./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G --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 ab66f9f89348f915f5a709aa03ac6e16c276dad15b53c460d26f0885e78d4ce7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:06:15,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:06:15,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:06:15,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:06:15,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:06:15,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:06:15,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:06:15,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:06:15,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:06:15,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:06:15,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:06:15,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:06:15,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:06:15,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:06:15,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:06:15,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:06:15,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:06:15,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:06:15,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:06:15,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:06:15,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:06:15,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:06:15,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:06:15,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:06:15,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:06:15,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:06:15,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:06:15,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:06:15,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:06:15,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:06:15,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:06:15,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:06:15,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:06:15,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:06:15,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:06:15,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:06:15,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:06:15,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:06:15,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:06:15,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:06:15,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:06:15,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-23 14:06:15,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:06:15,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:06:15,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:06:15,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:06:15,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:06:15,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:06:15,400 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:06:15,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:06:15,400 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 14:06:15,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:06:15,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:06:15,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:06:15,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:06:15,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:06:15,403 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 14:06:15,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:06:15,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:06:15,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:06:15,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:06:15,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:06:15,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:06:15,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:06:15,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:06:15,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:06:15,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:06:15,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:06:15,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:06:15,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:06:15,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:06:15,407 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_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab66f9f89348f915f5a709aa03ac6e16c276dad15b53c460d26f0885e78d4ce7 [2021-11-23 14:06:15,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:06:15,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:06:15,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:06:15,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:06:15,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:06:15,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2021-11-23 14:06:15,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/data/d1a6478f0/98e67986dad945489dc9070c6d6e4fa5/FLAGf48388558 [2021-11-23 14:06:16,320 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:06:16,321 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig3.c [2021-11-23 14:06:16,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/data/d1a6478f0/98e67986dad945489dc9070c6d6e4fa5/FLAGf48388558 [2021-11-23 14:06:16,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/data/d1a6478f0/98e67986dad945489dc9070c6d6e4fa5 [2021-11-23 14:06:16,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:06:16,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:06:16,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:06:16,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:06:16,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:06:16,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:16,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a2393c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16, skipping insertion in model container [2021-11-23 14:06:16,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:16,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:06:16,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:06:16,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:06:16,945 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:06:16,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:06:16,971 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:06:16,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16 WrapperNode [2021-11-23 14:06:16,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:06:16,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:06:16,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:06:16,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:06:16,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:16,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,005 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2021-11-23 14:06:17,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:06:17,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:06:17,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:06:17,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:06:17,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:06:17,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:06:17,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:06:17,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:06:17,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (1/1) ... [2021-11-23 14:06:17,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:06:17,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:06:17,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:06:17,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:06:17,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:06:17,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:06:17,179 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:06:17,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:06:17,344 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:06:17,357 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:06:17,357 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 14:06:17,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:17 BoogieIcfgContainer [2021-11-23 14:06:17,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:06:17,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:06:17,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:06:17,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:06:17,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:16" (1/3) ... [2021-11-23 14:06:17,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bda3437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:17, skipping insertion in model container [2021-11-23 14:06:17,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:16" (2/3) ... [2021-11-23 14:06:17,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bda3437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:17, skipping insertion in model container [2021-11-23 14:06:17,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:17" (3/3) ... [2021-11-23 14:06:17,368 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig3.c [2021-11-23 14:06:17,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:06:17,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 14:06:17,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:06:17,474 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:06:17,474 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 14:06:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 14:06:17,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:06:17,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 14:06:17,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:06:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:06:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash 28699945, now seen corresponding path program 1 times [2021-11-23 14:06:17,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:06:17,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88087356] [2021-11-23 14:06:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:06:17,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:06:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:06:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:06:17,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:06:17,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88087356] [2021-11-23 14:06:17,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88087356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:06:17,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:06:17,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:06:17,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84251374] [2021-11-23 14:06:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:06:17,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:06:17,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:06:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:06:17,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:06:17,735 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:06:17,795 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-11-23 14:06:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:06:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 14:06:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:06:17,823 INFO L225 Difference]: With dead ends: 47 [2021-11-23 14:06:17,829 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 14:06:17,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:06:17,839 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:06:17,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 51 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:06:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 14:06:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2021-11-23 14:06:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-23 14:06:17,887 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2021-11-23 14:06:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:06:17,888 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-23 14:06:17,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-23 14:06:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 14:06:17,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:06:17,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 14:06:17,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:06:17,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:06:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:06:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash 28699753, now seen corresponding path program 1 times [2021-11-23 14:06:17,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:06:17,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010742691] [2021-11-23 