./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.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_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c -s /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/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 05602efd0716c9bc46b30aae12cb2e2448644d24 ......................................................................................................................................................................................................................................................................................................................................................................... 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 13:05:05,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:05,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:05,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:05,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:05,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:05,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:05,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:05,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:05,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:05,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:05,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:05,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:05,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:05,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:05,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:05,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:05,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:05,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:05,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:05,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:05,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:05,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:05,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:05,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:05,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:05,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:05,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:05,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:05,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:05,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:05,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:05,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:05,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:05,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:05,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:05,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:05,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:05,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:05,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:05,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:05,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 13:05:05,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:05,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:05,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:05,515 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:05,515 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:05,515 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:05,515 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:05,515 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:05,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:05,516 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:05,517 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:05,517 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:05,517 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:05,517 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:05,517 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:05,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:05,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:05:05,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:05,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:05,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:05,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:05,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:05,519 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 13:05:05,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:05,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:05,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:05,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:05,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:05,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:05,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:05,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:05,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:05,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:05,523 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:05,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:05,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:05,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:05,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:05,524 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_71647c51-3afa-4423-b186-384cea104902/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05602efd0716c9bc46b30aae12cb2e2448644d24 [2020-11-22 13:05:05,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:05,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:05,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:05,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:05,884 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:05,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-11-22 13:05:05,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/data/48d0505ec/503717c080e14a37b4679f1f6b3ce8b1/FLAGea5d27d17 [2020-11-22 13:05:06,518 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:06,518 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-11-22 13:05:06,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/data/48d0505ec/503717c080e14a37b4679f1f6b3ce8b1/FLAGea5d27d17 [2020-11-22 13:05:06,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/data/48d0505ec/503717c080e14a37b4679f1f6b3ce8b1 [2020-11-22 13:05:06,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:06,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:06,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:06,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:06,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:06,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:06" (1/1) ... [2020-11-22 13:05:06,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6957a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:06, skipping insertion in model container [2020-11-22 13:05:06,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:06" (1/1) ... [2020-11-22 13:05:06,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:06,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:07,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:07,113 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:07,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:07,152 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:07,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07 WrapperNode [2020-11-22 13:05:07,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:07,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:07,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:07,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:07,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:07,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:07,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:07,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:07,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... [2020-11-22 13:05:07,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:07,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:07,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:07,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:07,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/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 13:05:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:07,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:07,572 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:07,572 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-22 13:05:07,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:07 BoogieIcfgContainer [2020-11-22 13:05:07,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:07,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:07,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:07,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:07,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:06" (1/3) ... [2020-11-22 13:05:07,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e073eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:07, skipping insertion in model container [2020-11-22 13:05:07,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:07" (2/3) ... [2020-11-22 13:05:07,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e073eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:07, skipping insertion in model container [2020-11-22 13:05:07,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:07" (3/3) ... [2020-11-22 13:05:07,582 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.01.c [2020-11-22 13:05:07,593 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:07,597 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:05:07,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:05:07,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:07,634 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:07,634 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:07,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:07,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:07,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:07,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:07,635 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-22 13:05:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 13:05:07,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:07,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 13:05:07,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:07,663 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-22 13:05:07,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:07,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848187034] [2020-11-22 13:05:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:07,855 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 13:05:07,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848187034] [2020-11-22 13:05:07,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:07,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:07,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749986679] [2020-11-22 13:05:07,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:07,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:07,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:07,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:07,885 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2020-11-22 