./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI --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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:57,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:57,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:57,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:57,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:57,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:57,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:57,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:57,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:57,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:57,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:57,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:57,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:57,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:57,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:57,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:57,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:57,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:57,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:57,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:57,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:57,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:57,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:57,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:57,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:57,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:57,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:57,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:57,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:57,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:57,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:57,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:57,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:57,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:57,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:57,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:57,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:57,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:57,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:57,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:57,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:57,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:27:57,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:57,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:57,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:57,488 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:57,488 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:57,488 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:57,489 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:57,489 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:57,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:57,489 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:57,489 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:57,489 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:57,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:57,490 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:57,490 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:57,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:57,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:57,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:57,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:57,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:57,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:57,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:57,492 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:27:57,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:57,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:57,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:57,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:57,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:57,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:57,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:57,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:57,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:57,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:57,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:57,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:57,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:57,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:57,495 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2021-10-11 02:27:57,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:57,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:57,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:57,805 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:57,805 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:57,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2021-10-11 02:27:57,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/data/c5d48b9c6/ad7a112a194b4f8ebb8059898bebca86/FLAG88c348217 [2021-10-11 02:27:58,348 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:58,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2021-10-11 02:27:58,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/data/c5d48b9c6/ad7a112a194b4f8ebb8059898bebca86/FLAG88c348217 [2021-10-11 02:27:58,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/data/c5d48b9c6/ad7a112a194b4f8ebb8059898bebca86 [2021-10-11 02:27:58,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:58,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:58,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:58,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:58,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:58,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:58" (1/1) ... [2021-10-11 02:27:58,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5d1cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:58, skipping insertion in model container [2021-10-11 02:27:58,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:58" (1/1) ... [2021-10-11 02:27:58,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:58,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:58,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:58,961 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:59,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:59,011 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:59,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59 WrapperNode [2021-10-11 02:27:59,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:59,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:59,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:59,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:59,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:59,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:59,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:59,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:59,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... [2021-10-11 02:27:59,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:59,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:59,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:59,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:59,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:59,316 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:59,316 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:27:59,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:59 BoogieIcfgContainer [2021-10-11 02:27:59,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:59,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:59,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:59,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:59,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:58" (1/3) ... [2021-10-11 02:27:59,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e490867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:59, skipping insertion in model container [2021-10-11 02:27:59,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:59" (2/3) ... [2021-10-11 02:27:59,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e490867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:59, skipping insertion in model container [2021-10-11 02:27:59,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:59" (3/3) ... [2021-10-11 02:27:59,339 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2021-10-11 02:27:59,355 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:59,358 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:27:59,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:27:59,393 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:59,393 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:59,394 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:59,394 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:59,394 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:59,394 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:59,394 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:59,394 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-10-11 02:27:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:59,415 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:59,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:59,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:59,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:59,433 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2021-10-11 02:27:59,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:59,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206490599] [2021-10-11 02:27:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:59,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206490599] [2021-10-11 02:27:59,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:59,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:59,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399293493] [2021-10-11 02:27:59,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:59,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:59,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:59,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:59,648 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2021-10-11 02:27:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:59,740 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-11 02:27:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:59,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:27:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:59,750 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:27:59,751 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:27:59,753 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 [2021-10-11 02:27:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:27:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:27:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:27:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-11 02:27:59,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-10-11 02:27:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:59,786 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-11 02:27:59,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-11 02:27:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:59,787 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:59,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:59,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:59,787 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:59,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:59,789 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-10-11 02:27:59,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:59,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056096421] [2021-10-11 02:27:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:59,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056096421] [2021-10-11 