./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6f4e1dd3818e9d3e8c54653af66359ead501b84 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:20,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:20,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:20,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:20,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:20,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:20,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:20,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:20,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:20,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:20,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:20,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:20,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:20,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:20,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:20,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:20,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:20,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:20,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:20,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:20,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:20,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:20,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:20,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:20,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:20,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:20,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:20,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:20,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:20,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:20,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:20,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:20,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:20,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:20,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:20,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:20,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:20,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:20,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:20,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:20,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:20,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-28 02:56:20,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:20,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:20,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:20,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:20,622 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:20,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:20,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:20,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:20,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:20,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:20,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:20,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:20,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:20,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:20,626 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 02:56:20,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:20,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:20,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:20,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:20,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:20,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:20,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:20,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:20,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:20,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:20,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:20,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:20,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:20,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:20,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:20,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:20,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4e1dd3818e9d3e8c54653af66359ead501b84 [2020-11-28 02:56:20,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:20,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:20,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:20,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:20,974 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:20,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/../../sv-benchmarks/c/recursive/gcd01-1.c [2020-11-28 02:56:21,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/data/7f1a36778/148aa7ee9875420f858ce8ecc693c6eb/FLAG016fd8676 [2020-11-28 02:56:21,604 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:21,605 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/sv-benchmarks/c/recursive/gcd01-1.c [2020-11-28 02:56:21,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/data/7f1a36778/148aa7ee9875420f858ce8ecc693c6eb/FLAG016fd8676 [2020-11-28 02:56:21,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/data/7f1a36778/148aa7ee9875420f858ce8ecc693c6eb [2020-11-28 02:56:21,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:21,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:21,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:21,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:21,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:21,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:21,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef2ec8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:21, skipping insertion in model container [2020-11-28 02:56:21,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:21,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:21,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:22,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,198 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:22,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,250 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:22,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22 WrapperNode [2020-11-28 02:56:22,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:22,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:22,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:22,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:22,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:22,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:22,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:22,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-11-28 02:56:22,421 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-11-28 02:56:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:22,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:22,929 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:22,930 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 02:56:22,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22 BoogieIcfgContainer [2020-11-28 02:56:22,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:22,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:22,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:22,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:22,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:21" (1/3) ... [2020-11-28 02:56:22,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6363ff98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (2/3) ... [2020-11-28 02:56:22,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6363ff98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/3) ... [2020-11-28 02:56:22,942 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-11-28 02:56:22,953 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:22,958 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 02:56:22,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:56:23,011 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:23,011 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:23,011 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:23,012 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:23,012 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:23,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:23,012 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:23,012 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-28 02:56:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:23,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:23,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:23,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,047 INFO L82 PathProgramCache]: Analyzing trace with hash 995104148, now seen corresponding path program 1 times [2020-11-28 02:56:23,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194037196] [2020-11-28 02:56:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194037196] [2020-11-28 02:56:23,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:23,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:23,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535630981] [2020-11-28 02:56:23,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:23,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:23,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:23,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:23,305 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2020-11-28 02:56:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:23,483 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-11-28 02:56:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:23,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 02:56:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:23,493 INFO L225 Difference]: With dead ends: 38 [2020-11-28 02:56:23,493 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 02:56:23,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 02:56:23,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 02:56:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 02:56:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 02:56:23,530 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2020-11-28 02:56:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:23,530 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 02:56:23,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 02:56:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:23,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:23,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:23,532 INFO L429 AbstractCegarLoop]: === Iteration 2 === [gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash 995103924, now seen corresponding path program 1 times [2020-11-28 02:56:23,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878204702] [2020-11-28 02:56:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878204702] [2020-11-28 02:56:23,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:23,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:23,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765832990] [2020-11-28 02:56:23,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:23,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:23,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:23,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:23,615 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2020-11-28 02:56:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:23,711 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-11-28 02:56:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:23,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 02:56:23,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:23,713 INFO L225 Difference]: With dead ends: 17 [2020-11-28 02:56:23,713 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:23,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:23,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 02:56:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:23,716 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:23,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:23,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:23,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:23,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:56:23,908 INFO L274 CegarLoopResult]: For program point gcdFINAL(lines 17 28) no Hoare annotation was computed. [2020-11-28 02:56:23,908 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-11-28 02:56:23,908 INFO L274 CegarLoopResult]: For program point gcdEXIT(lines 17 28) no Hoare annotation was computed. [2020-11-28 02:56:23,908 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-11-28 02:56:23,908 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 02:56:23,908 INFO L274 CegarLoopResult]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 02:56:23,909 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y1 2147483647) (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= gcd_~y2 2147483647))) [2020-11-28 02:56:23,909 INFO L274 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-11-28 02:56:23,909 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 02:56:23,909 INFO L274 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2020-11-28 02:56:23,909 INFO L277 CegarLoopResult]: At program point gcdENTRY(lines 17 28) the Hoare annotation is: true [2020-11-28 02:56:23,909 INFO L270 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y1 2147483647) (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= gcd_~y2 2147483647))) [2020-11-28 02:56:23,909 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-11-28 02:56:23,910 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-11-28 02:56:23,910 INFO L274 CegarLoopResult]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-11-28 02:56:23,910 INFO L274 CegarLoopResult]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-11-28 02:56:23,910 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-28 02:56:23,910 INFO L274 CegarLoopResult]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 02:56:23,910 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:56:23,910 INFO L274 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-11-28 02:56:23,911 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-11-28 02:56:23,911 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 02:56:23,911 INFO L274 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-11-28 02:56:23,911 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:56:23,911 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:56:23,911 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:56:23,911 INFO L277 CegarLoopResult]: At program point L43(lines 30 45) the Hoare annotation is: true [2020-11-28 02:56:23,911 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-11-28 02:56:23,912 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-28 02:56:23,912 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-11-28 02:56:23,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:23 BoogieIcfgContainer [2020-11-28 02:56:23,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:23,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:23,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:23,927 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:23,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/4) ... [2020-11-28 02:56:23,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:23,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2020-11-28 02:56:23,941 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 02:56:23,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 02:56:23,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:23,942 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:24,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15cc7f59-d6d7-4175-8a31-ff87fdcf76ba/bin/uautomizer/witness.graphml [2020-11-28 02:56:24,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:24,010 INFO L168 Benchmark]: Toolchain (without parser) took 2049.13 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 65.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,014 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:24,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.96 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 97.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 119.5 MB. Free memory was 97.1 MB in the beginning and 96.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:24,015 INFO L168 Benchmark]: Boogie Preprocessor took 40.52 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.0 MB in the end (delta: 943.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,016 INFO L168 Benchmark]: RCFGBuilder took 596.33 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 81.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,016 INFO L168 Benchmark]: TraceAbstraction took 991.83 ms. Allocated memory is still 119.5 MB. Free memory was 80.8 MB in the beginning and 68.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,017 INFO L168 Benchmark]: Witness Printer took 80.86 ms. Allocated memory is still 119.5 MB. Free memory was 68.3 MB in the beginning and 65.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.96 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 97.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.00 ms. Allocated memory is still 119.5 MB. Free memory was 97.1 MB in the beginning and 96.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.52 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.0 MB in the end (delta: 943.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 596.33 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 81.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 991.83 ms. Allocated memory is still 119.5 MB. Free memory was 80.8 MB in the beginning and 68.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * Witness Printer took 80.86 ms. Allocated memory is still 119.5 MB. Free memory was 68.3 MB in the beginning and 65.5 MB in the end (delta: 2.8 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: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 70 SDslu, 52 SDs, 0 SdLazy, 96 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 61 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 540 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...