./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore_v4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore_v4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan --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 64bit --witnessprinter.graph.data.programhash 9382426e0298eea8efda3bbcf0c2ed9d078bc5a4 .............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:55:47,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:55:47,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:55:47,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:55:47,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:55:47,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:55:47,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:55:47,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:55:47,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:55:47,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:55:47,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:55:47,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:55:47,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:55:47,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:55:47,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:55:47,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:55:47,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:55:47,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:55:47,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:55:47,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:55:47,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:55:47,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:55:47,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:55:47,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:55:47,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:55:47,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:55:47,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:55:47,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:55:47,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:55:47,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:55:47,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:55:47,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:55:47,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:55:47,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:55:47,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:55:47,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:55:47,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:55:47,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:55:47,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:55:47,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:55:47,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:55:47,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:55:47,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:55:47,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:55:47,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:55:47,684 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:55:47,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:55:47,685 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:55:47,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:55:47,686 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:55:47,686 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:55:47,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:55:47,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:55:47,688 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:55:47,690 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:55:47,690 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:55:47,691 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:55:47,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:55:47,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:55:47,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:55:47,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:55:47,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:55:47,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:55:47,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:55:47,695 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:55:47,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:55:47,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:55:47,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:55:47,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:55:47,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:55:47,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:55:47,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:55:47,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:55:47,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:55:47,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:55:47,702 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:55:47,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:55:47,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:55:47,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:55:47,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:55:47,706 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9382426e0298eea8efda3bbcf0c2ed9d078bc5a4 [2020-11-22 12:55:48,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:55:48,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:55:48,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:55:48,173 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:55:48,174 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:55:48,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Bangalore_v4.c [2020-11-22 12:55:48,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/data/117a15d7b/b0195538441e481e8ecedf2d920b5632/FLAG42908f48c [2020-11-22 12:55:48,882 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:55:48,883 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/sv-benchmarks/c/termination-crafted/Bangalore_v4.c [2020-11-22 12:55:48,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/data/117a15d7b/b0195538441e481e8ecedf2d920b5632/FLAG42908f48c [2020-11-22 12:55:49,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/data/117a15d7b/b0195538441e481e8ecedf2d920b5632 [2020-11-22 12:55:49,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:55:49,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:55:49,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:49,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:55:49,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:55:49,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84109a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49, skipping insertion in model container [2020-11-22 12:55:49,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:55:49,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:55:49,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:49,502 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:55:49,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:49,542 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:55:49,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49 WrapperNode [2020-11-22 12:55:49,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:49,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:49,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:55:49,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:55:49,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:49,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:55:49,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:55:49,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:55:49,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... [2020-11-22 12:55:49,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:55:49,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:55:49,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:55:49,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:55:49,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:55:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:55:49,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:55:50,028 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:55:50,028 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-22 12:55:50,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:50 BoogieIcfgContainer [2020-11-22 12:55:50,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:55:50,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:55:50,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:55:50,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:55:50,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:55:49" (1/3) ... [2020-11-22 12:55:50,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1933d7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:50, skipping insertion in model container [2020-11-22 12:55:50,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:49" (2/3) ... [2020-11-22 12:55:50,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1933d7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:50, skipping insertion in model container [2020-11-22 12:55:50,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:50" (3/3) ... [2020-11-22 12:55:50,047 INFO L111 eAbstractionObserver]: Analyzing ICFG Bangalore_v4.c [2020-11-22 12:55:50,081 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:55:50,086 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 12:55:50,102 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 12:55:50,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:55:50,129 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:55:50,129 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:55:50,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:55:50,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:55:50,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:55:50,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:55:50,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:55:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-22 12:55:50,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:55:50,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:50,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:55:50,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:55:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:50,163 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2020-11-22 12:55:50,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:50,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145350785] [2020-11-22 12:55:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:50,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145350785] [2020-11-22 12:55:50,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:50,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:50,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675424909] [2020-11-22 12:55:50,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:50,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:50,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:50,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:50,396 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-22 12:55:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:50,485 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-22 12:55:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:50,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-22 