./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3a877d22 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/termination-crafted/Nyala-2lex-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash c7af6276f284150d727ce6751d1ad224555978772fc00866b2076f280ebd27cb --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:49:34,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:49:34,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:49:34,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:49:34,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:49:34,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:49:34,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:49:34,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:49:34,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:49:34,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:49:34,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:49:34,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:49:34,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:49:34,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:49:34,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:49:34,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:49:34,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:49:34,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:49:34,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:49:34,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:49:34,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:49:34,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:49:34,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:49:34,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:49:34,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:49:34,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:49:34,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:49:34,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:49:34,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:49:34,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:49:34,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:49:34,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:49:34,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:49:34,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:49:34,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:49:34,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:49:34,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:49:34,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:49:34,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:49:34,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:49:34,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:49:34,743 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-15 16:49:34,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:49:34,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:49:34,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:49:34,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:49:34,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:49:34,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:49:34,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:49:34,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:49:34,771 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:49:34,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:49:34,772 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:49:34,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:49:34,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:49:34,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 16:49:34,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:49:34,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 16:49:34,773 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-15 16:49:34,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:49:34,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:49:34,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 16:49:34,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:49:34,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:49:34,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:49:34,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:49:34,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:49:34,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:49:34,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 16:49:34,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:49:34,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:49:34,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 16:49:34,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:49:34,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7af6276f284150d727ce6751d1ad224555978772fc00866b2076f280ebd27cb [2021-12-15 16:49:34,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:49:34,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:49:34,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:49:34,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:49:34,977 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:49:34,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2021-12-15 16:49:35,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f9e5398/dde08221582a453bab77334ad30c96ac/FLAG51845a583 [2021-12-15 16:49:35,322 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:49:35,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2021-12-15 16:49:35,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f9e5398/dde08221582a453bab77334ad30c96ac/FLAG51845a583 [2021-12-15 16:49:35,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f9e5398/dde08221582a453bab77334ad30c96ac [2021-12-15 16:49:35,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:49:35,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:49:35,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:49:35,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:49:35,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:49:35,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c763c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35, skipping insertion in model container [2021-12-15 16:49:35,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:49:35,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:49:35,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:49:35,898 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:49:35,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:49:35,920 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:49:35,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35 WrapperNode [2021-12-15 16:49:35,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:49:35,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:49:35,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:49:35,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:49:35,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,943 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-12-15 16:49:35,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:49:35,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:49:35,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:49:35,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:49:35,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:49:35,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:49:35,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:49:35,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:49:35,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (1/1) ... [2021-12-15 16:49:35,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:49:35,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:35,996 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) [2021-12-15 16:49:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:49:36,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:49:36,019 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 [2021-12-15 16:49:36,065 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:49:36,066 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:49:36,143 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:49:36,147 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:49:36,147 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 16:49:36,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:49:36 BoogieIcfgContainer [2021-12-15 16:49:36,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:49:36,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:49:36,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:49:36,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:49:36,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:49:35" (1/3) ... [2021-12-15 16:49:36,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4548ef15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:49:36, skipping insertion in model container [2021-12-15 16:49:36,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:35" (2/3) ... [2021-12-15 16:49:36,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4548ef15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:49:36, skipping insertion in model container [2021-12-15 16:49:36,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:49:36" (3/3) ... [2021-12-15 16:49:36,155 INFO L111 eAbstractionObserver]: Analyzing ICFG Nyala-2lex-2.c [2021-12-15 16:49:36,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:49:36,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-15 16:49:36,188 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:49:36,193 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 [2021-12-15 16:49:36,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-15 16:49:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 15 states have internal predecessors, (18), 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) [2021-12-15 16:49:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 16:49:36,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:36,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 16:49:36,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:49:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:36,218 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2021-12-15 16:49:36,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:36,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901819950] [2021-12-15 16:49:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:36,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:36,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901819950] [2021-12-15 16:49:36,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901819950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:36,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:36,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:36,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214273163] [2021-12-15 16:49:36,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:36,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:36,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:36,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,383 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 15 states have internal predecessors, (18), 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, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-15 16:49:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:36,420 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-12-15 16:49:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-12-15 16:49:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:36,439 INFO L225 Difference]: With dead ends: 20 [2021-12-15 16:49:36,439 INFO L226 Difference]: Without dead ends: 11 [2021-12-15 16:49:36,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,444 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:36,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-15 16:49:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-15 16:49:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-12-15 16:49:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-12-15 16:49:36,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 4 [2021-12-15 16:49:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:36,471 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-12-15 16:49:36,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-15 16:49:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-12-15 16:49:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:49:36,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:36,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:49:36,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 16:49:36,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:49:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2021-12-15 16:49:36,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:36,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792565728] [2021-12-15 