./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd-ll.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_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd-ll.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/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 96a3282447b8b2b0ec81a0cc8869c9b6be11590e ................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:08,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:08,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:08,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:08,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:08,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:08,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:08,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:08,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:08,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:08,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:08,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:08,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:08,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:08,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:08,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:08,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:08,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:08,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:08,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:08,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:08,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:08,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:08,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:08,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:08,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:08,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:08,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:08,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:08,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:08,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:08,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:08,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:08,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:08,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:08,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:08,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:08,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:08,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:08,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:08,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:08,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:08,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:08,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:08,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:08,731 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:08,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:08,732 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:08,732 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:08,732 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:08,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:08,733 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:08,733 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:08,733 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:08,733 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:08,734 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:08,734 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:08,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:08,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:08,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:08,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:08,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:08,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:08,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:08,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:08,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:08,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:08,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:08,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:08,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:08,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:08,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:08,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:08,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:08,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:08,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:08,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:08,739 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:08,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:08,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:08,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:08,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:08,739 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_1e44c2f2-4122-4ac6-9dcd-a744996c6212/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96a3282447b8b2b0ec81a0cc8869c9b6be11590e [2020-11-22 12:56:08,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:09,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:09,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:09,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:09,007 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:09,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/../../sv-benchmarks/c/nla-digbench/egcd-ll.c [2020-11-22 12:56:09,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/data/ce885be4f/201092a07b5f4ff39cb223ef77fe034a/FLAGcf87a95e5 [2020-11-22 12:56:09,478 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:09,479 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/sv-benchmarks/c/nla-digbench/egcd-ll.c [2020-11-22 12:56:09,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/data/ce885be4f/201092a07b5f4ff39cb223ef77fe034a/FLAGcf87a95e5 [2020-11-22 12:56:09,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/data/ce885be4f/201092a07b5f4ff39cb223ef77fe034a [2020-11-22 12:56:09,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:09,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:09,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:09,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:09,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:09,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6165f7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:09, skipping insertion in model container [2020-11-22 12:56:09,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:09" (1/1) ... [2020-11-22 12:56:09,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:09,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:10,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:10,078 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:10,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:10,132 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:10,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10 WrapperNode [2020-11-22 12:56:10,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:10,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:10,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:10,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:10,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:10,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:10,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:10,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:10,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... [2020-11-22 12:56:10,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:10,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:10,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:10,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:10,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/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 [2020-11-22 12:56:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:10,803 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:10,803 INFO L298 CfgBuilder]: Removed 37 assume(true) statements. [2020-11-22 12:56:10,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:10 BoogieIcfgContainer [2020-11-22 12:56:10,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:10,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:10,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:10,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:10,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:09" (1/3) ... [2020-11-22 12:56:10,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719b2ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:10, skipping insertion in model container [2020-11-22 12:56:10,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:10" (2/3) ... [2020-11-22 12:56:10,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719b2ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:10, skipping insertion in model container [2020-11-22 12:56:10,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:10" (3/3) ... [2020-11-22 12:56:10,817 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2020-11-22 12:56:10,827 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:10,832 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-22 12:56:10,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-22 12:56:10,865 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:10,865 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:10,865 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:10,865 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:10,865 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:10,866 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:10,866 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:10,866 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-22 12:56:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:56:10,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:10,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:56:10,883 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash 5000020, now seen corresponding path program 1 times [2020-11-22 12:56:10,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:10,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612796404] [2020-11-22 