./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5-1.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-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/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 88d908807c562516d59e3074a7f6cea9889fd89a ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:35:03,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:03,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:03,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:03,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:03,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:03,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:03,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:03,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:03,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:03,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:03,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:03,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:03,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:03,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:03,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:03,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:03,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:03,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:03,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:03,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:03,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:03,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:03,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:03,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:03,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:03,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:03,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:03,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:03,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:03,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:03,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:03,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:03,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:03,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:03,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:03,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:03,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:03,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:03,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:03,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:03,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:35:03,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:03,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:03,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:03,658 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:03,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:03,659 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:03,659 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:03,659 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:03,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:03,660 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:03,660 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:03,660 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:03,661 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:03,661 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:03,661 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:03,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:03,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:03,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:03,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:03,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:03,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:03,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:03,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:03,664 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:35:03,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:03,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:03,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:03,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:03,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:03,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:03,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:03,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:03,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:03,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:03,667 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:03,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:03,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:03,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:03,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:03,668 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_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d908807c562516d59e3074a7f6cea9889fd89a [2020-12-03 12:35:03,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:03,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:04,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:04,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:04,004 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:04,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2020-12-03 12:35:04,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/data/5247542a6/d90db6a267a64c8a94c2636388ccc9f1/FLAG102b8cae6 [2020-12-03 12:35:04,517 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:04,520 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2020-12-03 12:35:04,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/data/5247542a6/d90db6a267a64c8a94c2636388ccc9f1/FLAG102b8cae6 [2020-12-03 12:35:04,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/data/5247542a6/d90db6a267a64c8a94c2636388ccc9f1 [2020-12-03 12:35:04,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:04,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:04,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:04,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:04,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:04,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:04" (1/1) ... [2020-12-03 12:35:04,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f2bd30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:04, skipping insertion in model container [2020-12-03 12:35:04,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:04" (1/1) ... [2020-12-03 12:35:04,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:04,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:05,098 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2020-12-03 12:35:05,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:05,136 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:05,155 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2020-12-03 12:35:05,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:05,193 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:05,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05 WrapperNode [2020-12-03 12:35:05,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:05,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:05,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:05,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:05,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:05,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:05,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:05,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:05,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... [2020-12-03 12:35:05,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:05,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:05,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:05,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:05,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/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 [2020-12-03 12:35:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:05,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:35:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:05,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:05,734 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-03 12:35:05,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:05 BoogieIcfgContainer [2020-12-03 12:35:05,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:05,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:05,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:05,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:05,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:04" (1/3) ... [2020-12-03 12:35:05,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7474747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:05, skipping insertion in model container [2020-12-03 12:35:05,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:05" (2/3) ... [2020-12-03 12:35:05,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7474747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:05, skipping insertion in model container [2020-12-03 12:35:05,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:05" (3/3) ... [2020-12-03 12:35:05,759 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-12-03 12:35:05,784 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:05,802 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:35:05,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:35:05,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:05,847 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:05,860 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:05,860 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:05,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:05,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:05,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:05,861 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-03 12:35:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:35:05,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:05,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:35:05,892 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:05,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1003959326, now seen corresponding path program 1 times [2020-12-03 12:35:05,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:05,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388534582] [2020-12-03 12:35:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:06,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388534582] [2020-12-03 12:35:06,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:06,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:35:06,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824067990] [2020-12-03 12:35:06,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:06,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:06,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:06,118 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-12-03 12:35:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:06,150 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2020-12-03 12:35:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:06,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-03 12:35:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:06,161 INFO L225 Difference]: With dead ends: 27 [2020-12-03 12:35:06,162 INFO L226 Difference]: Without dead ends: 15 [2020-12-03 12:35:06,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-03 12:35:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2020-12-03 12:35:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-03 12:35:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2020-12-03 12:35:06,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 8 [2020-12-03 12:35:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:06,198 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-12-03 12:35:06,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2020-12-03 12:35:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-03 12:35:06,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:06,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:35:06,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:35:06,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1057738346, now seen corresponding path program 1 times [2020-12-03 