13:05:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:08,025 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-22 13:05:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:08,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-22 13:05:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:08,037 INFO L225 Difference]: With dead ends: 13 [2020-11-22 13:05:08,037 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 13:05:08,042 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 13:05:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 13:05:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2020-11-22 13:05:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:05:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:05:08,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2020-11-22 13:05:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:08,088 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:05:08,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:05:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:05:08,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:08,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:05:08,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:08,089 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:08,090 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-22 13:05:08,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:08,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733401307] [2020-11-22 13:05:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:08,130 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 13:05:08,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733401307] [2020-11-22 13:05:08,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:08,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:05:08,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481546578] [2020-11-22 13:05:08,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:08,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:08,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:08,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:08,133 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2020-11-22 13:05:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:08,163 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-22 13:05:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:08,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-22 13:05:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:08,164 INFO L225 Difference]: With dead ends: 8 [2020-11-22 13:05:08,165 INFO L226 Difference]: Without dead ends: 7 [2020-11-22 13:05:08,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:05:08,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-22 13:05:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-22 13:05:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-22 13:05:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-22 13:05:08,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2020-11-22 13:05:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:08,168 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-22 13:05:08,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-22 13:05:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:05:08,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:08,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-22 13:05:08,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:08,169 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:05:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:08,170 INFO L82 PathProgramCache]: Analyzing trace with hash 925739309, now seen corresponding path program 1 times [2020-11-22 13:05:08,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:08,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152146804] [2020-11-22 13:05:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152146804] [2020-11-22 13:05:08,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649397921] [2020-11-22 13:05:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/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 13:05:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:08,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:05:08,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1324757698] [2020-11-22 13:05:08,421 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-11-22 13:05:08,421 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:05:08,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:05:08,436 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:05:08,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:05:08,503 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:05:08,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:05:08,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3, 3] total 5 [2020-11-22 13:05:08,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026665389] [2020-11-22 13:05:08,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:08,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:08,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:08,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:08,646 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2020-11-22 13:05:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:08,670 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2020-11-22 13:05:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:08,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:05:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:08,672 INFO L225 Difference]: With dead ends: 7 [2020-11-22 13:05:08,672 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:08,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:08,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:08,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-22 13:05:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:08,674 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:08,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:08,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:08,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 13:05:08,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:08,941 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-22 13:05:08,941 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:08,941 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-22 13:05:08,941 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:08,941 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-22 13:05:08,941 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-22 13:05:08,942 INFO L270 CegarLoopResult]: At program point L27-2(lines 27 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~z~0 2147483648)) (<= 0 (+ ULTIMATE.start_main_~y~0 2147483648)) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= ULTIMATE.start_main_~z~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-22 13:05:08,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:08 BoogieIcfgContainer [2020-11-22 13:05:08,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:08,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:08,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:08,967 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:08,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:07" (3/4) ... [2020-11-22 13:05:08,971 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:08,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:05:08,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:05:08,983 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:09,027 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_71647c51-3afa-4423-b186-384cea104902/bin/utaipan/witness.graphml [2020-11-22 13:05:09,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:09,029 INFO L168 Benchmark]: Toolchain (without parser) took 2130.82 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.0 MB in the beginning and 74.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,029 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 73.0 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:09,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.86 ms. Allocated memory is still 96.5 MB. Free memory was 62.8 MB in the beginning and 74.5 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 73.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:09,031 INFO L168 Benchmark]: Boogie Preprocessor took 25.77 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.4 MB in the end (delta: 914.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:09,031 INFO L168 Benchmark]: RCFGBuilder took 356.60 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 62.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,032 INFO L168 Benchmark]: TraceAbstraction took 1390.43 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.0 MB in the beginning and 76.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,032 INFO L168 Benchmark]: Witness Printer took 60.54 ms. Allocated memory is still 117.4 MB. Free memory was 76.4 MB in the beginning and 74.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:09,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 73.0 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.86 ms. Allocated memory is still 96.5 MB. Free memory was 62.8 MB in the beginning and 74.5 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 73.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.77 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.4 MB in the end (delta: 914.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 356.60 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 62.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1390.43 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.0 MB in the beginning and 76.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Witness Printer took 60.54 ms. Allocated memory is still 117.4 MB. Free memory was 76.4 MB in the beginning and 74.3 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: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: 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: 27]: Loop Invariant Derived loop invariant: ((((x <= 2147483647 && 0 <= z + 2147483648) && 0 <= y + 2147483648) && 0 <= x + 2147483648) && z <= 2147483647) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 10 SDslu, 2 SDs, 0 SdLazy, 23 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 25 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 SizeOfPredicates, 3 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 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]: 83, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 3, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 7, TOOLS_POST_TIME[ms]: 20, 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: 7, TOOLS_QUANTIFIERELIM_TIME[ms]: 17, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 14, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 16, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, 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]: 3, DOMAIN_ISBOTTOM_APPLICATIONS: 3, DOMAIN_ISBOTTOM_TIME[ms]: 10, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 21, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 20, 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]: 3, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 28, DAG_COMPRESSION_RETAINED_NODES: 18, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...