./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/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_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c2780d79847d31970febd5cb46fb7efe933c8ec .............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:26:07,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:07,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:07,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:07,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:07,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:07,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:07,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:07,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:07,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:07,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:07,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:07,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:07,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:07,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:07,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:07,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:07,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:07,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:07,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:07,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:07,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:07,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:07,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:07,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:07,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:07,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:07,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:07,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:07,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:07,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:07,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:07,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:07,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:07,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:07,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:07,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:07,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:07,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:07,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:07,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:07,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:07,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:07,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:07,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:07,998 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:07,998 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:07,998 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:07,998 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:07,999 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:07,999 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:07,999 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:07,999 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:08,000 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:08,000 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:08,000 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:08,001 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:08,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:08,002 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:08,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:08,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:08,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:08,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:08,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:08,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:08,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:08,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:08,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:08,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:08,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:08,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:08,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:08,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:08,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:08,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:08,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:08,006 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:08,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:08,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:08,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:08,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:08,007 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_754ad0a5-8b18-4c36-884d-8158aa5b74dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2780d79847d31970febd5cb46fb7efe933c8ec [2021-10-11 02:26:08,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:08,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:08,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:08,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:08,296 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:08,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/recursive/Addition01-2.c [2021-10-11 02:26:08,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/data/4a9b627de/90928cc0433e49b795e7724aeb42d377/FLAG527cf2665 [2021-10-11 02:26:09,021 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:09,022 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/sv-benchmarks/c/recursive/Addition01-2.c [2021-10-11 02:26:09,033 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/data/4a9b627de/90928cc0433e49b795e7724aeb42d377/FLAG527cf2665 [2021-10-11 02:26:09,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/data/4a9b627de/90928cc0433e49b795e7724aeb42d377 [2021-10-11 02:26:09,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:09,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:09,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:09,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:09,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:09,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47898129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09, skipping insertion in model container [2021-10-11 02:26:09,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:09,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:09,673 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-10-11 02:26:09,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:09,701 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:09,720 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-10-11 02:26:09,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:09,736 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:09,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09 WrapperNode [2021-10-11 02:26:09,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:09,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:09,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:09,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:09,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:09,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:09,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:09,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:09,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... [2021-10-11 02:26:09,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:09,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:09,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:09,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:09,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/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 02:26:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-10-11 02:26:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-10-11 02:26:10,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:10,187 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:26:10,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:10 BoogieIcfgContainer [2021-10-11 02:26:10,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:10,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:10,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:10,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:10,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:09" (1/3) ... [2021-10-11 02:26:10,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9bd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:10, skipping insertion in model container [2021-10-11 02:26:10,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:09" (2/3) ... [2021-10-11 02:26:10,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9bd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:10, skipping insertion in model container [2021-10-11 02:26:10,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:10" (3/3) ... [2021-10-11 02:26:10,200 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-10-11 02:26:10,217 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:10,220 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:10,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:10,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:10,279 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:10,280 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:10,280 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:10,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:10,280 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:10,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:10,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-10-11 02:26:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:10,327 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:10,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:10,328 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash 731430453, now seen corresponding path program 1 times [2021-10-11 02:26:10,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:10,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588157799] [2021-10-11 02:26:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:10,795 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 02:26:10,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588157799] [2021-10-11 02:26:10,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:10,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:26:10,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56074825] [2021-10-11 02:26:10,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:10,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:10,818 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2021-10-11 02:26:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:11,039 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-10-11 02:26:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:11,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-10-11 02:26:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:11,051 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:26:11,051 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:26:11,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:26:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-11 02:26:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:26:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-10-11 02:26:11,113 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2021-10-11 02:26:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:11,114 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-10-11 