms 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! [2021-10-13 07:11:59,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e2af9ac-6b4a-43f6-8ce0-0f57d480930d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...