./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC --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 64bit --witnessprinter.graph.data.programhash ff3652fa62b489d4e6a4a85c8349c06d13bd2232 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:19:06,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:19:06,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:19:06,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:19:06,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:19:06,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:19:06,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:19:06,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:19:06,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:19:06,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:19:07,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:19:07,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:19:07,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:19:07,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:19:07,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:19:07,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:19:07,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:19:07,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:19:07,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:19:07,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:19:07,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:19:07,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:19:07,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:19:07,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:19:07,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:19:07,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:19:07,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:19:07,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:19:07,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:19:07,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:19:07,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:19:07,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:19:07,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:19:07,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:19:07,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:19:07,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:19:07,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:19:07,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:19:07,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:19:07,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:19:07,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:19:07,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:19:07,080 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:19:07,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:19:07,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:19:07,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:19:07,083 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:19:07,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:19:07,084 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:19:07,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:19:07,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:19:07,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:19:07,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:19:07,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:19:07,085 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:19:07,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:19:07,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:19:07,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:19:07,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:19:07,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:19:07,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:19:07,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:19:07,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:19:07,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:19:07,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:19:07,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:19:07,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:19:07,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:19:07,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:19:07,090 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_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2021-10-11 00:19:07,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:19:07,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:19:07,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:19:07,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:19:07,501 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:19:07,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-11 00:19:07,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/data/90600abe3/2b77b97746ef482bae63212f207c8a4a/FLAGbf55c4074 [2021-10-11 00:19:08,162 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:19:08,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-11 00:19:08,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/data/90600abe3/2b77b97746ef482bae63212f207c8a4a/FLAGbf55c4074 [2021-10-11 00:19:08,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/data/90600abe3/2b77b97746ef482bae63212f207c8a4a [2021-10-11 00:19:08,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:19:08,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:19:08,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:08,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:19:08,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:19:08,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79700d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08, skipping insertion in model container [2021-10-11 00:19:08,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:19:08,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:19:08,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:08,790 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:19:08,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:08,822 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:19:08,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08 WrapperNode [2021-10-11 00:19:08,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:08,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:19:08,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:19:08,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:19:08,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:19:08,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:19:08,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:19:08,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:19:08,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... [2021-10-11 00:19:08,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:19:08,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:19:08,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:19:08,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:19:08,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:19:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:19:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:19:09,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:19:09,285 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 00:19:09,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:09 BoogieIcfgContainer [2021-10-11 00:19:09,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:19:09,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:19:09,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:19:09,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:19:09,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:19:08" (1/3) ... [2021-10-11 00:19:09,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16217fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:09, skipping insertion in model container [2021-10-11 00:19:09,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:08" (2/3) ... [2021-10-11 00:19:09,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16217fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:09, skipping insertion in model container [2021-10-11 00:19:09,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:09" (3/3) ... [2021-10-11 00:19:09,306 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-11 00:19:09,329 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:19:09,333 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:19:09,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:19:09,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:19:09,392 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:19:09,393 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:19:09,393 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:19:09,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:19:09,393 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:19:09,394 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:19:09,394 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:19:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-10-11 00:19:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:19:09,416 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:09,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:19:09,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:09,424 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2021-10-11 00:19:09,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:09,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159863388] [2021-10-11 00:19:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:09,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159863388] [2021-10-11 00:19:09,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:09,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:19:09,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926384019] [2021-10-11 00:19:09,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:19:09,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:09,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:19:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:09,642 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2021-10-11 00:19:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:09,698 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2021-10-11 00:19:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:19:09,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 00:19:09,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:09,712 INFO L225 Difference]: With dead ends: 28 [2021-10-11 00:19:09,717 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 00:19:09,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 00:19:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 00:19:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:19:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-11 00:19:09,771 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-11 00:19:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:09,772 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 00:19:09,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:19:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-11 00:19:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:19:09,774 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:09,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:19:09,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:19:09,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-11 00:19:09,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:09,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642743823] [2021-10-11 00:19:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:09,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642743823] [2021-10-11 00:19:09,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:09,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:19:09,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386060899] [2021-10-11 00:19:09,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:19:09,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:09,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:19:09,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:09,813 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2021-10-11 00:19:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:09,849 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-10-11 00:19:09,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:19:09,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 00:19:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:09,851 INFO L225 Difference]: With dead ends: 18 [2021-10-11 00:19:09,851 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 00:19:09,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 00:19:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-10-11 00:19:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:19:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-11 00:19:09,871 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2021-10-11 00:19:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:09,872 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-11 00:19:09,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:19:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-10-11 00:19:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:19:09,873 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:09,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:19:09,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:19:09,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash 29867816, now seen corresponding path program 1 times [2021-10-11 00:19:09,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:09,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72493083] [2021-10-11 