./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ffe9d53e7df9ed7c01a08260077d50503ae990d73f9d5314e3d980848a06263 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:49:16,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:49:16,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:49:16,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:49:16,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:49:16,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:49:16,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:49:16,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:49:16,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:49:16,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:49:16,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:49:16,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:49:16,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:49:16,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:49:16,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:49:16,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:49:16,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:49:16,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:49:16,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:49:16,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:49:16,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:49:16,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:49:16,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:49:16,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:49:16,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:49:16,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:49:16,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:49:16,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:49:16,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:49:16,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:49:16,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:49:16,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:49:16,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:49:16,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:49:16,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:49:16,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:49:16,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:49:16,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:49:16,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:49:16,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:49:16,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:49:16,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:49:16,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:49:16,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:49:16,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:49:16,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:49:16,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:49:16,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:49:16,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:49:16,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:49:16,480 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:49:16,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:49:16,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:49:16,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:49:16,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:49:16,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:49:16,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:49:16,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:49:16,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:49:16,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:49:16,482 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:49:16,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:49:16,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:49:16,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:49:16,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:49:16,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:49:16,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:49:16,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:49:16,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:49:16,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:49:16,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:49:16,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:49:16,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:49:16,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:49:16,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:49:16,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:49:16,485 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ffe9d53e7df9ed7c01a08260077d50503ae990d73f9d5314e3d980848a06263 [2021-12-21 20:49:16,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:49:16,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:49:16,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:49:16,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:49:16,721 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:49:16,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c [2021-12-21 20:49:16,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa39131f1/43efb9273031469fad7da322205d39b9/FLAG90974054e [2021-12-21 20:49:17,156 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:49:17,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b5_o10-1.c [2021-12-21 20:49:17,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa39131f1/43efb9273031469fad7da322205d39b9/FLAG90974054e [2021-12-21 20:49:17,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa39131f1/43efb9273031469fad7da322205d39b9 [2021-12-21 20:49:17,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:49:17,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:49:17,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:49:17,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:49:17,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:49:17,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516c3fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17, skipping insertion in model container [2021-12-21 20:49:17,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:49:17,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:49:17,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b5_o10-1.c[516,529] [2021-12-21 20:49:17,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:49:17,373 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:49:17,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b5_o10-1.c[516,529] [2021-12-21 20:49:17,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:49:17,421 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:49:17,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17 WrapperNode [2021-12-21 20:49:17,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:49:17,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:49:17,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:49:17,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:49:17,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,469 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-12-21 20:49:17,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:49:17,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:49:17,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:49:17,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:49:17,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:49:17,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:49:17,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:49:17,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:49:17,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (1/1) ... [2021-12-21 20:49:17,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:49:17,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:49:17,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 20:49:17,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 20:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:49:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:49:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-12-21 20:49:17,570 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-12-21 20:49:17,605 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:49:17,607 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:49:17,683 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:49:17,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:49:17,688 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 20:49:17,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:49:17 BoogieIcfgContainer [2021-12-21 20:49:17,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:49:17,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:49:17,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:49:17,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:49:17,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:49:17" (1/3) ... [2021-12-21 20:49:17,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77aa0349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:49:17, skipping insertion in model container [2021-12-21 20:49:17,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:49:17" (2/3) ... [2021-12-21 20:49:17,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77aa0349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:49:17, skipping insertion in model container [2021-12-21 20:49:17,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:49:17" (3/3) ... [2021-12-21 20:49:17,695 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b5_o10-1.c [2021-12-21 20:49:17,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:49:17,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-21 20:49:17,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:49:17,733 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 [2021-12-21 20:49:17,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-21 20:49:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 20:49:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-21 20:49:17,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:17,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-21 20:49:17,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-21 20:49:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 890408432, now seen corresponding path program 1 times [2021-12-21 20:49:17,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:17,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065054280] [2021-12-21 20:49:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:17,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:49:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:49:17,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:49:17,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065054280] [2021-12-21 20:49:17,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065054280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:49:17,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:49:17,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:49:17,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035062780] [2021-12-21 20:49:17,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:49:17,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 20:49:17,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:49:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 20:49:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:49:17,882 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:49:17,956 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-12-21 20:49:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:49:17,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-21 20:49:17,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:49:17,964 INFO L225 Difference]: With dead ends: 27 [2021-12-21 20:49:17,964 INFO L226 Difference]: Without dead ends: 17 [2021-12-21 20:49:17,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:49:17,968 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:49:17,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:49:17,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-21 20:49:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-21 20:49:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:49:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-21 20:49:18,005 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-12-21 20:49:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:49:18,006 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-21 20:49:18,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:49:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-12-21 20:49:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 20:49:18,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:49:18,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:49:18,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:49:18,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-21 20:49:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:49:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1832857669, now seen corresponding path program 1 times [2021-12-21 20:49:18,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:49:18,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682890781] [2021-12-21 20:49:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:49:18,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:49:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:49:18,040 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 20:49:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:49:18,056 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 20:49:18,058 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 20:49:18,059 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-21 20:49:18,061 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-21 20:49:18,061 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-21 20:49:18,062 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-21 20:49:18,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 20:49:18,066 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 20:49:18,069 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 20:49:18,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:49:18 BoogieIcfgContainer [2021-12-21 20:49:18,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 20:49:18,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 20:49:18,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 20:49:18,094 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 20:49:18,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:49:17" (3/4) ... [2021-12-21 20:49:18,097 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 20:49:18,118 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 20:49:18,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 20:49:18,119 INFO L158 Benchmark]: Toolchain (without parser) took 930.34ms. Allocated memory is still 115.3MB. Free memory was 75.8MB in the beginning and 52.3MB in the end (delta: 23.5MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2021-12-21 20:49:18,119 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 92.3MB in the beginning and 92.2MB in the end (delta: 68.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:49:18,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.80ms. Allocated memory is still 115.3MB. Free memory was 75.6MB in the beginning and 90.7MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 20:49:18,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.17ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:49:18,121 INFO L158 Benchmark]: Boogie Preprocessor took 26.09ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 88.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:49:18,121 INFO L158 Benchmark]: RCFGBuilder took 193.11ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 79.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 20:49:18,123 INFO L158 Benchmark]: TraceAbstraction took 401.68ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 53.7MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-21 20:49:18,123 INFO L158 Benchmark]: Witness Printer took 24.84ms. Allocated memory is still 115.3MB. Free memory was 53.7MB in the beginning and 52.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:49:18,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 92.3MB in the beginning and 92.2MB in the end (delta: 68.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.80ms. Allocated memory is still 115.3MB. Free memory was 75.6MB in the beginning and 90.7MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.17ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.09ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 88.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 193.11ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 79.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 401.68ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 53.7MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 24.84ms. Allocated memory is still 115.3MB. Free memory was 53.7MB in the beginning and 52.3MB in the end (delta: 1.4MB). There was no memory consumed. 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: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL id(input) VAL [\old(x)=-2147483648] [L7] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L8] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: 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 2 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 17 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2021-12-21 20:49:18,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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)