./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8d75e9fae498ee6dcc1db93c63bfd5373c78fc1b ............................................................................................................................................................................................................................... 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 12:51:21,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:51:21,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:51:21,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:51:21,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:51:21,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:51:21,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:51:21,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:51:21,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:51:21,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:51:21,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:51:21,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:51:21,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:51:21,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:51:21,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:51:21,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:51:21,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:51:21,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:51:21,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:51:21,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:51:21,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:51:21,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:51:21,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:51:21,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:51:21,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:51:21,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:51:21,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:51:21,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:51:21,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:51:21,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:51:21,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:51:21,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:51:21,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:51:21,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:51:21,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:51:21,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:51:21,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:51:21,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:51:21,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:51:21,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:51:21,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:51:21,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:51:21,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:51:21,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:51:21,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:51:21,782 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:51:21,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:51:21,782 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:51:21,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:51:21,783 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:51:21,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:51:21,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:51:21,785 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:51:21,785 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:51:21,785 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:51:21,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:51:21,786 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:51:21,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:51:21,788 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:51:21,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:51:21,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:51:21,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:51:21,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:51:21,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:51:21,789 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:51:21,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:51:21,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:51:21,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:51:21,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:51:21,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:51:21,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:51:21,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:51:21,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:51:21,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:51:21,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:51:21,794 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:51:21,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:51:21,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:51:21,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:51:21,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:51:21,795 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_d217e4d2-ee27-408c-b1bc-5ec961929c5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d75e9fae498ee6dcc1db93c63bfd5373c78fc1b [2020-11-22 12:51:22,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:51:22,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:51:22,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:51:22,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:51:22,147 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:51:22,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/../../sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-1.i [2020-11-22 12:51:22,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/data/e009e7b12/0bb83d726787463bb42f704c90dd1345/FLAG5243501c8 [2020-11-22 12:51:22,889 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:51:22,889 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-1.i [2020-11-22 12:51:22,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/data/e009e7b12/0bb83d726787463bb42f704c90dd1345/FLAG5243501c8 [2020-11-22 12:51:23,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/data/e009e7b12/0bb83d726787463bb42f704c90dd1345 [2020-11-22 12:51:23,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:51:23,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:51:23,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:23,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:51:23,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:51:23,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47899dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23, skipping insertion in model container [2020-11-22 12:51:23,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:51:23,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:51:23,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:23,635 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:51:23,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:23,743 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:51:23,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23 WrapperNode [2020-11-22 12:51:23,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:23,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:23,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:51:23,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:51:23,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:23,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:51:23,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:51:23,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:51:23,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... [2020-11-22 12:51:23,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:51:23,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:51:23,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:51:23,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:51:23,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/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 12:51:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:51:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:51:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:51:23,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:51:24,315 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:51:24,316 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-22 12:51:24,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:24 BoogieIcfgContainer [2020-11-22 12:51:24,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:51:24,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:51:24,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:51:24,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:51:24,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:51:23" (1/3) ... [2020-11-22 12:51:24,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f38aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:24, skipping insertion in model container [2020-11-22 12:51:24,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:23" (2/3) ... [2020-11-22 12:51:24,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f38aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:24, skipping insertion in model container [2020-11-22 12:51:24,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:24" (3/3) ... [2020-11-22 12:51:24,327 INFO L111 eAbstractionObserver]: Analyzing ICFG Multiplication-1.i [2020-11-22 12:51:24,339 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:51:24,344 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-11-22 12:51:24,358 INFO L253 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-11-22 12:51:24,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:51:24,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:51:24,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:51:24,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:51:24,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:51:24,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:51:24,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:51:24,396 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:51:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-11-22 12:51:24,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:51:24,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-11-22 12:51:24,495 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:51:24,495 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-22 12:51:24,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:51:24 BoogieIcfgContainer [2020-11-22 12:51:24,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:51:24,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:51:24,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:51:24,505 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:51:24,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:24" (3/4) ... [2020-11-22 12:51:24,510 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:51:24,521 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 12:51:24,521 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:51:24,521 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:51:24,522 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:51:24,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d217e4d2-ee27-408c-b1bc-5ec961929c5d/bin/utaipan/witness.graphml [2020-11-22 12:51:24,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:51:24,552 INFO L168 Benchmark]: Toolchain (without parser) took 1331.48 ms. Allocated memory is still 113.2 MB. Free memory was 75.2 MB in the beginning and 55.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:24,552 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory is still 92.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:24,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.28 ms. Allocated memory is still 113.2 MB. Free memory was 75.1 MB in the beginning and 80.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:24,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.25 ms. Allocated memory is still 113.2 MB. Free memory was 80.1 MB in the beginning and 78.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:24,562 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 113.2 MB. Free memory was 78.5 MB in the beginning and 77.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:51:24,562 INFO L168 Benchmark]: RCFGBuilder took 488.98 ms. Allocated memory is still 113.2 MB. Free memory was 77.5 MB in the beginning and 64.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:24,563 INFO L168 Benchmark]: TraceAbstraction took 183.58 ms. Allocated memory is still 113.2 MB. Free memory was 63.9 MB in the beginning and 57.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:24,564 INFO L168 Benchmark]: Witness Printer took 44.90 ms. Allocated memory is still 113.2 MB. Free memory was 57.6 MB in the beginning and 55.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:51:24,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory is still 92.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 508.28 ms. Allocated memory is still 113.2 MB. Free memory was 75.1 MB in the beginning and 80.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.25 ms. Allocated memory is still 113.2 MB. Free memory was 80.1 MB in the beginning and 78.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 113.2 MB. Free memory was 78.5 MB in the beginning and 77.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 488.98 ms. Allocated memory is still 113.2 MB. Free memory was 77.5 MB in the beginning and 64.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 183.58 ms. Allocated memory is still 113.2 MB. Free memory was 63.9 MB in the beginning and 57.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Witness Printer took 44.90 ms. Allocated memory is still 113.2 MB. Free memory was 57.6 MB in the beginning and 55.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...