./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_step2-3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_step2-3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a03b979f45aa8ba48949293cad74f586aed4b0e9 ................................................................................................................................................................................................................................. 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 07:41:30,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:30,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:30,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:30,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:30,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:30,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:30,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:30,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:30,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:30,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:30,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:30,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:30,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:30,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:30,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:30,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:30,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:30,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:30,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:30,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:30,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:30,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:30,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:30,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:30,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:30,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:30,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:30,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:30,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:30,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:30,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:30,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:30,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:30,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:30,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:30,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:30,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:30,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:30,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:30,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:30,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:41:30,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:30,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:30,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:30,279 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:30,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:30,279 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:30,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:30,280 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:30,280 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:30,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:30,281 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:30,281 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:30,281 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:30,281 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:30,282 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:30,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:30,282 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:41:30,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:30,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:30,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:41:30,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:30,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:41:30,283 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:41:30,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:41:30,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:30,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:41:30,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:30,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:30,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:30,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:30,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:30,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:30,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:41:30,286 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:30,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:30,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:41:30,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:30,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:30,287 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_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a03b979f45aa8ba48949293cad74f586aed4b0e9 [2020-11-28 07:41:30,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:30,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:30,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:30,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:30,564 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:30,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Cairo_step2-3.c [2020-11-28 07:41:30,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/data/efacf512f/fa95bd00abc547e4a460cf4426713ad9/FLAGf17e3b8ed [2020-11-28 07:41:31,135 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:31,136 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/sv-benchmarks/c/termination-crafted/Cairo_step2-3.c [2020-11-28 07:41:31,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/data/efacf512f/fa95bd00abc547e4a460cf4426713ad9/FLAGf17e3b8ed [2020-11-28 07:41:31,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/data/efacf512f/fa95bd00abc547e4a460cf4426713ad9 [2020-11-28 07:41:31,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:31,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:31,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:31,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:31,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:31,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bffbad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31, skipping insertion in model container [2020-11-28 07:41:31,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:31,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:31,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:31,667 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:31,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:31,723 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:31,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31 WrapperNode [2020-11-28 07:41:31,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:31,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:31,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:31,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:31,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:31,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:31,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:31,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:31,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... [2020-11-28 07:41:31,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:31,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:31,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:31,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:31,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/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 07:41:31,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:32,007 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:32,008 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 07:41:32,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:32 BoogieIcfgContainer [2020-11-28 07:41:32,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:32,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:32,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:32,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:32,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:31" (1/3) ... [2020-11-28 07:41:32,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69784aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:32, skipping insertion in model container [2020-11-28 07:41:32,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:31" (2/3) ... [2020-11-28 07:41:32,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69784aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:32, skipping insertion in model container [2020-11-28 07:41:32,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:32" (3/3) ... [2020-11-28 07:41:32,019 INFO L111 eAbstractionObserver]: Analyzing ICFG Cairo_step2-3.c [2020-11-28 07:41:32,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:32,034 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-11-28 07:41:32,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-11-28 07:41:32,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:32,090 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:32,090 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:32,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:32,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:32,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:32,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:32,091 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-11-28 07:41:32,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:32,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-11-28 07:41:32,168 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:32,168 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:32,169 INFO L274 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-11-28 07:41:32,169 INFO L277 CegarLoopResult]: At program point L16-2(lines 16 18) the Hoare annotation is: true [2020-11-28 07:41:32,169 INFO L277 CegarLoopResult]: At program point L15-1(lines 15 19) the Hoare annotation is: true [2020-11-28 07:41:32,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:32 BoogieIcfgContainer [2020-11-28 07:41:32,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:32,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:32,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:32,181 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:32,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:32" (3/4) ... [2020-11-28 07:41:32,185 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:32,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:41:32,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:41:32,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:32,263 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a7f315dd-39e2-41fc-8256-2d2b3e3fbd63/bin/utaipan/witness.graphml [2020-11-28 07:41:32,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:32,276 INFO L168 Benchmark]: Toolchain (without parser) took 780.27 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 57.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:32,277 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:32,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.21 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 77.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:32,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 98.6 MB. Free memory was 77.7 MB in the beginning and 76.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:32,281 INFO L168 Benchmark]: Boogie Preprocessor took 17.48 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 75.6 MB in the end (delta: 797.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:32,282 INFO L168 Benchmark]: RCFGBuilder took 237.51 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 66.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:32,284 INFO L168 Benchmark]: TraceAbstraction took 168.83 ms. Allocated memory is still 98.6 MB. Free memory was 66.4 MB in the beginning and 59.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:32,294 INFO L168 Benchmark]: Witness Printer took 92.35 ms. Allocated memory is still 98.6 MB. Free memory was 59.6 MB in the beginning and 57.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:32,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.21 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 77.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 98.6 MB. Free memory was 77.7 MB in the beginning and 76.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.48 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 75.6 MB in the end (delta: 797.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 237.51 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 66.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 168.83 ms. Allocated memory is still 98.6 MB. Free memory was 66.4 MB in the beginning and 59.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Witness Printer took 92.35 ms. Allocated memory is still 98.6 MB. Free memory was 59.6 MB in the beginning and 57.5 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: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred 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: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...