./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/ldv-regression/test_overflow.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31c2f37fb9b98eb55ea768d9d2102dfc89bdbbd18c4d53edbd17f5c0e13b956a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 08:09:58,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 08:09:58,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 08:09:58,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 08:09:58,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 08:09:58,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 08:09:58,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 08:09:58,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 08:09:58,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 08:09:58,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 08:09:58,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 08:09:58,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 08:09:58,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 08:09:58,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 08:09:58,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 08:09:58,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 08:09:58,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 08:09:58,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 08:09:58,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 08:09:58,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 08:09:58,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 08:09:58,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 08:09:58,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 08:09:58,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 08:09:58,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 08:09:58,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 08:09:58,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 08:09:58,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 08:09:58,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 08:09:58,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 08:09:58,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 08:09:58,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 08:09:58,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 08:09:58,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 08:09:58,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 08:09:58,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 08:09:58,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 08:09:58,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 08:09:58,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 08:09:58,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 08:09:58,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 08:09:58,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 08:09:58,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 08:09:58,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 08:09:58,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 08:09:58,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 08:09:58,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 08:09:58,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 08:09:58,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 08:09:58,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 08:09:58,592 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 08:09:58,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 08:09:58,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 08:09:58,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 08:09:58,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 08:09:58,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 08:09:58,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 08:09:58,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 08:09:58,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 08:09:58,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 08:09:58,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 08:09:58,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 08:09:58,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 08:09:58,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 08:09:58,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 08:09:58,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 08:09:58,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 08:09:58,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 08:09:58,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 08:09:58,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 08:09:58,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 08:09:58,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 08:09:58,595 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 08:09:58,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 08:09:58,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 08:09:58,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 08:09:58,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31c2f37fb9b98eb55ea768d9d2102dfc89bdbbd18c4d53edbd17f5c0e13b956a [2021-12-17 08:09:58,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 08:09:58,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 08:09:58,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 08:09:58,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 08:09:58,832 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 08:09:58,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_overflow.i [2021-12-17 08:09:58,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286151c58/43300a892c07490a8ff8d5d17000a772/FLAGea2af6d58 [2021-12-17 08:09:59,333 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 08:09:59,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_overflow.i [2021-12-17 08:09:59,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286151c58/43300a892c07490a8ff8d5d17000a772/FLAGea2af6d58 [2021-12-17 08:09:59,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286151c58/43300a892c07490a8ff8d5d17000a772 [2021-12-17 08:09:59,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 08:09:59,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 08:09:59,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 08:09:59,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 08:09:59,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 08:09:59,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78cea8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59, skipping insertion in model container [2021-12-17 08:09:59,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 08:09:59,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 08:09:59,732 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/ldv-regression/test_overflow.i[33387,33400] [2021-12-17 08:09:59,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 08:09:59,747 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 08:09:59,778 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/ldv-regression/test_overflow.i[33387,33400] [2021-12-17 08:09:59,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 08:09:59,807 INFO L208 MainTranslator]: Completed translation [2021-12-17 08:09:59,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59 WrapperNode [2021-12-17 08:09:59,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 08:09:59,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 08:09:59,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 08:09:59,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 08:09:59,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,854 INFO L137 Inliner]: procedures = 219, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 33 [2021-12-17 08:09:59,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 08:09:59,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 08:09:59,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 08:09:59,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 08:09:59,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 08:09:59,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 08:09:59,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 08:09:59,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 08:09:59,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (1/1) ... [2021-12-17 08:09:59,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 08:09:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 08:09:59,931 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) [2021-12-17 08:09:59,940 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 [2021-12-17 08:09:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 08:09:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 08:09:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 08:09:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 08:10:00,027 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 08:10:00,044 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 08:10:00,143 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 08:10:00,147 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 08:10:00,147 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 08:10:00,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:10:00 BoogieIcfgContainer [2021-12-17 08:10:00,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 08:10:00,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 08:10:00,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 