00:19:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:09,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72493083] [2021-10-11 00:19:09,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:09,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:19:09,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409887887] [2021-10-11 00:19:09,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:19:09,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:19:09,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:09,938 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2021-10-11 00:19:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:09,956 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-10-11 00:19:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:19:09,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:19:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:09,958 INFO L225 Difference]: With dead ends: 12 [2021-10-11 00:19:09,959 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 00:19:09,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 00:19:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 00:19:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:19:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-11 00:19:09,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2021-10-11 00:19:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:09,966 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-11 00:19:09,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:19:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-11 00:19:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:19:09,967 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:09,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:19:09,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:19:09,968 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:09,970 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-11 00:19:09,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:09,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886399311] [2021-10-11 00:19:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:10,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886399311] [2021-10-11 00:19:10,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:10,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:19:10,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005501779] [2021-10-11 00:19:10,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:19:10,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:10,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:19:10,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:10,032 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2021-10-11 00:19:10,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:10,086 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-10-11 00:19:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:19:10,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:19:10,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:10,088 INFO L225 Difference]: With dead ends: 12 [2021-10-11 00:19:10,088 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 00:19:10,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 00:19:10,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-11 00:19:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:19:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 00:19:10,093 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2021-10-11 00:19:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:10,094 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 00:19:10,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:19:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 00:19:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:19:10,095 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:10,095 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 00:19:10,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:19:10,096 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2021-10-11 00:19:10,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:10,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654589186] [2021-10-11 00:19:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:10,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654589186] [2021-10-11 00:19:10,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840446318] [2021-10-11 00:19:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:19:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:10,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:19:10,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:19:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:10,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:19:10,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:19:10,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187217843] [2021-10-11 00:19:10,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:19:10,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:10,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:19:10,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:19:10,281 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2021-10-11 00:19:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:10,324 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-11 00:19:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:19:10,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:19:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:10,326 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:19:10,326 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 00:19:10,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:19:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 00:19:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2021-10-11 00:19:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 00:19:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-10-11 00:19:10,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2021-10-11 00:19:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:10,334 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-10-11 00:19:10,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:19:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-10-11 00:19:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:19:10,335 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:10,335 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-10-11 00:19:10,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:10,561 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:10,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2000108501, now seen corresponding path program 2 times [2021-10-11 00:19:10,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:10,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405138972] [2021-10-11 00:19:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:10,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405138972] [2021-10-11 00:19:10,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292677472] [2021-10-11 00:19:10,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:19:10,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:19:10,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:19:10,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:19:10,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:19:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 00:19:10,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:19:10,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2021-10-11 00:19:10,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791401063] [2021-10-11 00:19:10,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:19:10,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:19:10,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:19:10,789 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 7 states. [2021-10-11 00:19:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:10,956 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-10-11 00:19:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:19:10,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 00:19:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:10,959 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:19:10,959 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:19:10,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:19:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:19:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:19:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:19:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:19:10,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-11 00:19:10,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:10,965 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:19:10,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:19:10,965 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:19:10,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:19:11,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:19:11,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:19:11,287 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 00:19:11,287 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:19:11,288 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 00:19:11,288 INFO L258 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2021-10-11 00:19:11,289 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2021-10-11 00:19:11,289 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-11 00:19:11,289 INFO L262 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2021-10-11 00:19:11,289 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 00:19:11,290 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 00:19:11,290 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:19:11,290 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:19:11,290 INFO L258 CegarLoopResult]: At program point L24(lines 13 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-11 00:19:11,290 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-11 00:19:11,291 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-11 00:19:11,291 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-11 00:19:11,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:19:11 BoogieIcfgContainer [2021-10-11 00:19:11,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:19:11,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:19:11,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:19:11,311 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:19:11,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:09" (3/4) ... [2021-10-11 00:19:11,317 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:19:11,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 00:19:11,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:19:11,375 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa23d2a8-2b9c-4888-9b79-fb685d7603b0/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:19:11,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:19:11,378 INFO L168 Benchmark]: Toolchain (without parser) took 2842.81 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 81.0 MB in the beginning and 85.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:11,379 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 119.5 MB. Free memory was 97.2 MB in the beginning and 97.1 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:11,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.76 ms. Allocated memory is still 119.5 MB. Free memory was 80.8 MB in the beginning and 94.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:11,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 93.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:11,382 INFO L168 Benchmark]: Boogie Preprocessor took 21.70 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 92.6 MB in the end (delta: 996.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:11,382 INFO L168 Benchmark]: RCFGBuilder took 402.64 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 83.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:11,384 INFO L168 Benchmark]: TraceAbstraction took 2015.78 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 82.8 MB in the beginning and 87.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:11,384 INFO L168 Benchmark]: Witness Printer took 65.23 ms. Allocated memory is still 144.7 MB. Free memory was 87.1 MB in the beginning and 85.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:11,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 119.5 MB. Free memory was 97.2 MB in the beginning and 97.1 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.76 ms. Allocated memory is still 119.5 MB. Free memory was 80.8 MB in the beginning and 94.7 MB in the end (delta: -14.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 93.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.70 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 92.6 MB in the end (delta: 996.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 402.64 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 83.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2015.78 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 82.8 MB in the beginning and 87.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * Witness Printer took 65.23 ms. Allocated memory is still 144.7 MB. Free memory was 87.1 MB in the beginning and 85.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && x <= 2147483647) && 0 <= x - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 58 SDslu, 7 SDs, 0 SdLazy, 79 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 513 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 788 SizeOfPredicates, 1 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 5/18 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...