12:35:06,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:06,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249801856] [2020-12-03 12:35:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:06,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249801856] [2020-12-03 12:35:06,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973683980] [2020-12-03 12:35:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/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 [2020-12-03 12:35:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:06,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-03 12:35:06,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:35:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:06,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:35:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:06,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [683048879] [2020-12-03 12:35:06,491 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-03 12:35:06,491 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:35:06,497 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:35:06,503 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:35:06,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:35:07,150 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:35:07,366 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-12-03 12:35:07,534 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-12-03 12:35:07,716 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-03 12:35:07,888 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-12-03 12:35:07,891 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:35:07,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:35:07,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2020-12-03 12:35:07,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192695006] [2020-12-03 12:35:07,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 12:35:07,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:07,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 12:35:07,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-03 12:35:07,895 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 7 states. [2020-12-03 12:35:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:07,941 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-12-03 12:35:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:35:07,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-03 12:35:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:07,943 INFO L225 Difference]: With dead ends: 28 [2020-12-03 12:35:07,943 INFO L226 Difference]: Without dead ends: 18 [2020-12-03 12:35:07,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-03 12:35:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-03 12:35:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2020-12-03 12:35:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-03 12:35:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2020-12-03 12:35:07,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 9 [2020-12-03 12:35:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:07,949 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-12-03 12:35:07,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 12:35:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2020-12-03 12:35:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:35:07,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:07,950 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:35:08,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-03 12:35:08,163 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:08,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:08,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1320065250, now seen corresponding path program 2 times [2020-12-03 12:35:08,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:08,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526671670] [2020-12-03 12:35:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:08,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526671670] [2020-12-03 12:35:08,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483032693] [2020-12-03 12:35:08,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:35:08,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-03 12:35:08,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 12:35:08,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-03 12:35:08,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:35:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-03 12:35:08,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:35:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-03 12:35:08,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-03 12:35:08,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 11 [2020-12-03 12:35:08,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520581911] [2020-12-03 12:35:08,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:35:08,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:08,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:35:08,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-03 12:35:08,747 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 6 states. [2020-12-03 12:35:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:08,989 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2020-12-03 12:35:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:35:08,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-03 12:35:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:08,991 INFO L225 Difference]: With dead ends: 23 [2020-12-03 12:35:08,991 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:35:08,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-03 12:35:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:35:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:35:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:35:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:35:08,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-03 12:35:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:08,993 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:35:08,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:35:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:35:08,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:35:09,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-03 12:35:09,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:35:09,350 INFO L258 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: (or (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (= ULTIMATE.start_main_~v~0 0)) [2020-12-03 12:35:09,350 INFO L258 CegarLoopResult]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (not (= 0 (mod ULTIMATE.start_main_~v~0 4))) (< (mod ULTIMATE.start_main_~v~0 4294967296) 10)) [2020-12-03 12:35:09,350 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-03 12:35:09,350 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:35:09,351 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-12-03 12:35:09,351 INFO L258 CegarLoopResult]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (not (= 0 (mod ULTIMATE.start_main_~v~0 4))) (< (mod ULTIMATE.start_main_~v~0 4294967296) 10)) [2020-12-03 12:35:09,351 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:35:09,351 INFO L258 CegarLoopResult]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (not (= 0 (mod ULTIMATE.start_main_~v~0 4))) (< (mod ULTIMATE.start_main_~v~0 4294967296) 10)) [2020-12-03 12:35:09,351 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 25) the Hoare annotation is: (or (not (= 0 (mod ULTIMATE.start_main_~v~0 4))) (< (mod ULTIMATE.start_main_~v~0 4294967296) 10)) [2020-12-03 12:35:09,351 INFO L262 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-12-03 12:35:09,351 INFO L258 CegarLoopResult]: At program point L6-2(lines 1 27) the Hoare annotation is: (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 4294967306)) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ ULTIMATE.start___VERIFIER_assert_~cond (- 1)) (- 4)) (- 1))) 1073741824) 1)))) [2020-12-03 12:35:09,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:09 BoogieIcfgContainer [2020-12-03 12:35:09,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:09,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:09,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:09,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:09,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:05" (3/4) ... [2020-12-03 12:35:09,386 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:35:09,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-03 12:35:09,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-03 12:35:09,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:35:09,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:35:09,436 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_65b415ab-e8cc-4dfb-9960-caea9b6b2f85/bin/utaipan/witness.graphml [2020-12-03 12:35:09,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:09,446 INFO L168 Benchmark]: Toolchain (without parser) took 4529.30 ms. Allocated memory was 81.8 MB in the beginning and 125.8 MB in the end (delta: 44.0 MB). Free memory was 49.3 MB in the beginning and 74.6 MB in the end (delta: -25.3 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:09,446 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:09,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.02 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 49.1 MB in the beginning and 78.7 MB in the end (delta: -29.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:09,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.68 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:09,448 INFO L168 Benchmark]: Boogie Preprocessor took 22.32 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 76.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:09,449 INFO L168 Benchmark]: RCFGBuilder took 484.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 57.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:09,449 INFO L168 Benchmark]: TraceAbstraction took 3631.38 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 57.1 MB in the beginning and 76.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:09,450 INFO L168 Benchmark]: Witness Printer took 74.04 ms. Allocated memory is still 125.8 MB. Free memory was 76.7 MB in the beginning and 74.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:09,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 62.0 MB in the beginning and 62.0 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.02 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 49.1 MB in the beginning and 78.7 MB in the end (delta: -29.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.68 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.32 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 76.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 484.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 57.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3631.38 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 57.1 MB in the beginning and 76.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.04 ms. Allocated memory is still 125.8 MB. Free memory was 76.7 MB in the beginning and 74.6 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: 7]: 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: 19]: Loop Invariant Derived loop invariant: !(0 == v % 4) || v % 4294967296 < 10 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !(0 == v % 4) || v % 4294967296 < 10 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: !(0 == v % 4) || v % 4294967296 < 10 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: ((cond < 4 && (v + 4294967295) % 4294967296 < 10) && 0 <= cond) && ((cond * -1 + 10) / 4 + (cond + -4294967306) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (cond + -1) / -4 * -1) / 1073741824 + 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(0 == v % 4) || v % 4294967296 < 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 46 SDslu, 71 SDs, 0 SdLazy, 28 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 25 NumberOfFragments, 110 HoareAnnotationTreeSize, 6 FomulaSimplifications, 327 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 217 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 50 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 1849 SizeOfPredicates, 5 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 20/33 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...