08:10:00,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 08:10:00,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 08:09:59" (1/3) ... [2021-12-17 08:10:00,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c4342f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:10:00, skipping insertion in model container [2021-12-17 08:10:00,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 08:09:59" (2/3) ... [2021-12-17 08:10:00,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c4342f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 08:10:00, skipping insertion in model container [2021-12-17 08:10:00,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:10:00" (3/3) ... [2021-12-17 08:10:00,155 INFO L111 eAbstractionObserver]: Analyzing ICFG test_overflow.i [2021-12-17 08:10:00,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 08:10:00,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 08:10:00,188 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 08:10:00,194 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=PETRI_NET, 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 [2021-12-17 08:10:00,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 08:10:00,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-12-17 08:10:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-17 08:10:00,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 08:10:00,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-17 08:10:00,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 08:10:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 08:10:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash 28692867, now seen corresponding path program 1 times [2021-12-17 08:10:00,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 08:10:00,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951754070] [2021-12-17 08:10:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 08:10:00,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 08:10:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 08:10:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 08:10:00,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 08:10:00,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951754070] [2021-12-17 08:10:00,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951754070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 08:10:00,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 08:10:00,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 08:10:00,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635759424] [2021-12-17 08:10:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 08:10:00,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 08:10:00,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 08:10:00,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 08:10:00,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 08:10:00,441 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-12-17 08:10:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 08:10:00,473 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-12-17 08:10:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 08:10:00,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-12-17 08:10:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 08:10:00,479 INFO L225 Difference]: With dead ends: 15 [2021-12-17 08:10:00,479 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 08:10:00,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 08:10:00,483 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 08:10:00,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 08:10:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 08:10:00,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 08:10:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-17 08:10:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 08:10:00,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-12-17 08:10:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 08:10:00,499 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 08:10:00,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-12-17 08:10:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 08:10:00,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 08:10:00,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 08:10:00,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 08:10:00,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 08:10:00,524 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 08:10:00,525 INFO L854 garLoopResultBuilder]: At program point L768(lines 764 769) the Hoare annotation is: (= ~globalSize~0 4) [2021-12-17 08:10:00,525 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 08:10:00,525 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 08:10:00,525 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 08:10:00,525 INFO L854 garLoopResultBuilder]: At program point L762(lines 756 763) the Hoare annotation is: (= ~globalSize~0 4) [2021-12-17 08:10:00,526 INFO L858 garLoopResultBuilder]: For program point L760(line 760) no Hoare annotation was computed. [2021-12-17 08:10:00,526 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 752) no Hoare annotation was computed. [2021-12-17 08:10:00,526 INFO L858 garLoopResultBuilder]: For program point L760-2(line 760) no Hoare annotation was computed. [2021-12-17 08:10:00,526 INFO L858 garLoopResultBuilder]: For program point L752(line 752) no Hoare annotation was computed. [2021-12-17 08:10:00,526 INFO L858 garLoopResultBuilder]: For program point L750(lines 750 753) no Hoare annotation was computed. [2021-12-17 08:10:00,528 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-17 08:10:00,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 08:10:00,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 08:10:00 BoogieIcfgContainer [2021-12-17 08:10:00,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 08:10:00,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 08:10:00,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 08:10:00,548 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 08:10:00,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 08:10:00" (3/4) ... [2021-12-17 08:10:00,553 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 08:10:00,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 08:10:00,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-17 08:10:00,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-17 08:10:00,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 08:10:00,593 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 08:10:00,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 08:10:00,594 INFO L158 Benchmark]: Toolchain (without parser) took 1228.41ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 55.9MB in the beginning and 84.9MB in the end (delta: -29.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 08:10:00,594 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 08:10:00,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.13ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 55.7MB in the beginning and 80.6MB in the end (delta: -24.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 08:10:00,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.09ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 08:10:00,595 INFO L158 Benchmark]: Boogie Preprocessor took 31.54ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 77.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 08:10:00,595 INFO L158 Benchmark]: RCFGBuilder took 261.65ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 68.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 08:10:00,596 INFO L158 Benchmark]: TraceAbstraction took 396.55ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 87.8MB in the end (delta: -19.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 08:10:00,596 INFO L158 Benchmark]: Witness Printer took 45.95ms. Allocated memory is still 117.4MB. Free memory was 87.0MB in the beginning and 84.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 08:10:00,599 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 88.1MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.13ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 55.7MB in the beginning and 80.6MB in the end (delta: -24.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.09ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.54ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 77.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.65ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 68.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 396.55ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 87.8MB in the end (delta: -19.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 45.95ms. Allocated memory is still 117.4MB. Free memory was 87.0MB in the beginning and 84.9MB in the end (delta: 2.1MB). 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 - PositiveResult [Line: 752]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, 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, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 756]: Loop Invariant Derived loop invariant: globalSize == 4 - InvariantResult [Line: 764]: Loop Invariant Derived loop invariant: globalSize == 4 RESULT: Ultimate proved your program to be correct! [2021-12-17 08:10:00,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE