./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan --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-a4ecdab [2020-11-28 07:37:41,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:41,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:41,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:41,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:41,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:41,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:41,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:41,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:41,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:41,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:41,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:41,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:41,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:41,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:41,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:41,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:41,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:41,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:41,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:41,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:41,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:41,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:41,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:41,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:41,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:41,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:41,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:41,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:41,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:41,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:41,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:41,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:41,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:41,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:41,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:41,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:41,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:41,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:41,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:41,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:41,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:41,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:41,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:41,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:41,957 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:41,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:41,957 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:41,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:41,958 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:41,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:41,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:41,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:41,960 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:41,960 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:41,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:41,961 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:41,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:41,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:41,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:41,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:41,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:41,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:41,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:41,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:41,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:41,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:41,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:41,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:41,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:41,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:41,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:41,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:41,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:41,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:41,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:41,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:41,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:41,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:41,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:41,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:41,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:41,969 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2780d79847d31970febd5cb46fb7efe933c8ec [2020-11-28 07:37:42,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:42,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:42,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:42,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:42,295 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:42,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/../../sv-benchmarks/c/recursive/Addition01-2.c [2020-11-28 07:37:42,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/data/31c4f07f4/7252c5e6482849e9bf0d295d85bc5bb4/FLAG063aacfef [2020-11-28 07:37:42,849 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:42,849 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/sv-benchmarks/c/recursive/Addition01-2.c [2020-11-28 07:37:42,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/data/31c4f07f4/7252c5e6482849e9bf0d295d85bc5bb4/FLAG063aacfef [2020-11-28 07:37:43,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/data/31c4f07f4/7252c5e6482849e9bf0d295d85bc5bb4 [2020-11-28 07:37:43,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:43,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:43,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:43,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:43,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:43,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6f9912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43, skipping insertion in model container [2020-11-28 07:37:43,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:43,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:43,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:43,511 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:43,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:43,551 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:43,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43 WrapperNode [2020-11-28 07:37:43,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:43,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:43,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:43,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:43,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:43,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:43,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:43,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:43,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:43,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:43,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:43,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:43,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:43,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-11-28 07:37:43,675 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-11-28 07:37:44,135 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:44,135 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:37:44,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:44 BoogieIcfgContainer [2020-11-28 07:37:44,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:44,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:44,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:44,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:44,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:43" (1/3) ... [2020-11-28 07:37:44,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579d51d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:44, skipping insertion in model container [2020-11-28 07:37:44,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43" (2/3) ... [2020-11-28 07:37:44,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579d51d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:44, skipping insertion in model container [2020-11-28 07:37:44,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:44" (3/3) ... [2020-11-28 07:37:44,147 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-11-28 07:37:44,157 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:44,162 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:44,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:37:44,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:44,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:44,208 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:44,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:44,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:44,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:44,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:44,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-28 07:37:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:37:44,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:44,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:44,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:44,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1837646603, now seen corresponding path program 1 times [2020-11-28 07:37:44,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:44,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727350341] [2020-11-28 07:37:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:44,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727350341] [2020-11-28 07:37:44,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:44,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:37:44,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574639611] [2020-11-28 07:37:44,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:37:44,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:44,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:37:44,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:44,709 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-11-28 07:37:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:44,916 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-11-28 07:37:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:44,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:37:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:44,934 INFO L225 Difference]: With dead ends: 30 [2020-11-28 07:37:44,935 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 07:37:44,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:44,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 07:37:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 07:37:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 07:37:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-11-28 07:37:44,985 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2020-11-28 07:37:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:44,986 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-11-28 