./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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_b3_o2-1.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 a830784866b9d978d50fc7ce179ad1833e96bce936e06d428688d824a51c25e5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:13:02,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:13:02,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:13:02,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:13:02,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:13:02,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:13:02,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:13:02,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:13:02,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:13:02,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:13:02,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:13:02,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:13:02,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:13:02,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:13:02,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:13:02,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:13:02,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:13:02,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:13:02,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:13:02,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:13:02,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:13:02,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:13:02,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:13:02,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:13:02,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:13:02,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:13:02,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:13:02,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:13:02,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:13:02,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:13:02,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:13:02,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:13:02,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:13:02,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:13:02,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:13:02,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:13:02,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:13:02,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:13:02,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:13:02,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:13:02,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:13:02,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:13:02,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:13:02,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:13:02,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:13:02,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:13:02,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:13:02,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:13:02,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:13:02,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:13:02,721 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:13:02,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:13:02,722 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:13:02,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:13:02,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:13:02,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:13:02,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:13:02,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:13:02,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:13:02,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:13:02,724 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:13:02,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:13:02,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:13:02,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:13:02,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:13:02,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:13:02,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:13:02,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:13:02,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:13:02,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:13:02,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:13:02,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:13:02,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:13:02,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:13:02,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:13:02,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:13:02,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a830784866b9d978d50fc7ce179ad1833e96bce936e06d428688d824a51c25e5 [2021-12-19 15:13:02,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:13:02,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:13:02,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:13:02,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:13:02,956 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:13:02,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2021-12-19 15:13:03,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d330f724b/77f59fade69a4f59b040ce04282a9662/FLAG7ee11115b [2021-12-19 15:13:03,352 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:13:03,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2021-12-19 15:13:03,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d330f724b/77f59fade69a4f59b040ce04282a9662/FLAG7ee11115b [2021-12-19 15:13:03,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d330f724b/77f59fade69a4f59b040ce04282a9662 [2021-12-19 15:13:03,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:13:03,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:13:03,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:13:03,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:13:03,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:13:03,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e73b4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03, skipping insertion in model container [2021-12-19 15:13:03,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:13:03,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:13:03,525 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_b3_o2-1.c[514,527] [2021-12-19 15:13:03,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:13:03,542 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:13:03,558 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_b3_o2-1.c[514,527] [2021-12-19 15:13:03,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:13:03,570 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:13:03,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03 WrapperNode [2021-12-19 15:13:03,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:13:03,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:13:03,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:13:03,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:13:03,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,600 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-12-19 15:13:03,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:13:03,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:13:03,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:13:03,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:13:03,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:13:03,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:13:03,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:13:03,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:13:03,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (1/1) ... [2021-12-19 15:13:03,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:13:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:13:03,645 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) [2021-12-19 15:13:03,647 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 [2021-12-19 15:13:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:13:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:13:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:13:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:13:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-12-19 15:13:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-12-19 15:13:03,720 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:13:03,721 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:13:03,789 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:13:03,794 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:13:03,794 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-19 15:13:03,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:13:03 BoogieIcfgContainer [2021-12-19 15:13:03,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:13:03,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:13:03,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:13:03,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:13:03,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:13:03" (1/3) ... [2021-12-19 15:13:03,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510ad087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:13:03, skipping insertion in model container [2021-12-19 15:13:03,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:13:03" (2/3) ... [2021-12-19 15:13:03,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510ad087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:13:03, skipping insertion in model container [2021-12-19 15:13:03,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:13:03" (3/3) ... [2021-12-19 15:13:03,803 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o2-1.c [2021-12-19 15:13:03,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:13:03,809 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-19 15:13:03,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:13:03,853 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 [2021-12-19 15:13:03,853 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-19 15:13:03,867 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) [2021-12-19 15:13:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:13:03,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:13:03,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:13:03,872 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-19 15:13:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:13:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 890408432, now seen corresponding path program 1 times [2021-12-19 15:13:03,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:13:03,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913065621] [2021-12-19 15:13:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:13:03,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:13:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:13:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:13:04,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:13:04,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913065621] [2021-12-19 15:13:04,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913065621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:13:04,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:13:04,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:13:04,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531179380] [2021-12-19 15:13:04,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:13:04,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:13:04,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:13:04,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:13:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:13:04,113 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) [2021-12-19 15:13:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:13:04,159 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-12-19 15:13:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:13:04,162 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 [2021-12-19 15:13:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:13:04,167 INFO L225 Difference]: With dead ends: 27 [2021-12-19 15:13:04,167 INFO L226 Difference]: Without dead ends: 17 [2021-12-19 15:13:04,169 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 [2021-12-19 15:13:04,172 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 [2021-12-19 15:13:04,173 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] [2021-12-19 15:13:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-19 15:13:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-19 15:13:04,228 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) [2021-12-19 15:13:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-19 15:13:04,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-12-19 15:13:04,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:13:04,231 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-19 15:13:04,231 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) [2021-12-19 15:13:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-12-19 15:13:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-19 15:13:04,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:13:04,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:13:04,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:13:04,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-19 15:13:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:13:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1832857669, now seen corresponding path program 1 times [2021-12-19 15:13:04,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:13:04,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773491655] [2021-12-19 15:13:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:13:04,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:13:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 15:13:04,250 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 15:13:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 15:13:04,278 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 15:13:04,278 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-19 15:13:04,280 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-19 15:13:04,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-19 15:13:04,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-19 15:13:04,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-19 15:13:04,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 15:13:04,288 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-19 15:13:04,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-19 15:13:04,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 03:13:04 BoogieIcfgContainer [2021-12-19 15:13:04,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-19 15:13:04,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 15:13:04,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 15:13:04,318 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 15:13:04,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:13:03" (3/4) ... [2021-12-19 15:13:04,320 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-19 15:13:04,347 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 15:13:04,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 15:13:04,349 INFO L158 Benchmark]: Toolchain (without parser) took 974.49ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 57.1MB in the beginning and 45.0MB in the end (delta: 12.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2021-12-19 15:13:04,349 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 44.2MB in the beginning and 44.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:13:04,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.28ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 83.3MB in the end (delta: -26.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 15:13:04,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.63ms. Allocated memory is still 107.0MB. Free memory was 82.8MB in the beginning and 81.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 15:13:04,351 INFO L158 Benchmark]: Boogie Preprocessor took 19.96ms. Allocated memory is still 107.0MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:13:04,353 INFO L158 Benchmark]: RCFGBuilder took 173.90ms. Allocated memory is still 107.0MB. Free memory was 80.7MB in the beginning and 71.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 15:13:04,353 INFO L158 Benchmark]: TraceAbstraction took 518.89ms. Allocated memory is still 107.0MB. Free memory was 71.2MB in the beginning and 46.7MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-19 15:13:04,353 INFO L158 Benchmark]: Witness Printer took 30.25ms. Allocated memory is still 107.0MB. Free memory was 46.7MB in the beginning and 45.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 15:13:04,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 44.2MB in the beginning and 44.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.28ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 83.3MB in the end (delta: -26.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.63ms. Allocated memory is still 107.0MB. Free memory was 82.8MB in the beginning and 81.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.96ms. Allocated memory is still 107.0MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 173.90ms. Allocated memory is still 107.0MB. Free memory was 80.7MB in the beginning and 71.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 518.89ms. Allocated memory is still 107.0MB. Free memory was 71.2MB in the beginning and 46.7MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 30.25ms. Allocated memory is still 107.0MB. Free memory was 46.7MB in the beginning and 45.0MB 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: 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: 0.4s, 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, 0.1s 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! [2021-12-19 15:13:04,431 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)