12:55:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:50,497 INFO L225 Difference]: With dead ends: 15 [2020-11-22 12:55:50,497 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:55:50,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:55:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-22 12:55:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 12:55:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 12:55:50,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2020-11-22 12:55:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:50,549 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 12:55:50,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:50,549 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 12:55:50,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:55:50,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:50,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:55:50,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:55:50,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:55:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:50,554 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2020-11-22 12:55:50,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:50,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866935103] [2020-11-22 12:55:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:50,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866935103] [2020-11-22 12:55:50,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:50,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:50,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294465007] [2020-11-22 12:55:50,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:50,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:50,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:50,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:50,641 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-22 12:55:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:50,700 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-22 12:55:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:50,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 12:55:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:50,702 INFO L225 Difference]: With dead ends: 9 [2020-11-22 12:55:50,702 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 12:55:50,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:50,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 12:55:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 12:55:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 12:55:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 12:55:50,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-11-22 12:55:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:50,707 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 12:55:50,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 12:55:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:55:50,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:50,710 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-22 12:55:50,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:55:50,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:55:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:50,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2020-11-22 12:55:50,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:50,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992993660] [2020-11-22 12:55:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:50,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992993660] [2020-11-22 12:55:50,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967547329] [2020-11-22 12:55:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:55:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:50,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:55:50,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:55:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:50,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:55:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:50,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134710128] [2020-11-22 12:55:51,027 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 12:55:51,028 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:55:51,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:55:51,039 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:55:51,039 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:55:51,208 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:55:51,476 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 10 [2020-11-22 12:55:51,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:55:51,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 9 [2020-11-22 12:55:51,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093308590] [2020-11-22 12:55:51,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:55:51,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:51,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:55:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:55:51,683 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-22 12:55:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:51,712 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-22 12:55:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:51,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 12:55:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:51,714 INFO L225 Difference]: With dead ends: 8 [2020-11-22 12:55:51,714 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:55:51,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:55:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:55:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:55:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:55:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:55:51,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 12:55:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:51,716 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:55:51,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:55:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:55:51,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:55:51,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 12:55:51,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:55:51,966 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-22 12:55:51,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:55:51,967 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (and (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= ULTIMATE.start_main_~y~0 2147483647) (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) [2020-11-22 12:55:51,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-22 12:55:51,967 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:55:51,967 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-22 12:55:51,967 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-22 12:55:51,967 INFO L274 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-11-22 12:55:51,968 INFO L277 CegarLoopResult]: At program point L16-1(lines 16 20) the Hoare annotation is: true [2020-11-22 12:55:51,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:55:51 BoogieIcfgContainer [2020-11-22 12:55:51,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:55:51,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:55:51,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:55:51,986 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:55:51,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:50" (3/4) ... [2020-11-22 12:55:51,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:55:52,000 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 12:55:52,000 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:55:52,001 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:52,038 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_533bbbde-58d6-4863-93ca-79cd1827190b/bin/utaipan/witness.graphml [2020-11-22 12:55:52,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:55:52,039 INFO L168 Benchmark]: Toolchain (without parser) took 2788.51 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 69.2 MB in the beginning and 65.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:52,040 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:52,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.30 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 68.9 MB in the beginning and 95.4 MB in the end (delta: -26.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:52,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 117.4 MB. Free memory was 95.4 MB in the beginning and 94.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:52,042 INFO L168 Benchmark]: Boogie Preprocessor took 29.64 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 93.4 MB in the end (delta: 899.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:52,043 INFO L168 Benchmark]: RCFGBuilder took 401.83 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 83.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:52,044 INFO L168 Benchmark]: TraceAbstraction took 1952.50 ms. Allocated memory is still 117.4 MB. Free memory was 83.5 MB in the beginning and 67.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:52,045 INFO L168 Benchmark]: Witness Printer took 52.10 ms. Allocated memory is still 117.4 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:52,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.30 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 68.9 MB in the beginning and 95.4 MB in the end (delta: -26.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.03 ms. Allocated memory is still 117.4 MB. Free memory was 95.4 MB in the beginning and 94.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.64 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 93.4 MB in the end (delta: 899.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 401.83 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 83.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1952.50 ms. Allocated memory is still 117.4 MB. Free memory was 83.5 MB in the beginning and 67.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Witness Printer took 52.10 ms. Allocated memory is still 117.4 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (0 <= x + 2147483648 && y <= 2147483647) && x < y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 13 SDslu, 1 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 4 NumberOfNonLiveVariables, 18 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 181, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME[ms]: 14, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 9, TOOLS_QUANTIFIERELIM_TIME[ms]: 9, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 3, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 19, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME[ms]: 99, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 7, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 14, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 13, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 13, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 40, DAG_COMPRESSION_RETAINED_NODES: 21, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...