16:49:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:36,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:36,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:36,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792565728] [2021-12-15 16:49:36,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792565728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:36,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:36,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:36,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774985886] [2021-12-15 16:49:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:36,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:36,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:36,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:36,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,523 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2021-12-15 16:49:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:36,553 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-12-15 16:49:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:36,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2021-12-15 16:49:36,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:36,554 INFO L225 Difference]: With dead ends: 12 [2021-12-15 16:49:36,554 INFO L226 Difference]: Without dead ends: 11 [2021-12-15 16:49:36,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,555 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:36,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-15 16:49:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-12-15 16:49:36,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2021-12-15 16:49:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-12-15 16:49:36,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2021-12-15 16:49:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:36,562 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-12-15 16:49:36,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2021-12-15 16:49:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-12-15 16:49:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 16:49:36,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:36,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:49:36,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 16:49:36,563 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:49:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1810629643, now seen corresponding path program 1 times [2021-12-15 16:49:36,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:36,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537615813] [2021-12-15 16:49:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:36,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:36,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537615813] [2021-12-15 16:49:36,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537615813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:36,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:36,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:36,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756103798] [2021-12-15 16:49:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:36,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:36,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:36,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,608 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-15 16:49:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:36,614 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-12-15 16:49:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-15 16:49:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:36,615 INFO L225 Difference]: With dead ends: 10 [2021-12-15 16:49:36,615 INFO L226 Difference]: Without dead ends: 9 [2021-12-15 16:49:36,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,620 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:36,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-15 16:49:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-15 16:49:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-12-15 16:49:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-12-15 16:49:36,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-12-15 16:49:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:36,626 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-15 16:49:36,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-15 16:49:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-12-15 16:49:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:49:36,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:36,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:49:36,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 16:49:36,629 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:49:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash 294944137, now seen corresponding path program 1 times [2021-12-15 16:49:36,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:36,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235158885] [2021-12-15 16:49:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:36,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:36,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:36,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235158885] [2021-12-15 16:49:36,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235158885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:36,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:36,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:36,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621498348] [2021-12-15 16:49:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:36,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:36,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:36,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,670 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-15 16:49:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:36,682 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-12-15 16:49:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-15 16:49:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:36,683 INFO L225 Difference]: With dead ends: 10 [2021-12-15 16:49:36,683 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 16:49:36,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:36,686 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:36,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 16:49:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 16:49:36,690 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) [2021-12-15 16:49:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 16:49:36,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-12-15 16:49:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:36,691 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 16:49:36,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-15 16:49:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 16:49:36,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 16:49:36,694 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-15 16:49:36,694 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-15 16:49:36,694 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-15 16:49:36,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-15 16:49:36,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 16:49:36,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-15 16:49:36,726 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-12-15 16:49:36,726 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-15 16:49:36,726 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-15 16:49:36,726 INFO L858 garLoopResultBuilder]: For program point L21(lines 21 24) no Hoare annotation was computed. [2021-12-15 16:49:36,727 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 19 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647)) [2021-12-15 16:49:36,727 INFO L858 garLoopResultBuilder]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2021-12-15 16:49:36,727 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-15 16:49:36,727 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-12-15 16:49:36,727 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-12-15 16:49:36,728 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-15 16:49:36,728 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-15 16:49:36,729 INFO L854 garLoopResultBuilder]: At program point L26(lines 15 27) the Hoare annotation is: (<= |ULTIMATE.start_main_~y~0#1| 2147483647) [2021-12-15 16:49:36,730 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-12-15 16:49:36,730 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-12-15 16:49:36,730 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-12-15 16:49:36,730 INFO L858 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-12-15 16:49:36,733 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-15 16:49:36,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 16:49:36,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 04:49:36 BoogieIcfgContainer [2021-12-15 16:49:36,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 16:49:36,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 16:49:36,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 16:49:36,748 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 16:49:36,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:49:36" (3/4) ... [2021-12-15 16:49:36,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 16:49:36,762 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-15 16:49:36,762 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-15 16:49:36,763 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 16:49:36,786 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 16:49:36,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 16:49:36,787 INFO L158 Benchmark]: Toolchain (without parser) took 1020.58ms. Allocated memory is still 121.6MB. Free memory was 89.6MB in the beginning and 52.0MB in the end (delta: 37.6MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2021-12-15 16:49:36,787 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory is still 34.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:49:36,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.55ms. Allocated memory is still 121.6MB. Free memory was 89.2MB in the beginning and 99.6MB in the end (delta: -10.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-12-15 16:49:36,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.61ms. Allocated memory is still 121.6MB. Free memory was 99.6MB in the beginning and 98.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:49:36,788 INFO L158 Benchmark]: Boogie Preprocessor took 15.77ms. Allocated memory is still 121.6MB. Free memory was 98.2MB in the beginning and 96.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:49:36,788 INFO L158 Benchmark]: RCFGBuilder took 187.28ms. Allocated memory is still 121.6MB. Free memory was 96.8MB in the beginning and 88.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:49:36,788 INFO L158 Benchmark]: TraceAbstraction took 597.76ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 54.8MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-12-15 16:49:36,788 INFO L158 Benchmark]: Witness Printer took 37.97ms. Allocated memory is still 121.6MB. Free memory was 54.8MB in the beginning and 52.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:49:36,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory is still 34.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.55ms. Allocated memory is still 121.6MB. Free memory was 89.2MB in the beginning and 99.6MB in the end (delta: -10.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.61ms. Allocated memory is still 121.6MB. Free memory was 99.6MB in the beginning and 98.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.77ms. Allocated memory is still 121.6MB. Free memory was 98.2MB in the beginning and 96.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 187.28ms. Allocated memory is still 121.6MB. Free memory was 96.8MB in the beginning and 88.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 597.76ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 54.8MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 37.97ms. Allocated memory is still 121.6MB. Free memory was 54.8MB in the beginning and 52.0MB in the end (delta: 2.8MB). 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 31 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: y <= 2147483647 && x <= 2147483647 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: y <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-12-15 16:49:36,824 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 Result: TRUE