02:26:11,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:11,114 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-10-11 02:26:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:26:11,117 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:11,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:11,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:11,118 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:11,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:11,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1703056242, now seen corresponding path program 1 times [2021-10-11 02:26:11,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:11,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941107764] [2021-10-11 02:26:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:11,311 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 02:26:11,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941107764] [2021-10-11 02:26:11,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:11,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:26:11,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893630584] [2021-10-11 02:26:11,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:26:11,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:11,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:26:11,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:11,320 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 7 states. [2021-10-11 02:26:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:11,465 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-10-11 02:26:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:11,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-10-11 02:26:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:11,470 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:26:11,470 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:26:11,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:26:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:26:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:26:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-11 02:26:11,478 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-10-11 02:26:11,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:11,479 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-11 02:26:11,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:26:11,479 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-11 02:26:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:26:11,481 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:11,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:11,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:11,482 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:11,483 INFO L82 PathProgramCache]: Analyzing trace with hash 280210265, now seen corresponding path program 1 times [2021-10-11 02:26:11,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:11,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841357370] [2021-10-11 02:26:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:11,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841357370] [2021-10-11 02:26:11,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209929064] [2021-10-11 02:26:11,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/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 02:26:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:11,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-11 02:26:11,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:12,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:12,657 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:26:12,663 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:26:12,665 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:26:12,670 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:26:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:12,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [623507015] [2021-10-11 02:26:12,848 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-11 02:26:12,849 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:26:12,860 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:26:12,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:26:12,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2021-10-11 02:26:12,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037324116] [2021-10-11 02:26:12,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-10-11 02:26:12,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:12,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-11 02:26:12,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:26:12,870 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 20 states. [2021-10-11 02:26:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:13,212 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-10-11 02:26:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 02:26:13,212 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 18 [2021-10-11 02:26:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:13,214 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:26:13,215 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:13,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-10-11 02:26:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:13,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:13,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-11 02:26:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:13,219 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:13,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-10-11 02:26:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:13,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:13,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:26:13,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:13,493 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:13,494 INFO L262 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-10-11 02:26:13,494 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:13,494 INFO L265 CegarLoopResult]: At program point L28(lines 28 47) the Hoare annotation is: true [2021-10-11 02:26:13,494 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2021-10-11 02:26:13,495 INFO L262 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2021-10-11 02:26:13,495 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-10-11 02:26:13,495 INFO L258 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (or (= ULTIMATE.start_main_~n~0 0) (< 0 ULTIMATE.start_main_~n~0)) [2021-10-11 02:26:13,495 INFO L262 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2021-10-11 02:26:13,496 INFO L262 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2021-10-11 02:26:13,496 INFO L258 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= addition_~m |addition_#in~m|) (<= addition_~n 0) (= |addition_#in~n| addition_~n) (<= |addition_#in~m| addition_~m) (not (= |addition_#in~n| 0))) [2021-10-11 02:26:13,496 INFO L262 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2021-10-11 02:26:13,499 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-11 02:26:13,500 INFO L262 CegarLoopResult]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2021-10-11 02:26:13,500 INFO L258 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (< 0 addition_~n) (<= addition_~m |addition_#in~m|) (= |addition_#in~n| addition_~n) (<= |addition_#in~m| addition_~m)) [2021-10-11 02:26:13,500 INFO L262 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2021-10-11 02:26:13,500 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-11 02:26:13,501 INFO L262 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-10-11 02:26:13,501 INFO L265 CegarLoopResult]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-10-11 02:26:13,501 INFO L262 CegarLoopResult]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2021-10-11 02:26:13,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:13 BoogieIcfgContainer [2021-10-11 02:26:13,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:13,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:13,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:13,524 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:13,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:10" (3/4) ... [2021-10-11 02:26:13,530 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:13,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2021-10-11 02:26:13,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:26:13,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:26:13,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:13,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:13,589 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754ad0a5-8b18-4c36-884d-8158aa5b74dd/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:13,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:13,592 INFO L168 Benchmark]: Toolchain (without parser) took 4174.89 ms. Allocated memory was 136.3 MB in the beginning and 174.1 MB in the end (delta: 37.7 MB). Free memory was 103.6 MB in the beginning and 130.7 MB in the end (delta: -27.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:13,592 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:13,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.30 ms. Allocated memory is still 136.3 MB. Free memory was 103.2 MB in the beginning and 110.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:13,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.64 ms. Allocated memory is still 136.3 MB. Free memory was 110.9 MB in the beginning and 109.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:13,595 INFO L168 Benchmark]: Boogie Preprocessor took 22.02 ms. Allocated memory is still 136.3 MB. Free memory was 109.5 MB in the beginning and 108.8 MB in the end (delta: 783.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:13,596 INFO L168 Benchmark]: RCFGBuilder took 389.50 ms. Allocated memory is still 136.3 MB. Free memory was 108.8 MB in the beginning and 94.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:13,597 INFO L168 Benchmark]: TraceAbstraction took 3331.27 ms. Allocated memory was 136.3 MB in the beginning and 174.1 MB in the end (delta: 37.7 MB). Free memory was 93.3 MB in the beginning and 132.8 MB in the end (delta: -39.5 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:13,598 INFO L168 Benchmark]: Witness Printer took 66.28 ms. Allocated memory is still 174.1 MB. Free memory was 132.8 MB in the beginning and 130.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:13,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.30 ms. Allocated memory is still 136.3 MB. Free memory was 103.2 MB in the beginning and 110.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.64 ms. Allocated memory is still 136.3 MB. Free memory was 110.9 MB in the beginning and 109.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.02 ms. Allocated memory is still 136.3 MB. Free memory was 109.5 MB in the beginning and 108.8 MB in the end (delta: 783.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.50 ms. Allocated memory is still 136.3 MB. Free memory was 108.8 MB in the beginning and 94.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3331.27 ms. Allocated memory was 136.3 MB in the beginning and 174.1 MB in the end (delta: 37.7 MB). Free memory was 93.3 MB in the beginning and 132.8 MB in the end (delta: -39.5 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. * Witness Printer took 66.28 ms. Allocated memory is still 174.1 MB. Free memory was 132.8 MB in the beginning and 130.7 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: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 47 SDslu, 101 SDs, 0 SdLazy, 218 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 8352 SizeOfPredicates, 9 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...