12:56:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:10,976 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:10,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699833652] [2020-11-22 12:56:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/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 [2020-11-22 12:56:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:11,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 12:56:11,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:11,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:11,224 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:11,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612796404] [2020-11-22 12:56:11,267 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:11,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699833652] [2020-11-22 12:56:11,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:11,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:56:11,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155427490] [2020-11-22 12:56:11,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:11,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:11,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:11,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:11,288 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2020-11-22 12:56:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:13,763 INFO L93 Difference]: Finished difference Result 117 states and 149 transitions. [2020-11-22 12:56:13,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:13,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-22 12:56:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:13,773 INFO L225 Difference]: With dead ends: 117 [2020-11-22 12:56:13,773 INFO L226 Difference]: Without dead ends: 80 [2020-11-22 12:56:13,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:56:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-22 12:56:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2020-11-22 12:56:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-22 12:56:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-11-22 12:56:13,811 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 4 [2020-11-22 12:56:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:13,811 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-11-22 12:56:13,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-11-22 12:56:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:56:13,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:13,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:56:14,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:56:14,035 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:14,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:14,036 INFO L82 PathProgramCache]: Analyzing trace with hash 510238679, now seen corresponding path program 1 times [2020-11-22 12:56:14,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:14,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405394930] [2020-11-22 12:56:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:14,054 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:56:14,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666257375] [2020-11-22 12:56:14,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/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 [2020-11-22 12:56:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:14,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 12:56:14,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:14,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:14,190 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:56:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:14,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405394930] [2020-11-22 12:56:14,195 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:56:14,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666257375] [2020-11-22 12:56:14,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:14,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2020-11-22 12:56:14,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187909035] [2020-11-22 12:56:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:14,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:14,198 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 4 states. [2020-11-22 12:56:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:14,208 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-11-22 12:56:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:56:14,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 12:56:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:14,208 INFO L225 Difference]: With dead ends: 50 [2020-11-22 12:56:14,209 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:56:14,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:56:14,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:56:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:56:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:56:14,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-22 12:56:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:14,214 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:56:14,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:56:14,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:56:14,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:14,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:56:14,466 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:56:14,466 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:56:14,466 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-22 12:56:14,466 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:56:14,467 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-22 12:56:14,467 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:56:14,467 INFO L270 CegarLoopResult]: At program point L11-5(lines 38 39) the Hoare annotation is: false [2020-11-22 12:56:14,467 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:56:14,467 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: false [2020-11-22 12:56:14,467 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:56:14,467 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: false [2020-11-22 12:56:14,467 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:56:14,467 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: false [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:56:14,468 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:56:14,468 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L270 CegarLoopResult]: At program point L41-2(lines 33 50) the Hoare annotation is: false [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:56:14,469 INFO L274 CegarLoopResult]: For program point L33-2(lines 33 50) no Hoare annotation was computed. [2020-11-22 12:56:14,470 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:56:14,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:14 BoogieIcfgContainer [2020-11-22 12:56:14,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:14,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:14,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:14,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:14,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:10" (3/4) ... [2020-11-22 12:56:14,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:56:14,496 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:56:14,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 12:56:14,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:56:14,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:56:14,577 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1e44c2f2-4122-4ac6-9dcd-a744996c6212/bin/utaipan/witness.graphml [2020-11-22 12:56:14,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:14,580 INFO L168 Benchmark]: Toolchain (without parser) took 4693.41 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 75.3 MB in the beginning and 71.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:14,580 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory is still 92.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:14,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.84 ms. Allocated memory is still 113.2 MB. Free memory was 75.1 MB in the beginning and 88.4 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:14,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 86.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:14,582 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 85.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:14,585 INFO L168 Benchmark]: RCFGBuilder took 613.82 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 60.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:14,586 INFO L168 Benchmark]: TraceAbstraction took 3674.95 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.0 MB in the beginning and 74.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:14,588 INFO L168 Benchmark]: Witness Printer took 95.00 ms. Allocated memory is still 136.3 MB. Free memory was 74.4 MB in the beginning and 71.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:14,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory is still 92.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.84 ms. Allocated memory is still 113.2 MB. Free memory was 75.1 MB in the beginning and 88.4 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 86.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.65 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 85.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 613.82 ms. Allocated memory is still 113.2 MB. Free memory was 85.2 MB in the beginning and 60.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3674.95 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.0 MB in the beginning and 74.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Witness Printer took 95.00 ms. Allocated memory is still 136.3 MB. Free memory was 74.4 MB in the beginning and 71.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 52 SDslu, 56 SDs, 0 SdLazy, 46 SolverSat, 9 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=1, 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, 2 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 14 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...