07:37:44,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:37:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-11-28 07:37:44,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:37:44,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:44,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:44,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:44,988 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:44,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:44,988 INFO L82 PathProgramCache]: Analyzing trace with hash -978005234, now seen corresponding path program 1 times [2020-11-28 07:37:44,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:44,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730805217] [2020-11-28 07:37:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:45,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730805217] [2020-11-28 07:37:45,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:45,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:37:45,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197429006] [2020-11-28 07:37:45,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:37:45,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:45,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:37:45,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:45,095 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 6 states. [2020-11-28 07:37:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:45,211 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2020-11-28 07:37:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:37:45,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:37:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:45,213 INFO L225 Difference]: With dead ends: 31 [2020-11-28 07:37:45,213 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:37:45,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:37:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:37:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 07:37:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 07:37:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 07:37:45,219 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-11-28 07:37:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:45,219 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 07:37:45,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:37:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 07:37:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:37:45,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:45,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:45,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:45,226 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:45,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:45,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1974332951, now seen corresponding path program 1 times [2020-11-28 07:37:45,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:45,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712722842] [2020-11-28 07:37:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:37:45,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712722842] [2020-11-28 07:37:45,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488371465] [2020-11-28 07:37:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:45,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-28 07:37:45,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:37:45,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:46,127 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:46,133 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:46,135 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:46,144 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:37:46,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976327614] [2020-11-28 07:37:46,292 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-11-28 07:37:46,292 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:37:46,297 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:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) 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) [2020-11-28 07:37:46,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:37:46,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2020-11-28 07:37:46,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274353493] [2020-11-28 07:37:46,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-28 07:37:46,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:46,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-28 07:37:46,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-11-28 07:37:46,303 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 20 states. [2020-11-28 07:37:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:46,596 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-11-28 07:37:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:37:46,596 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 18 [2020-11-28 07:37:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:46,597 INFO L225 Difference]: With dead ends: 22 [2020-11-28 07:37:46,597 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:37:46,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-11-28 07:37:46,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:37:46,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:37:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:37:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:37:46,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 07:37:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:46,599 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:37:46,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-28 07:37:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:37:46,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:37:46,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:37:46,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:37:46,929 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:37:46,929 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-28 07:37:46,930 INFO L274 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2020-11-28 07:37:46,930 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-11-28 07:37:46,930 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:37:46,930 INFO L277 CegarLoopResult]: At program point L28(lines 28 47) the Hoare annotation is: true [2020-11-28 07:37:46,930 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:37:46,930 INFO L274 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-11-28 07:37:46,931 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (or (= ULTIMATE.start_main_~n~0 0) (< 0 ULTIMATE.start_main_~n~0)) [2020-11-28 07:37:46,931 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-11-28 07:37:46,931 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= addition_~m |addition_#in~m|) (= |addition_#in~n| addition_~n) (<= |addition_#in~n| 0) (<= |addition_#in~m| addition_~m) (not (= |addition_#in~n| 0))) [2020-11-28 07:37:46,931 INFO L274 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-11-28 07:37:46,931 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-28 07:37:46,931 INFO L274 CegarLoopResult]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2020-11-28 07:37:46,931 INFO L270 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)) [2020-11-28 07:37:46,932 INFO L274 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-11-28 07:37:46,932 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-28 07:37:46,932 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-11-28 07:37:46,932 INFO L277 CegarLoopResult]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2020-11-28 07:37:46,932 INFO L274 CegarLoopResult]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2020-11-28 07:37:46,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:46 BoogieIcfgContainer [2020-11-28 07:37:46,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:46,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:46,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:46,942 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:46,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:44" (3/4) ... [2020-11-28 07:37:46,945 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:46,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2020-11-28 07:37:46,955 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:37:46,955 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:37:46,955 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:46,956 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:46,994 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5d313fb7-386d-4222-a996-af42725ed7d5/bin/utaipan/witness.graphml [2020-11-28 07:37:46,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:46,996 INFO L168 Benchmark]: Toolchain (without parser) took 3736.28 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 54.3 MB in the beginning and 39.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:46,997 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:46,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.00 ms. Allocated memory is still 86.0 MB. Free memory was 54.2 MB in the beginning and 64.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:46,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 86.0 MB. Free memory was 64.9 MB in the beginning and 63.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:46,999 INFO L168 Benchmark]: Boogie Preprocessor took 19.45 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 62.6 MB in the end (delta: 919.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:46,999 INFO L168 Benchmark]: RCFGBuilder took 531.04 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 48.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:47,006 INFO L168 Benchmark]: TraceAbstraction took 2801.70 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 47.9 MB in the beginning and 42.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:47,006 INFO L168 Benchmark]: Witness Printer took 53.51 ms. Allocated memory is still 111.1 MB. Free memory was 42.8 MB in the beginning and 39.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:47,009 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 86.0 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.00 ms. Allocated memory is still 86.0 MB. Free memory was 54.2 MB in the beginning and 64.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 86.0 MB. Free memory was 64.9 MB in the beginning and 63.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.45 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 62.6 MB in the end (delta: 919.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 531.04 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 48.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2801.70 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 47.9 MB in the beginning and 42.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. * Witness Printer took 53.51 ms. Allocated memory is still 111.1 MB. Free memory was 42.8 MB in the beginning and 39.8 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: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() 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: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 46 SDslu, 95 SDs, 0 SdLazy, 200 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s 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, 1.3s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 8316 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...