02:27:59,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:59,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:59,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478032761] [2021-10-11 02:27:59,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:59,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:59,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:59,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:59,828 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2021-10-11 02:27:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:59,879 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-11 02:27:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:59,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:27:59,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:59,881 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:27:59,882 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:27:59,883 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 [2021-10-11 02:27:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:27:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:27:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:27:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-11 02:27:59,887 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-10-11 02:27:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:59,888 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-11 02:27:59,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-11 02:27:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:59,889 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:59,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-11 02:27:59,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:59,890 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:59,891 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2021-10-11 02:27:59,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:59,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229355593] [2021-10-11 02:27:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:59,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229355593] [2021-10-11 02:27:59,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263109728] [2021-10-11 02:27:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:27:59,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:28:00,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2021-10-11 02:28:00,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476044623] [2021-10-11 02:28:00,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:00,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:00,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:00,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:00,131 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2021-10-11 02:28:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:00,198 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-11 02:28:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:00,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:28:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:00,200 INFO L225 Difference]: With dead ends: 32 [2021-10-11 02:28:00,200 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:28:00,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:28:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-10-11 02:28:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:28:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-10-11 02:28:00,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2021-10-11 02:28:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:00,206 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-10-11 02:28:00,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-10-11 02:28:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:00,207 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:00,208 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:00,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:28:00,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:28:00,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:00,422 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2021-10-11 02:28:00,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:00,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11980342] [2021-10-11 02:28:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11980342] [2021-10-11 02:28:00,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735326416] [2021-10-11 02:28:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:28:00,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1572607333] [2021-10-11 02:28:00,669 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:28:00,669 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:28:00,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:28:00,680 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:28:00,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:28:00,729 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:28:00,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:28:00,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2021-10-11 02:28:00,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834383985] [2021-10-11 02:28:00,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:28:00,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:00,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:28:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:28:00,929 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 7 states. [2021-10-11 02:28:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:00,954 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-11 02:28:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:00,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2021-10-11 02:28:00,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:00,955 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:28:00,956 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:00,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:28:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:00,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-11 02:28:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:00,957 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:00,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:28:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:00,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:01,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:01,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:01,213 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-11 02:28:01,214 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:01,214 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:28:01,214 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-11 02:28:01,214 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-11 02:28:01,214 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 02:28:01,215 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-11 02:28:01,215 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-11 02:28:01,215 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:28:01,215 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:01,215 INFO L262 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2021-10-11 02:28:01,216 INFO L262 CegarLoopResult]: For program point L20(lines 20 28) no Hoare annotation was computed. [2021-10-11 02:28:01,216 INFO L258 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~y2~0) (<= ULTIMATE.start_main_~y2~0 2147483647) (<= ULTIMATE.start_main_~y1~0 2147483647) (<= 0 ULTIMATE.start_main_~y1~0)) [2021-10-11 02:28:01,216 INFO L258 CegarLoopResult]: At program point L20-1(lines 20 28) the Hoare annotation is: (<= ULTIMATE.start_main_~y1~0 2147483647) [2021-10-11 02:28:01,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:01 BoogieIcfgContainer [2021-10-11 02:28:01,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:01,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:01,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:01,234 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:01,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:59" (3/4) ... [2021-10-11 02:28:01,238 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:01,248 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:28:01,248 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:28:01,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:28:01,284 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063eae32-ebc2-45e0-a28d-1f5b8857cc52/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:01,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:01,286 INFO L168 Benchmark]: Toolchain (without parser) took 2556.92 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 79.6 MB in the beginning and 99.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:01,286 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 95.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:01,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.35 ms. Allocated memory is still 117.4 MB. Free memory was 79.4 MB in the beginning and 94.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:01,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.89 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:01,288 INFO L168 Benchmark]: Boogie Preprocessor took 17.07 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 91.9 MB in the end (delta: 961.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:01,289 INFO L168 Benchmark]: RCFGBuilder took 266.98 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 81.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:01,289 INFO L168 Benchmark]: TraceAbstraction took 1907.59 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 80.4 MB in the beginning and 102.9 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:01,290 INFO L168 Benchmark]: Witness Printer took 50.33 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 99.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:01,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 95.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.35 ms. Allocated memory is still 117.4 MB. Free memory was 79.4 MB in the beginning and 94.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.89 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.07 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 91.9 MB in the end (delta: 961.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 266.98 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 81.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1907.59 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 80.4 MB in the beginning and 102.9 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Witness Printer took 50.33 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 99.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: y1 <= 2147483647 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((0 <= y2 && y2 <= 2147483647) && y1 <= 2147483647) && 0 <= y1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 75 SDslu, 1 SDs, 0 SdLazy, 97 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, 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, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2448 SizeOfPredicates, 2 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 3/15 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]: 60, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 11, TOOLS_POST_TIME[ms]: 10, 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: 11, TOOLS_QUANTIFIERELIM_TIME[ms]: 7, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 3, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 23, 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]: 2, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME[ms]: 5, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 9, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 9, 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]: 2, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 49, DAG_COMPRESSION_RETAINED_NODES: 25, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...