14:06:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:06:17,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:06:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:06:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:06:17,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:06:17,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010742691] [2021-11-23 14:06:17,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010742691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:06:17,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:06:17,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:06:17,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033034174] [2021-11-23 14:06:17,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:06:17,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:06:17,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:06:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:06:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:06:17,976 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:06:18,048 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-11-23 14:06:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:06:18,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 14:06:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:06:18,050 INFO L225 Difference]: With dead ends: 32 [2021-11-23 14:06:18,051 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 14:06:18,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:06:18,054 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:06:18,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 25 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:06:18,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 14:06:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-23 14:06:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-23 14:06:18,065 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 5 [2021-11-23 14:06:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:06:18,065 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-23 14:06:18,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-23 14:06:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 14:06:18,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:06:18,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 14:06:18,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:06:18,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:06:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:06:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 889698349, now seen corresponding path program 1 times [2021-11-23 14:06:18,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:06:18,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393585030] [2021-11-23 14:06:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:06:18,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:06:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:06:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:06:18,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:06:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393585030] [2021-11-23 14:06:18,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393585030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:06:18,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:06:18,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:06:18,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581250482] [2021-11-23 14:06:18,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:06:18,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:06:18,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:06:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:06:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:06:18,091 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:06:18,100 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2021-11-23 14:06:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:06:18,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 14:06:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:06:18,101 INFO L225 Difference]: With dead ends: 23 [2021-11-23 14:06:18,102 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 14:06:18,102 INFO L932 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 [2021-11-23 14:06:18,104 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:06:18,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:06:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 14:06:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-23 14:06:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-23 14:06:18,117 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 6 [2021-11-23 14:06:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:06:18,117 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-23 14:06:18,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-23 14:06:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 14:06:18,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:06:18,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 14:06:18,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:06:18,120 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:06:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:06:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 889692391, now seen corresponding path program 1 times [2021-11-23 14:06:18,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:06:18,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475311842] [2021-11-23 14:06:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:06:18,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:06:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:06:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:06:18,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:06:18,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475311842] [2021-11-23 14:06:18,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475311842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:06:18,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:06:18,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:06:18,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134674398] [2021-11-23 14:06:18,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:06:18,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:06:18,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:06:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:06:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:06:18,179 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:06:18,192 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-23 14:06:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:06:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 14:06:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:06:18,194 INFO L225 Difference]: With dead ends: 22 [2021-11-23 14:06:18,194 INFO L226 Difference]: Without dead ends: 20 [2021-11-23 14:06:18,194 INFO L932 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 [2021-11-23 14:06:18,196 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:06:18,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:06:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-23 14:06:18,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-23 14:06:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-23 14:06:18,202 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2021-11-23 14:06:18,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:06:18,202 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-23 14:06:18,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:06:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-23 14:06:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 14:06:18,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:06:18,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:06:18,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:06:18,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-23 14:06:18,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:06:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1810845099, now seen corresponding path program 1 times [2021-11-23 14:06:18,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:06:18,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664630862] [2021-11-23 14:06:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:06:18,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:06:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:06:18,217 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 14:06:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 14:06:18,244 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 14:06:18,244 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 14:06:18,246 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-11-23 14:06:18,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-11-23 14:06:18,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-11-23 14:06:18,249 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-11-23 14:06:18,250 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-11-23 14:06:18,251 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-11-23 14:06:18,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:06:18,255 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-23 14:06:18,259 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 14:06:18,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:06:18 BoogieIcfgContainer [2021-11-23 14:06:18,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 14:06:18,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 14:06:18,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 14:06:18,300 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 14:06:18,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:17" (3/4) ... [2021-11-23 14:06:18,306 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 14:06:18,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 14:06:18,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 14:06:18,337 INFO L158 Benchmark]: Toolchain (without parser) took 1557.57ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 62.7MB in the end (delta: 13.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-23 14:06:18,337 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 79.7MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:06:18,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.12ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 67.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 14:06:18,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.25ms. Allocated memory is still 104.9MB. Free memory was 67.5MB in the beginning and 66.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 14:06:18,339 INFO L158 Benchmark]: Boogie Preprocessor took 25.13ms. Allocated memory is still 104.9MB. Free memory was 66.2MB in the beginning and 65.2MB in the end (delta: 925.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:06:18,339 INFO L158 Benchmark]: RCFGBuilder took 326.54ms. Allocated memory is still 104.9MB. Free memory was 65.2MB in the beginning and 56.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 14:06:18,340 INFO L158 Benchmark]: TraceAbstraction took 938.24ms. Allocated memory is still 104.9MB. Free memory was 55.8MB in the beginning and 64.4MB in the end (delta: -8.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 14:06:18,340 INFO L158 Benchmark]: Witness Printer took 36.87ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 62.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 14:06:18,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 79.7MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 37.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.12ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 67.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.25ms. Allocated memory is still 104.9MB. Free memory was 67.5MB in the beginning and 66.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.13ms. Allocated memory is still 104.9MB. Free memory was 66.2MB in the beginning and 65.2MB in the end (delta: 925.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.54ms. Allocated memory is still 104.9MB. Free memory was 65.2MB in the beginning and 56.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 938.24ms. Allocated memory is still 104.9MB. Free memory was 55.8MB in the beginning and 64.4MB in the end (delta: -8.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 36.87ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 62.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x = __VERIFIER_nondet_int(); [L13] int y = __VERIFIER_nondet_int(); [L14] COND TRUE x > 0 && y > 0 [L15] int old_x = x; [L16] int old_y = y; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L21] EXPR old_y - 2 [L21] x = old_y - 2 VAL [old_x=2147483647, old_y=2, x=0, y=2] [L22] old_x + 1 VAL [old_x=2147483647, old_y=2, x=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 53 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 14:06:18,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94297cc8-64bf-47fc-92ee-a181406ed7cd/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)